模块 Test::Unit::Assertions

Test::Unit::Assertions 包含标准的 Test::Unit 断言。Assertions 包含在 Test::Unit::TestCase 中。

若要将其包含在您的代码中并使用其功能，您只需救援 Test::Unit::AssertionFailedError。此外，您可以重写 add_assertion，以便在每次进行断言时收到通知。

备注

如果给定，则每个断言的消息都将随失败一起传播。
基于 assert_block() 添加您自己的断言很容易。

@example 示例自定义断言

def deny(boolean, message=nil)
  message = build_message(message, '<?> is not false or nil.', boolean)
  assert_block(message) do
    not boolean
  end
end

常量

NOT_SPECIFIED: @private

公共类方法

use_pp=(value) 点击以切换源

选择是否使用漂亮的打印机。如果在进行任何断言之前将此选项设置为 false，则不需要 pp.rb。

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1939
def self.use_pp=(value)
  AssertionMessage.use_pp = value
end

公共实例方法

add_assertion() 点击以切换源

每当进行断言时调用。在包含 Test::Unit::Assertions 的类中定义此项以记录断言计数。

这是为扩展 test-unit 的开发人员提供的公共 API。

@return [void]

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1933
def add_assertion
end

assert(object=NOT_SPECIFIED, message=nil) { || ... } 点击以切换源

@overload assert(object, message=nil)

Asserts that `object` is not false nor nil.

Normally, you don't need to use this assertion. Use more
specific assertions such as #assert_equal and
#assert_include.

@example Pass patterns
  assert(true)               # => pass
  assert([1, 2].include?(1)) # => pass

@example Failure patterns
  assert(nil)                # => failure
  assert(false)              # => failure
  assert([1, 2].include?(5)) # => failure

@param [Object] object The check target.
@param [String] message The additional user message. It is
  showed when the assertion is failed.
@return [void]

@overload assert(message=nil) {}

Asserts that the givens block returns not false nor nil.

This style uses Power Assert. It means that you can see each
object values in method chains on failure. See the following
example about Power Assert.

@example Power Assert
  coins = [1, 5, 50]
  target_coin = 10
  assert do
    coins.include?(target_coin)
  end
  # =>
  #  coins.include?(target_coin)
  #  |     |        |
  #  |     |        10
  #  |     false
  #  [1, 5, 50]

We recommend you to use Power Assert for predicate method
checks rather than existing assertions such as
#assert_include and #assert_predicate. Power Assert shows
useful message for debugging.

We don't recommend you use Power Assert for equality
check. You should use #assert_equal for the case. Because
#assert_equal shows more useful message for debugging.

@example Pass patterns
  assert {true}               # => pass
  assert {[1, 2].include?(1)} # => pass

@example Failure patterns
  assert {nil}                # => failure
  assert {false}              # => failure
  assert {[1, 2].include?(5)} # => failure

@param [String] message The additional user message. It is
  showed when the assertion is failed.
@yield [] Given no parameters to the block.
@yieldreturn [Object] The checked object.
@return [void]

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 134
def assert(object=NOT_SPECIFIED, message=nil, &block)
  _wrap_assertion do
    have_object = !NOT_SPECIFIED.equal?(object)
    if block
      message = object if have_object
      if defined?(PowerAssert)
        PowerAssert.start(block, :assertion_method => __callee__) do |pa|
          pa_message = AssertionMessage.delayed_literal(&pa.message_proc)
          assertion_message = build_message(message, "?", pa_message)
          assert_block(assertion_message) do
            pa.yield
          end
        end
      else
        assert(yield, message)
      end
    else
      unless have_object
        raise ArgumentError, "wrong number of arguments (0 for 1..2)"
      end
      assertion_message = nil
      case message
      when nil, String, Proc
      when AssertionMessage
        assertion_message = message
      else
        error_message = "assertion message must be String, Proc or "
        error_message += "#{AssertionMessage}: "
        error_message += "<#{message.inspect}>(<#{message.class}>)"
        raise ArgumentError, error_message, filter_backtrace(caller)
      end
      assertion_message ||= build_message(message,
                                          "<?> is not true.",
                                          object)
      assert_block(assertion_message) do
        object
      end
    end
  end
end

assert_alias_method(object, alias_name, original_name, message=nil) 点击以切换源

如果 `object`#`alias_name` 是 `object`#`original_name` 的别名方法，则通过。

@example

assert_alias_method([], :length, :size)  # -> pass
assert_alias_method([], :size, :length)  # -> pass
assert_alias_method([], :each, :size)    # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1587
def assert_alias_method(object, alias_name, original_name, message=nil)
  _wrap_assertion do
    find_method_failure_message = Proc.new do |method_name|
      build_message(message,
                    "<?>.? doesn't exist\n" +
                    "(Class: <?>)",
                    object,
                    AssertionMessage.literal(method_name),
                    object.class)
    end

    alias_method = original_method = nil
    assert_block(find_method_failure_message.call(alias_name)) do
      begin
        alias_method = object.method(alias_name)
        true
      rescue NameError
        false
      end
    end
    assert_block(find_method_failure_message.call(original_name)) do
      begin
        original_method = object.method(original_name)
        true
      rescue NameError
        false
      end
    end

    full_message = build_message(message,
                                 "<?> is alias of\n" +
                                 "<?> expected",
                                 alias_method,
                                 original_method)
    assert_block(full_message) do
      alias_method == original_method
    end
  end
end

assert_all(collection, message=nil) { |item| ... } 点击以切换源

@overload assert_all(collection, message=nil, &block)

Asserts that all `block.call(item)` where `item` is each
item in `collection` are not false nor nil.

If `collection` is empty, this assertion is always passed
with any `block`.

@example Pass patterns
  assert_all([1, 2, 3]) {|item| item > 0} # => pass
  assert_all([1, 2, 3], &:positive?)      # => pass
  assert_all([]) {|item| false}           # => pass

@example Failure pattern
  assert_all([0, 1, 2], &:zero?) # => failure

@param [#each] collection The check target.
@param [String] message The additional user message. It is
  showed when the assertion is failed.
@yield [Object] Give each item in `collection` to the block.
@yieldreturn [Object] The checked object.
@return [void]

@since 3.4.4

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1797
      def assert_all(collection, message=nil)
        _wrap_assertion do
          failed = false
          result = {}
          collection.each do |item|
            element_result = yield(item)
            failed = true unless element_result
            result[item] = element_result
          end
          format = <<-FORMAT
<?> was expected to be all true values with the given block but was
<?>
          FORMAT
          full_message = build_message(message,
                                       format,
                                       collection,
                                       result)
          assert_block(full_message) do
            not failed
          end
        end
      end

也称为别名：assert_all?

assert_all?(collection, message=nil)

仅用于 Ruby 的 tool/lib/test/unit 兼容性。

@since 3.4.3

别名：assert_all

assert_block(message="assert_block failed.") { || ... } 点击以切换源

所有其他断言都基于此断言。如果该块产生的既不是 false 也不是 nil，则通过。

@example

assert_block "Couldn't do the thing" do
  do_the_thing
end

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 53
def assert_block(message="assert_block failed.")
  _wrap_assertion do
    if (! yield)
      options = {}
      if message.respond_to?(:user_message)
        options[:user_message] = message.user_message
      end
      raise AssertionFailedError.new(message.to_s, options)
    end
  end
end

assert_boolean(actual, message=nil) 点击以切换源

如果 `actual` 是一个布尔值，则通过。

@example

assert_boolean(true) # -> pass
assert_boolean(nil)  # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1358
def assert_boolean(actual, message=nil)
  _wrap_assertion do
    assert_block(build_message(message,
                               "<true> or <false> expected but was\n<?>",
                               actual)) do
      true == actual || false == actual
    end
  end
end

assert_compare(expected, operator, actual, message=nil) 点击以切换源

如果表达式 “‘expected` `operator` `actual`” 既不是 false 也不是 nil，则通过。

@example

assert_compare(1, "<", 10)  # -> pass
assert_compare(1, ">=", 10) # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1407
      def assert_compare(expected, operator, actual, message=nil)
        _wrap_assertion do
          assert_send([["<", "<=", ">", ">="], :include?, operator.to_s])
          case operator.to_s
          when "<"
            operator_description = "less than"
          when "<="
            operator_description = "less than or equal to"
          when ">"
            operator_description = "greater than"
          when ">="
            operator_description = "greater than or equal to"
          end
          template = <<-EOT
<?> #{operator} <?> should be true
<?> was expected to be #{operator_description}
<?>.
EOT
          full_message = build_message(message, template,
                                       expected, actual,
                                       expected, actual)
          assert_block(full_message) do
            expected.__send__(operator, actual)
          end
        end
      end

assert_const_defined(object, constant_name, message=nil) 点击以切换源

如果 `object`.const_defined?(`constant_name`)，则通过

@example

assert_const_defined(Test, :Unit)          # -> pass
assert_const_defined(Object, :Nonexistent) # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1502
def assert_const_defined(object, constant_name, message=nil)
  _wrap_assertion do
    full_message = build_message(message,
                                 "<?>.const_defined\\?(<?>) expected.",
                                 object, constant_name)
    assert_block(full_message) do
      object.const_defined?(constant_name)
    end
  end
end

assert_empty(object, message=nil) 点击以切换源

如果 `object` 为空，则通过。

@example

assert_empty("")                       # -> pass
assert_empty([])                       # -> pass
assert_empty({})                       # -> pass
assert_empty(" ")                      # -> fail
assert_empty([nil])                    # -> fail
assert_empty({1 => 2})                 # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1732
def assert_empty(object, message=nil)
  _wrap_assertion do
    assert_respond_to(object, :empty?,
                      "The object must respond to :empty?.")
    full_message = build_message(message,
                                 "<?> was expected to be empty.",
                                 object)
    assert_block(full_message) do
      object.empty?
    end
  end
end

assert_equal(expected, actual, message=nil) 点击以切换源

如果 `expected` == `actual`，则通过。

请注意，参数的顺序很重要，因为当此参数失败时会生成一个有用的错误消息，告诉您 expected 和 actual 的值。

@example

assert_equal 'MY STRING', 'my string'.upcase

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 225
      def assert_equal(expected, actual, message=nil)
        diff = AssertionMessage.delayed_diff(expected, actual)
        if expected.respond_to?(:encoding) and
            actual.respond_to?(:encoding) and
            expected.encoding != actual.encoding
          format = <<EOT
<?>(?) expected but was
<?>(?).?
EOT
          full_message = build_message(message, format,
                                       expected, expected.encoding.name,
                                       actual, actual.encoding.name,
                                       diff)
        else
          full_message = build_message(message, <<EOT, expected, actual, diff)
<?> expected but was
<?>.?
EOT
        end
        begin
          assert_block(full_message) { expected == actual }
        rescue AssertionFailedError => failure
          _set_failed_information(failure, expected, actual)
          raise failure # For JRuby. :<
        end
      end

assert_fail_assertion(message=nil) { || ... } 点击以切换源

如果断言在块中失败，则通过。

@example

assert_fail_assertion {assert_equal("A", "B")}  # -> pass
assert_fail_assertion {assert_equal("A", "A")}  # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1440
def assert_fail_assertion(message=nil)
  _wrap_assertion do
    full_message = build_message(message,
                                 "Failed assertion was expected.")
    assert_block(full_message) do
      begin
        yield
        false
      rescue AssertionFailedError
        true
      end
    end
  end
end

assert_false(actual, message=nil) 点击以切换源

如果 `actual` 为 false，则通过。

@example

assert_false(false)  # -> pass
assert_false(nil)    # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1390
def assert_false(actual, message=nil)
  _wrap_assertion do
    assert_block(build_message(message,
                               "<false> expected but was\n<?>",
                               actual)) do
      false == actual
    end
  end
end

assert_in_delta(expected_float, actual_float, delta=0.001, message="") 点击以切换源

如果 `expected_float` 和 `actual_float` 在 `delta` 容差范围内相等，则通过。

@example

assert_in_delta 0.05, (50000.0 / 10**6), 0.00001

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 927
def assert_in_delta(expected_float, actual_float, delta=0.001, message="")
  _wrap_assertion do
    begin
      pass = delta >= (expected_float - actual_float).abs
      assert_operator(delta, :>=, 0.0, "The delta should not be negative")
      full_message = _assert_in_delta_message(expected_float,
                                              expected_float,
                                              actual_float,
                                              actual_float,
                                              delta,
                                              delta,
                                              message)
    rescue Test::Unit::AssertionFailedError
      # for the above assert_operator
      raise
    rescue
      _assert_in_delta_validate_arguments(expected_float,
                                          actual_float,
                                          delta)
      normalized_expected = expected_float.to_f
      normalized_actual = actual_float.to_f
      normalized_delta = delta.to_f
      pass = (normalized_expected - normalized_actual).abs <= normalized_delta
      full_message = _assert_in_delta_message(expected_float,
                                              normalized_expected,
                                              actual_float,
                                              normalized_actual,
                                              delta,
                                              normalized_delta,
                                              message)
    end
    assert_block(full_message) do
      pass
    end
  end
end

assert_in_epsilon(expected_float, actual_float, epsilon=0.001, message="") 点击以切换源

如果 `expected_float` 和 `actual_float` 在 `expected_float` 的 `epsilon` 相对误差范围内相等，则通过。

@example

assert_in_epsilon(10000.0, 9900.0, 0.1) # -> pass
assert_in_epsilon(10000.0, 9899.0, 0.1) # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1089
def assert_in_epsilon(expected_float, actual_float, epsilon=0.001,
                      message="")
  _wrap_assertion do
    begin
      zero_p = expected_float.zero? rescue expected_float == 0
      if zero_p
        delta = epsilon ** 2
      else
        delta = expected_float * epsilon
      end
      delta = delta.abs
      pass = (expected_float - actual_float).abs <= delta
      assert_operator(epsilon, :>=, 0.0, "The epsilon should not be negative")
      full_message = _assert_in_epsilon_message(expected_float,
                                                expected_float,
                                                actual_float,
                                                actual_float,
                                                epsilon,
                                                epsilon,
                                                delta,
                                                message)
    rescue Test::Unit::AssertionFailedError
      # for the above assert_operator
      raise
    rescue
      _assert_in_epsilon_validate_arguments(expected_float,
                                            actual_float,
                                            epsilon)
      normalized_expected = expected_float.to_f
      normalized_actual = actual_float.to_f
      normalized_epsilon = epsilon.to_f
      if normalized_expected.zero?
        delta = normalized_epsilon ** 2
      else
        delta = normalized_expected * normalized_epsilon
      end
      delta = delta.abs
      full_message = _assert_in_epsilon_message(expected_float,
                                                normalized_expected,
                                                actual_float,
                                                normalized_actual,
                                                epsilon,
                                                normalized_epsilon,
                                                delta,
                                                message)
      pass = (normalized_expected - normalized_actual).abs <= delta
    end
    assert_block(full_message) do
      pass
    end
  end
end

assert_include(collection, object, message=nil) 点击以切换源

如果 `collection` 包含 `object`，则通过。

@example

assert_include([1, 10], 1)            # -> pass
assert_include(1..10, 5)              # -> pass
assert_include([1, 10], 5)            # -> fail
assert_include(1..10, 20)             # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1671
def assert_include(collection, object, message=nil)
  _wrap_assertion do
    assert_respond_to(collection, :include?,
                      "The collection must respond to :include?.")
    full_message = build_message(message,
                                 "<?> was expected to include\n<?>.",
                                 collection,
                                 object)
    assert_block(full_message) do
      collection.include?(object)
    end
  end
end

也称为别名：assert_includes

assert_includes(collection, object, message=nil)

仅用于 minitest 兼容性。 :<

@since 2.5.3

别名：assert_include

assert_instance_of(klass, object, message=nil) 点击以切换源

如果 `object`.instance_of?(`klass`)，则通过。当 `klass` 是类数组时，如果任何类满足 +object.instance_of?(class)，则通过。

@example

assert_instance_of(String, 'foo')            # -> pass
assert_instance_of([Fixnum, NilClass], 100)  # -> pass
assert_instance_of([Numeric, NilClass], 100) # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 391
      def assert_instance_of(klass, object, message=nil)
        _wrap_assertion do
          if klass.is_a?(Array)
            klasses = klass
          else
            klasses = [klass]
          end
          assert_block("The first parameter to assert_instance_of should be " +
                       "a Class or an Array of Class.") do
            klasses.all? {|k| k.is_a?(Class)}
          end
          klass_message = AssertionMessage.maybe_container(klass) do |value|
            "<#{value}>"
          end
          full_message = build_message(message, <<EOT, object, klass_message, object.class)
<?> was expected to be instance_of\\?
? but was
<?>.
EOT
          assert_block(full_message) do
            klasses.any? {|k| object.instance_of?(k)}
          end
        end
      end

assert_kind_of(klass, object, message=nil) 点击以切换源

如果 `object`.kind_of?(`klass`)，则通过。当 `klass` 是类或模块的数组时，如果任何类或模块满足 +object.kind_of?(class_or_module)，则通过。

@example

assert_kind_of(Object, 'foo')                # -> pass
assert_kind_of([Fixnum, NilClass], 100)      # -> pass
assert_kind_of([Fixnum, NilClass], "string") # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 478
def assert_kind_of(klass, object, message=nil)
  _wrap_assertion do
    if klass.is_a?(Array)
      klasses = klass
    else
      klasses = [klass]
    end
    assert_block("The first parameter to assert_kind_of should be " +
                 "a kind_of Module or an Array of a kind_of Module.") do
      klasses.all? {|k| k.kind_of?(Module)}
    end
    klass_message = AssertionMessage.maybe_container(klass) do |value|
      "<#{value}>"
    end
    full_message = build_message(message,
                                 "<?> was expected to be kind_of\\?\n" +
                                 "? but was\n" +
                                 "<?>.",
                                 object,
                                 klass_message,
                                 object.class)
    assert_block(full_message) do
      klasses.any? {|k| object.kind_of?(k)}
    end
  end
end

assert_match(pattern, string, message=nil) 点击以切换源

如果 `pattern` =~ `string`，则通过。

@example

assert_match(/\d+/, 'five, 6, seven')

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 601
def assert_match(pattern, string, message=nil)
  _wrap_assertion do
    pattern = Regexp.new(Regexp.escape(pattern)) if pattern.is_a?(String)
    full_message = build_message(message,
                                 "<?> was expected to be =~\n<?>.",
                                 pattern, string)
    assert_block(full_message) { pattern =~ string }
  end
end

assert_nil(object, message=nil) 点击以切换源

如果 `object`.nil?，则通过。

@example

assert_nil [1, 2].uniq!

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 462
      def assert_nil(object, message=nil)
        full_message = build_message(message, <<EOT, object)
<?> was expected to be nil.
EOT
        assert_block(full_message) { object.nil? }
      end

assert_no_match(regexp, string, message="") 点击以切换源

@deprecated 请改用 {#assert_not_match}。

如果 `regexp` !~ `string`，则通过

@example

assert_no_match(/two/, 'one 2 three')   # -> pass
assert_no_match(/three/, 'one 2 three') # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 798
def assert_no_match(regexp, string, message="")
  _wrap_assertion do
    assert_instance_of(Regexp, regexp,
                       "The first argument to assert_no_match " +
                       "should be a Regexp.")
    assert_not_match(regexp, string, message)
  end
end

assert_not_const_defined(object, constant_name, message=nil) 点击以切换源

如果 !`object`.const_defined?(`constant_name`)，则通过

@example

assert_not_const_defined(Object, :Nonexistent) # -> pass
assert_not_const_defined(Test, :Unit)          # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1519
def assert_not_const_defined(object, constant_name, message=nil)
  _wrap_assertion do
    full_message = build_message(message,
                                 "!<?>.const_defined\\?(<?>) expected.",
                                 object, constant_name)
    assert_block(full_message) do
      !object.const_defined?(constant_name)
    end
  end
end

assert_not_empty(object, message=nil) 点击以切换源

如果 `object` 不为空，则通过。

@example

assert_not_empty(" ")                      # -> pass
assert_not_empty([nil])                    # -> pass
assert_not_empty({1 => 2})                 # -> pass
assert_not_empty("")                       # -> fail
assert_not_empty([])                       # -> fail
assert_not_empty({})                       # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1755
def assert_not_empty(object, message=nil)
  _wrap_assertion do
    assert_respond_to(object, :empty?,
                      "The object must respond to :empty?.")
    full_message = build_message(message,
                                 "<?> was expected to not be empty.",
                                 object)
    assert_block(full_message) do
      not object.empty?
    end
  end
end

也称为别名：refute_empty

assert_not_equal(expected, actual, message=nil) 点击以切换源

如果 `expected` != `actual`，则通过

@example

assert_not_equal 'some string', 5

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 740
def assert_not_equal(expected, actual, message=nil)
  full_message = build_message(message,
                               "<?> was expected to be != to\n<?>.",
                               expected, actual)
  assert_block(full_message) { expected != actual }
end

也称为别名：refute_equal

assert_not_in_delta(expected_float, actual_float, delta=0.001, message="") 点击以切换源

如果 `expected_float` 和 `actual_float` 在 `delta` 容差范围内不相等，则通过。

@example

assert_not_in_delta(0.05, (50000.0 / 10**6), 0.00002) # -> pass
assert_not_in_delta(0.05, (50000.0 / 10**6), 0.00001) # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 971
def assert_not_in_delta(expected_float, actual_float, delta=0.001, message="")
  _wrap_assertion do
    _assert_in_delta_validate_arguments(expected_float,
                                        actual_float,
                                        delta)
    begin
      pass = (expected_float - actual_float).abs > delta
      full_message = _assert_in_delta_message(expected_float,
                                              expected_float,
                                              actual_float,
                                              actual_float,
                                              delta,
                                              delta,
                                              message,
                                              :negative_assertion => true)
    rescue
      normalized_expected = expected_float.to_f
      normalized_actual = actual_float.to_f
      normalized_delta = delta.to_f
      pass = (normalized_expected - normalized_actual).abs > normalized_delta
      full_message = _assert_in_delta_message(expected_float,
                                              normalized_expected,
                                              actual_float,
                                              normalized_actual,
                                              delta,
                                              normalized_delta,
                                              message,
                                              :negative_assertion => true)
    end
    assert_block(full_message) do
      pass
    end
  end
end

也称为别名：refute_in_delta

assert_not_in_epsilon(expected_float, actual_float, epsilon=0.001, message="") 点击以切换源

如果 `expected_float` 和 `actual_float` 在 `expected_float` 的 `epsilon` 相对误差范围内不相等，则通过。

@example

assert_not_in_epsilon(10000.0, 9900.0, 0.1) # -> fail
assert_not_in_epsilon(10000.0, 9899.0, 0.1) # -> pass

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1150
def assert_not_in_epsilon(expected_float, actual_float, epsilon=0.001,
                          message="")
  _wrap_assertion do
    begin
      delta = expected_float * epsilon
      pass = (expected_float - actual_float).abs > delta
      assert_operator(epsilon, :>=, 0.0, "The epsilon should not be negative")
      full_message = _assert_in_epsilon_message(expected_float,
                                                expected_float,
                                                actual_float,
                                                actual_float,
                                                epsilon,
                                                epsilon,
                                                delta,
                                                message,
                                                :negative_assertion => true)
    rescue Test::Unit::AssertionFailedError
      # for the above assert_operator
      raise
    rescue
      _assert_in_epsilon_validate_arguments(expected_float,
                                            actual_float,
                                            epsilon)
      normalized_expected = expected_float.to_f
      normalized_actual = actual_float.to_f
      normalized_epsilon = epsilon.to_f
      delta = normalized_expected * normalized_epsilon
      pass = (normalized_expected - normalized_actual).abs > delta
      full_message = _assert_in_epsilon_message(expected_float,
                                                normalized_expected,
                                                actual_float,
                                                normalized_actual,
                                                epsilon,
                                                normalized_epsilon,
                                                delta,
                                                message,
                                                :negative_assertion => true)
    end
    assert_block(full_message) do
      pass
    end
  end
end

也称为别名：refute_in_epsilon

assert_not_include(collection, object, message=nil) 点击以切换源

如果 `collection` 不包含 `object`，则通过。

@example

assert_not_include([1, 10], 5)            # -> pass
assert_not_include(1..10, 20)             # -> pass
assert_not_include([1, 10], 1)            # -> fail
assert_not_include(1..10, 5)              # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1698
def assert_not_include(collection, object, message=nil)
  _wrap_assertion do
    assert_respond_to(collection, :include?,
                      "The collection must respond to :include?.")
    full_message = build_message(message,
                                 "<?> was expected to not include\n<?>.",
                                 collection,
                                 object)
    assert_block(full_message) do
      not collection.include?(object)
    end
  end
end

也称为别名：assert_not_includes、refute_includes

assert_not_includes(collection, object, message=nil)

仅用于 minitest 兼容性。 :<

@since 3.0.0

别名：assert_not_include

assert_not_instance_of(klass, object, message=nil) 点击以切换源

如果 `object`.instance_of?(`klass`) 不成立，则通过。当 `klass` 是类数组时，如果没有类满足 +object.instance_of?(class)，则通过。

@example

assert_not_instance_of(String, 100)                # -> pass
assert_not_instance_of([Fixnum, NilClass], '100')  # -> pass
assert_not_instance_of([Numeric, NilClass], 100)   # -> fail

@since 3.0.0

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 427
def assert_not_instance_of(klass, object, message=nil)
  _wrap_assertion do
    if klass.is_a?(Array)
      klasses = klass
    else
      klasses = [klass]
    end
    assert_block("The first parameter to assert_not_instance_of should be " +
                 "a Class or an Array of Class.") do
      klasses.all? {|k| k.is_a?(Class)}
    end
    klass_message = AssertionMessage.maybe_container(klass) do |value|
      "<#{value}>"
    end
    full_message = build_message(message,
                                 "<?> was expected to not be instance_of\\?\n" +
                                 "? but was.",
                                 object,
                                 klass_message)
    assert_block(full_message) do
      klasses.none? {|k| object.instance_of?(k)}
    end
  end
end

也称为别名：refute_instance_of

assert_not_kind_of(klass, object, message=nil) 点击以切换源

如果 `object`.kind_of?(`klass`) 不成立，则通过。当 `klass` 是类或模块的数组时，只有当所有类（和模块）都不满足 +object.kind_of?(class_or_module) 时，才通过。

@example

assert_not_kind_of(Fixnum, 'foo')           # -> pass
assert_not_kind_of([Fixnum, NilClass], '0') # -> pass
assert_not_kind_of([Fixnum, NilClass], 100) # -> fail

@since 3.0.0

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 516
def assert_not_kind_of(klass, object, message=nil)
  _wrap_assertion do
    if klass.is_a?(Array)
      klasses = klass
    else
      klasses = [klass]
    end
    assert_block("The first parameter to assert_not_kind_of should be " +
                 "a kind_of Module or an Array of a kind_of Module.") do
      klasses.all? {|k| k.kind_of?(Module)}
    end
    klass_message = AssertionMessage.maybe_container(klass) do |value|
      "<#{value}>"
    end
    full_message = build_message(message,
                                 "<?> was expected to not be kind_of\\?\n" +
                                 "? but was.",
                                 object,
                                 klass_message)
    assert_block(full_message) do
      klasses.none? {|k| object.kind_of?(k)}
    end
  end
end

也称为别名：refute_kind_of

assert_not_match(pattern, string, message=nil) 点击以切换源

如果 `regexp` !~ `string`，则通过

@example

assert_not_match(/two/, 'one 2 three')   # -> pass
assert_not_match(/three/, 'one 2 three') # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 775
def assert_not_match(pattern, string, message=nil)
  _wrap_assertion do
    pattern = Regexp.new(Regexp.escape(pattern)) if pattern.is_a?(String)
    full_message = build_message(message,
                                 "<?> was expected to not match\n<?>.",
                                 pattern, string)
    assert_block(full_message) { pattern !~ string }
  end
end

也称为别名：refute_match

assert_not_nil(object, message=nil) 点击以切换源

如果 ! `object` .nil?，则通过

@example

assert_not_nil '1 two 3'.sub!(/two/, '2')

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 757
def assert_not_nil(object, message=nil)
  full_message = build_message(message,
                               "<?> was expected to not be nil.",
                               object)
  assert_block(full_message){!object.nil?}
end

也称为别名：refute_nil

assert_not_operator(object1, operator, object2, message=nil) 点击以切换源

使用 `operator` 比较 `object1` 和 `object2`。

如果 object1.__send__(operator, object2) 的结果为 false 或 nil，则测试通过。

@example

assert_not_operator(5, :<, 4) # => pass
assert_not_operator(5, :>, 4) # => fail

@since 3.0.0

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 658
      def assert_not_operator(object1, operator, object2, message=nil)
        _wrap_assertion do
          full_message = build_message(nil, "<?>\ngiven as the operator for #assert_not_operator must be a Symbol or #respond_to\\?(:to_str).", operator)
          assert_block(full_message){operator.kind_of?(Symbol) || operator.respond_to?(:to_str)}
          full_message = build_message(message, <<EOT, object1, AssertionMessage.literal(operator), object2)
<?> was expected to not be
?
<?>.
EOT
          assert_block(full_message) { ! object1.__send__(operator, object2) }
        end
      end

也别名为：refute_operator

assert_not_predicate(object, predicate, message=nil) 点击以切换源代码

如果 ‘object`.`predicate` 的结果为 false 或 nil，则测试通过。

@example

assert_not_predicate([1], :empty?) # -> pass
assert_not_predicate([], :empty?)  # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1558
def assert_not_predicate(object, predicate, message=nil)
  _wrap_assertion do
    assert_respond_to(object, predicate, message)
    actual = object.__send__(predicate)
    full_message = build_message(message,
                                 "<?>.? is false value expected but was\n" +
                                 "<?>",
                                 object,
                                 AssertionMessage.literal(predicate),
                                 actual)
    assert_block(full_message) do
      not actual
    end
  end
end

也别名为：refute_predicate

assert_not_respond_to(object, method, message=nil) 点击以切换源代码

如果 ‘object` 不响应 `method`，则测试通过。

@example

assert_not_respond_to('bugbear', :nonexistence) # -> pass
assert_not_respond_to('bugbear', :size)         # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 574
def assert_not_respond_to(object, method, message=nil)
  _wrap_assertion do
    full_message = build_message(message,
                                 "<?>.kind_of\\?(Symbol) or\n" +
                                 "<?>.respond_to\\?(:to_str) expected",
                                 method, method)
    assert_block(full_message) do
      method.kind_of?(Symbol) or method.respond_to?(:to_str)
    end
    full_message = build_message(message,
                                 "!<?>.respond_to\\?(?) expected\n" +
                                 "(Class: <?>)",
                                 object, method, object.class)
    assert_block(full_message) {!object.respond_to?(method)}
  end
end

也别名为：refute_respond_to

assert_not_same(expected, actual, message=nil) 点击以切换源代码

如果 ! ‘actual` .equal? `expected`，则测试通过

@example

assert_not_same Object.new, Object.new

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 720
      def assert_not_same(expected, actual, message=nil)
        full_message = build_message(message, <<EOT, expected, expected.__id__, actual, actual.__id__)
<?>
with id <?> was expected to not be equal\\? to
<?>
with id <?>.
EOT
        assert_block(full_message) { !actual.equal?(expected) }
      end

也别名为：refute_same

assert_not_send(send_array, message=nil) 点击以切换源代码

如果方法 ‘__send__` 返回 false 或 nil，则测试通过。

‘send_array` 由以下部分组成：

接收者
方法
方法的参数

@example

assert_not_send([[1, 2], :member?, 1]) # -> fail
assert_not_send([[1, 2], :member?, 4]) # -> pass

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1323
      def assert_not_send(send_array, message=nil)
        _wrap_assertion do
          assert_instance_of(Array, send_array,
                             "assert_not_send requires an array " +
                             "of send information")
          assert_operator(send_array.size, :>=, 2,
                          "assert_not_send requires at least a receiver " +
                          "and a message name")
          format = <<EOT
<?> was expected to respond to
<?(*?)> with not a true value but was
<?>.
EOT
          receiver, message_name, *arguments = send_array
          result = nil
          full_message =
            build_message(message,
                          format,
                          receiver,
                          AssertionMessage.literal(message_name.to_s),
                          arguments,
                          AssertionMessage.delayed_literal {result})
          assert_block(full_message) do
            result = receiver.__send__(message_name, *arguments)
            not result
          end
        end
      end

assert_nothing_leaked_memory(max_increasable_size, target=:physical, message=nil) { || ... } 点击以切换源代码

@overload assert_nothing_leaked_memory(max_increasable_size, target=:physical, message=nil, &block)

Asserts that increased memory usage by `block.call` is less
than `max_increasable_size`. `GC.start` is called before and
after `block.call`.

This assertion may be fragile. Because memory usage is
depends on the current Ruby process's memory
usage. Launching a new Ruby process for this will produce
more stable result but we need to specify target code as
`String` instead of block for the approach. We choose easy
to write API approach rather than more stable result
approach for this case.

@example Pass pattern
  require "objspace"
  size_per_object = ObjectSpace.memsize_of("Hello")
  # If memory isn't leaked, physical memory of almost created objects
  # (1000 - 10 objects) must be freed.
  assert_nothing_leaked_memory(size_per_object * 10) do
    1_000.times do
      "Hello".dup
    end
  end # => pass

@example Failure pattern
  require "objspace"
  size_per_object = ObjectSpace.memsize_of("Hello")
  strings = []
  assert_nothing_leaked_memory(size_per_object * 10) do
    10_000.times do
      # Created objects aren't GC-ed because they are referred.
      strings << "Hello".dup
    end
  end # => failure

@param target [:physical, :virtual] which memory usage is
  used for comparing. `:physical` means physical memory usage
  also known as Resident Set Size (RSS). `:virtual` means
  virtual memory usage.
@yield [] do anything you want to measure memory usage
  in the block.
@yieldreturn [void]
@return [void]

@since 3.4.5

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1871
      def assert_nothing_leaked_memory(max_increasable_size,
                                       target=:physical,
                                       message=nil)
        _wrap_assertion do
          GC.start
          before = Util::MemoryUsage.new
          unless before.collected?
            omit("memory usage collection isn't supported on this platform")
          end
          yield
          GC.start
          after = Util::MemoryUsage.new
          before_value = before.__send__(target)
          after_value = after.__send__(target)
          actual_increased_size = after_value - before_value
          template = <<-TEMPLATE
<?> was expected to be less than
<?>.
          TEMPLATE
          full_message = build_message(message,
                                       template,
                                       actual_increased_size,
                                       max_increasable_size)
          assert_block(full_message) do
            actual_increased_size < max_increasable_size
          end
        end
      end

assert_nothing_raised(*args) { || ... } 点击以切换源代码

如果代码块没有抛出异常，则测试通过。

@example

assert_nothing_raised do
  [1, 2].uniq
end

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 683
def assert_nothing_raised(*args)
  _wrap_assertion do
    if args.last.is_a?(String)
      message = args.pop
    else
      message = ""
    end

    assert_exception_helper = AssertExceptionHelper.new(self, args)
    begin
      yield
    rescue Exception => e
      if ((args.empty? && !e.instance_of?(AssertionFailedError)) ||
          assert_exception_helper.expected?(e))
        failure_message = build_message(message, "Exception raised:\n?", e)
        assert_block(failure_message) {false}
      else
        raise
      end
    end
  end
end

assert_nothing_thrown(message=nil, &proc) 点击以切换源代码

如果代码块没有抛出任何东西，则测试通过。

@example

assert_nothing_thrown do
  [1, 2].uniq
end

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 903
def assert_nothing_thrown(message=nil, &proc)
  _wrap_assertion do
    assert(block_given?, "Should have passed a block to assert_nothing_thrown")
    begin
      proc.call
    rescue => error
      extractor = ThrowTagExtractor.new(error)
      tag = extractor.extract_tag
      raise if tag.nil?
      full_message = build_message(message,
                                   "<?> was thrown when nothing was expected",
                                   tag)
      flunk(full_message)
    end
    assert(true, "Expected nothing to be thrown")
  end
end

assert_operator(object1, operator, object2, message=nil) 点击以切换源代码

使用 `operator` 比较 `object1` 和 `object2`。

如果 object1.__send__(operator, object2) 的结果既不是 false 也不是 nil，则测试通过。

@example

assert_operator 5, :>=, 4

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 635
      def assert_operator(object1, operator, object2, message=nil)
        _wrap_assertion do
          full_message = build_message(nil, "<?>\ngiven as the operator for #assert_operator must be a Symbol or #respond_to\\?(:to_str).", operator)
          assert_block(full_message){operator.kind_of?(Symbol) || operator.respond_to?(:to_str)}
          full_message = build_message(message, <<EOT, object1, AssertionMessage.literal(operator), object2)
<?> was expected to be
?
<?>.
EOT
          assert_block(full_message) { object1.__send__(operator, object2) }
        end
      end

assert_path_exist(path, message=nil) 点击以切换源代码

如果 ‘path` 存在，则测试通过。

@example

assert_path_exist("/tmp")          # -> pass
assert_path_exist("/bin/sh")       # -> pass
assert_path_exist("/nonexistent")  # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1634
def assert_path_exist(path, message=nil)
  _wrap_assertion do
    failure_message = build_message(message,
                                    "<?> was expected to exist",
                                    path)
    assert_block(failure_message) do
      File.exist?(path)
    end
  end
end

assert_path_not_exist(path, message=nil) 点击以切换源代码

如果 ‘path` 不存在，则测试通过。

@example

assert_path_not_exist("/nonexistent")  # -> pass
assert_path_not_exist("/tmp")          # -> fail
assert_path_not_exist("/bin/sh")       # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1652
def assert_path_not_exist(path, message=nil)
  _wrap_assertion do
    failure_message = build_message(message,
                                    "<?> was expected to not exist",
                                    path)
    assert_block(failure_message) do
      not File.exist?(path)
    end
  end
end

assert_predicate(object, predicate, message=nil) 点击以切换源代码

如果 ‘object`.`predicate` 的结果既不是 false 也不是 nil，则测试通过。

@example

assert_predicate([], :empty?)  # -> pass
assert_predicate([1], :empty?) # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1536
def assert_predicate(object, predicate, message=nil)
  _wrap_assertion do
    assert_respond_to(object, predicate, message)
    actual = object.__send__(predicate)
    full_message = build_message(message,
                                 "<?>.? is true value expected but was\n" +
                                 "<?>",
                                 object,
                                 AssertionMessage.literal(predicate),
                                 actual)
    assert_block(full_message) do
      actual
    end
  end
end

assert_raise(*args, &block) 点击以切换源代码

如果代码块抛出期望的异常之一，则测试通过。当期望的异常是 Exception 对象时，如果 expected_exception == actual_exception，则测试通过。

@example

assert_raise(RuntimeError, LoadError) do
  raise 'Boom!!!'
end # -> pass

assert_raise do
  raise Exception, 'Any exception should be raised!!!'
end # -> pass

assert_raise(RuntimeError.new("XXX")) {raise "XXX"} # -> pass
assert_raise(MyError.new("XXX"))      {raise "XXX"} # -> fail
assert_raise(RuntimeError.new("ZZZ")) {raise "XXX"} # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 269
def assert_raise(*args, &block)
  assert_expected_exception = Proc.new do |*_args|
    message, assert_exception_helper, actual_exception = _args
    expected = assert_exception_helper.expected_exceptions
    diff = AssertionMessage.delayed_diff(expected, actual_exception)
    full_message = build_message(message,
                                 "<?> exception expected but was\n<?>.?",
                                 expected, actual_exception, diff)
    begin
      assert_block(full_message) do
        expected == [] or
          assert_exception_helper.expected?(actual_exception)
      end
    rescue AssertionFailedError => failure
      _set_failed_information(failure, expected, actual_exception)
      raise failure # For JRuby. :<
    end
  end
  _assert_raise(assert_expected_exception, *args, &block)
end

也别名为：assert_raises

assert_raise_kind_of(*args, &block) 点击以切换源代码

如果代码块抛出给定的异常之一或给定异常的子异常，则测试通过。

@example

assert_raise_kind_of(SystemCallError) do
  raise Errno::EACCES
end

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 366
def assert_raise_kind_of(*args, &block)
  assert_expected_exception = Proc.new do |*_args|
    message, assert_exception_helper, actual_exception = _args
    expected = assert_exception_helper.expected_exceptions
    full_message = build_message(message,
                                 "<?> family exception expected " +
                                 "but was\n<?>.",
                                 expected, actual_exception)
    assert_block(full_message) do
      assert_exception_helper.expected?(actual_exception, :kind_of?)
    end
  end
  _assert_raise(assert_expected_exception, *args, &block)
end

assert_raise_message(expected, message=nil) { || ... } 点击以切换源代码

如果代码块中抛出异常，并且其消息为 ‘expected`，则测试通过。

@example

assert_raise_message("exception") {raise "exception"}  # -> pass
assert_raise_message(/exc/i) {raise "exception"}       # -> pass
assert_raise_message("exception") {raise "EXCEPTION"}  # -> fail
assert_raise_message("exception") {}                   # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1464
def assert_raise_message(expected, message=nil)
  _wrap_assertion do
    full_message = build_message(message,
                                 "<?> exception message was expected " +
                                 "but none was thrown.",
                                 expected)
    exception = nil
    assert_block(full_message) do
      begin
        yield
        false
      rescue Exception => exception
        true
      end
    end

    actual = exception.message
    diff = AssertionMessage.delayed_diff(expected, actual)
    full_message =
      build_message(message,
                    "<?> exception message expected but was\n" +
                    "<?>.?", expected, actual, diff)
    assert_block(full_message) do
      if expected.is_a?(Regexp)
        expected =~ actual
      else
        expected == actual
      end
    end
  end
end

assert_raise_with_message(expected_exception_class, expected_message, message=nil, &block) 点击以切换源代码

如果代码块抛出 ‘expected_exception` 和 `expected_message`，则测试通过。`expected_message` 可以是 `String` 或 `Regexp`。

@example 通过模式：字符串

assert_raise_with_message(RuntimeError, "Boom!!!") do
  raise "Boom!!!"
end # -> pass

@example 通过模式：正则表达式

assert_raise_with_message(RuntimeError, /!!!/) do
  raise "Boom!!!"
end # -> pass

@example Failure 模式：异常类不匹配

assert_raise_with_message(RuntimeError, "Boom!!!") do
  raise ArgumentError, "Boom!!!"
end # -> failure

@example Failure 模式：异常消息不匹配

assert_raise_with_message(RuntimeError, "Boom!!!") do
  raise "Hello"
end # -> failure

@since 3.4.3

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 318
def assert_raise_with_message(expected_exception_class,
                              expected_message,
                              message=nil,
                              &block)
  assert_expected_exception = Proc.new do |*_args|
    _message, assert_exception_helper, actual_exception = _args
    diff = AssertionMessage.delayed_diff([
                                           expected_exception_class,
                                           expected_message,
                                         ],
                                         [
                                           actual_exception.class,
                                           actual_exception.message,
                                         ])
    full_message = build_message(message,
                                 "<?>(<?>) exception expected but was\n" +
                                 "<?>(<?>).?",
                                 expected_exception_class,
                                 expected_message,
                                 actual_exception.class,
                                 actual_exception.message,
                                 diff)
    begin
      assert_block(full_message) do
        assert_exception_helper.expected?(actual_exception) and
          expected_message === actual_exception.message
      end
    rescue AssertionFailedError => failure
      _set_failed_information(failure,
                              expected_exception_class,
                              actual_exception)
      raise failure # For JRuby. :<
    end
    actual_exception
  end
  args = [expected_exception_class]
  args << message if message
  _assert_raise(assert_expected_exception, *args, &block)
end

assert_raises(*args, &block)

仅用于 minitest 兼容性。 :<

别名为：assert_raise

assert_respond_to(object, method, message=nil) 点击以切换源代码

如果 ‘object` .respond_to? `method`，则测试通过。

@example

assert_respond_to 'bugbear', :slice

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 551
def assert_respond_to(object, method, message=nil)
  _wrap_assertion do
    full_message = build_message(message,
                                 "<?>.kind_of\\?(Symbol) or\n" +
                                 "<?>.respond_to\\?(:to_str) expected",
                                 method, method)
    assert_block(full_message) do
      method.kind_of?(Symbol) or method.respond_to?(:to_str)
    end
    full_message = build_message(message,
                                 "<?>.respond_to\\?(?) expected\n" +
                                 "(Class: <?>)",
                                 object, method, object.class)
    assert_block(full_message) {object.respond_to?(method)}
  end
end

assert_same(expected, actual, message=nil) 点击以切换源代码

如果 ‘actual` .equal? `expected`（即它们是同一个实例），则测试通过。

@example

o = Object.new
assert_same o, o

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 618
      def assert_same(expected, actual, message=nil)
        full_message = build_message(message, <<EOT, expected, expected.__id__, actual, actual.__id__)
<?>
with id <?> was expected to be equal\\? to
<?>
with id <?>.
EOT
        assert_block(full_message) { actual.equal?(expected) }
      end

assert_send(send_array, message=nil) 点击以切换源代码

如果方法 ‘__send__` 返回的结果既不是 false 也不是 nil，则测试通过。

‘send_array` 由以下部分组成：

接收者
方法
方法的参数

@example

assert_send([[1, 2], :member?, 1]) # -> pass
assert_send([[1, 2], :member?, 4]) # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1283
      def assert_send(send_array, message=nil)
        _wrap_assertion do
          assert_instance_of(Array, send_array,
                             "assert_send requires an array " +
                             "of send information")
          assert_operator(send_array.size, :>=, 2,
                          "assert_send requires at least a receiver " +
                          "and a message name")
          format = <<EOT
<?> was expected to respond to
<?(*?)> with a true value but was
<?>.
EOT
          receiver, message_name, *arguments = send_array
          result = nil
          full_message =
            build_message(message,
                          format,
                          receiver,
                          AssertionMessage.literal(message_name.to_s),
                          arguments,
                          AssertionMessage.delayed_literal {result})
          assert_block(full_message) do
            result = receiver.__send__(message_name, *arguments)
            result
          end
        end
      end

assert_throw(expected_object, message=nil, &proc) 点击以切换源代码

如果代码块抛出 ‘expected_object`，则测试通过。

@example

assert_throw(:done) do
  throw(:done)
end

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 857
def assert_throw(expected_object, message=nil, &proc)
  _wrap_assertion do
    begin
      catch([]) {}
    rescue TypeError
      assert_instance_of(Symbol, expected_object,
                         "assert_throws expects the symbol that should be thrown for its first argument")
    end
    assert_block("Should have passed a block to assert_throw.") do
      block_given?
    end
    caught = true
    begin
      catch(expected_object) do
        proc.call
        caught = false
      end
      full_message = build_message(message,
                                   "<?> should have been thrown.",
                                   expected_object)
      assert_block(full_message) {caught}
    rescue => error
      extractor = ThrowTagExtractor.new(error)
      tag = extractor.extract_tag
      raise if tag.nil?
      full_message = build_message(message,
                                   "<?> was expected to be thrown but\n" +
                                   "<?> was thrown.",
                                   expected_object, tag)
      flunk(full_message)
    end
  end
end

也别名为：assert_throws

assert_throws(expected_object, message=nil, &proc)

仅用于 minitest 兼容性。 :<

@since 2.5.3

别名为：assert_throw

assert_true(actual, message=nil) 点击以切换源代码

如果 ‘actual` 为 true，则测试通过。

@example

assert_true(true)  # -> pass
assert_true(:true) # -> fail

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1374
def assert_true(actual, message=nil)
  _wrap_assertion do
    assert_block(build_message(message,
                               "<true> expected but was\n<?>",
                               actual)) do
      true == actual
    end
  end
end

build_message(user_message, template=nil, *arguments) 点击以切换源代码

构建失败消息。‘user_message` 添加在 `template` 之前，并且 `arguments` 按位置替换模板中的 '?'。

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1904
def build_message(user_message, template=nil, *arguments)
  template &&= template.chomp
  return AssertionMessage.new(user_message, template, arguments)
end

flunk(message="Flunked") 点击以切换源代码

flunk 总是失败。

@example

flunk 'Not done testing yet.'

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 711
def flunk(message="Flunked")
  assert_block(build_message(message)){false}
end

refute(object, message=nil) 点击以切换源代码

断言 ‘object` 为 false 或 nil。

@note 仅用于 minitest 兼容性。 :<

@param [Object] object 要断言的对象。 @return [void]

@example 通过模式

refute(false)    # => pass
refute(nil)      # => pass

@example Failure 模式

refute(true)     # => failure
refute("string") # => failure

@since 2.5.3

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 191
def refute(object, message=nil)
  _wrap_assertion do
    assertion_message = nil
    case message
    when nil, String, Proc
    when AssertionMessage
      assertion_message = message
    else
      error_message = "assertion message must be String, Proc or "
      error_message += "#{AssertionMessage}: "
      error_message += "<#{message.inspect}>(<#{message.class}>)"
      raise ArgumentError, error_message, filter_backtrace(caller)
    end
    assert_block("refute should not be called with a block.") do
      !block_given?
    end
    assertion_message ||= build_message(message,
                                        "<?> is neither nil or false.",
                                        object)
    assert_block(assertion_message) do
      not object
    end
  end
end

refute_empty(object, message=nil)

仅用于 minitest 兼容性。 :<

@since 3.0.0

别名为：assert_not_empty

refute_equal(expected, actual, message=nil)

仅用于 minitest 兼容性。 :<

@since 2.5.3

别名为：assert_not_equal

refute_in_delta(expected_float, actual_float, delta=0.001, message="")

仅用于 minitest 兼容性。 :<

@since 2.5.3

别名为：assert_not_in_delta

refute_in_epsilon(expected_float, actual_float, epsilon=0.001, message="")

仅用于 minitest 兼容性。 :<

@since 3.0.0

别名为：assert_not_in_epsilon

refute_includes(collection, object, message=nil)

仅用于 minitest 兼容性。 :<

@since 3.0.0

别名：assert_not_include

refute_instance_of(klass, object, message=nil)

仅用于 minitest 兼容性。 :<

@since 3.0.0

别名为：assert_not_instance_of

refute_kind_of(klass, object, message=nil)

仅用于 minitest 兼容性。 :<

@since 3.0.0

别名为：assert_not_kind_of

refute_match(pattern, string, message=nil)

仅用于 minitest 兼容性。 :<

@since 2.5.3

别名为：assert_not_match

refute_nil(object, message=nil)

仅用于 minitest 兼容性。 :<

@since 2.5.3

别名为：assert_not_nil

refute_operator(object1, operator, object2, message=nil)

仅用于 minitest 兼容性。 :<

@since 3.0.0

别名为：assert_not_operator

refute_predicate(object, predicate, message=nil)

仅用于 minitest 兼容性。 :<

@since 3.0.0

别名为：assert_not_predicate

refute_respond_to(object, method, message=nil)

仅用于 minitest 兼容性。 :<

@since 2.5.3

别名为：assert_not_respond_to

refute_same(expected, actual, message=nil)

仅用于 minitest 兼容性。 :<

@since 2.5.3

别名为：assert_not_same

私有实例方法

_assert_in_delta_message(expected_float, normalized_expected, actual_float, normalized_actual, delta, normalized_delta, message, options={}) 点击以切换源代码

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1028
      def _assert_in_delta_message(expected_float, normalized_expected,
                                   actual_float, normalized_actual,
                                   delta, normalized_delta,
                                   message, options={})
        if options[:negative_assertion]
          format = <<-EOT
<?> -/+ <?> was expected to not include
<?>.
EOT
        else
          format = <<-EOT
<?> -/+ <?> was expected to include
<?>.
EOT
        end
        arguments = [expected_float, delta, actual_float]
        relation_format = nil
        relation_arguments = nil
        if normalized_actual < normalized_expected - normalized_delta
          relation_format = "<<?> < <?>-<?>[?] <= <?>+<?>[?]>"
          relation_arguments = [actual_float,
                                expected_float, delta,
                                normalized_expected - normalized_delta,
                                expected_float, delta,
                                normalized_expected + normalized_delta]
        elsif normalized_actual <= normalized_expected + normalized_delta
          relation_format = "<<?>-<?>[?] <= <?> <= <?>+<?>[?]>"
          relation_arguments = [expected_float, delta,
                                normalized_expected - normalized_delta,
                                actual_float,
                                expected_float, delta,
                                normalized_expected + normalized_delta]
        else
          relation_format = "<<?>-<?>[?] <= <?>+<?>[?] < <?>>"
          relation_arguments = [expected_float, delta,
                                normalized_expected - normalized_delta,
                                expected_float, delta,
                                normalized_expected + normalized_delta,
                                actual_float]
        end

        if relation_format
          format += <<-EOT

Relation:
#{relation_format}
EOT
          arguments.concat(relation_arguments)
        end

        build_message(message, format, *arguments)
      end

_assert_in_delta_validate_arguments(expected_float, actual_float, delta) 点击以切换源代码

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1012
def _assert_in_delta_validate_arguments(expected_float,
                                        actual_float,
                                        delta)
  {
    expected_float => "first float",
    actual_float => "second float",
    delta => "delta"
  }.each do |float, name|
    assert_respond_to(float, :to_f,
                      "The arguments must respond to to_f; " +
                      "the #{name} did not")
  end
  delta = delta.to_f
  assert_operator(delta, :>=, 0.0, "The delta should not be negative")
end

_assert_in_epsilon_message(expected_float, normalized_expected, actual_float, normalized_actual, epsilon, normalized_epsilon, delta, message, options={}) 点击以切换源代码

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1216
      def _assert_in_epsilon_message(expected_float, normalized_expected,
                                     actual_float, normalized_actual,
                                     epsilon, normalized_epsilon,
                                     delta, message, options={})
        if options[:negative_assertion]
          format = <<-EOT
<?> -/+ (<?> * <?>)[?] was expected to not include
<?>.
EOT
        else
          format = <<-EOT
<?> -/+ (<?> * <?>)[?] was expected to include
<?>.
EOT
        end
        arguments = [expected_float, expected_float, epsilon, delta,
                     actual_float]

        relation_format = nil
        relation_arguments = nil
        if normalized_actual < normalized_expected - delta
          relation_format = "<<?> < <?>-(<?>*<?>)[?] <= <?>+(<?>*<?>)[?]>"
          relation_arguments = [actual_float,
                                expected_float, expected_float, epsilon,
                                normalized_expected - delta,
                                expected_float, expected_float, epsilon,
                                normalized_expected + delta]
        elsif normalized_actual <= normalized_expected + delta
          relation_format = "<<?>-(<?>*<?>)[?] <= <?> <= <?>+(<?>*<?>)[?]>"
          relation_arguments = [expected_float, expected_float, epsilon,
                                normalized_expected - delta,
                                actual_float,
                                expected_float, expected_float, epsilon,
                                normalized_expected + delta]
        else
          relation_format = "<<?>-(<?>*<?>)[?] <= <?>+(<?>*<?>)[?] < <?>>"
          relation_arguments = [expected_float, expected_float, epsilon,
                                normalized_expected - delta,
                                expected_float, expected_float, epsilon,
                                normalized_expected + delta,
                                actual_float]
        end

        if relation_format
          format += <<-EOT

Relation:
#{relation_format}
EOT
          arguments.concat(relation_arguments)
        end

        build_message(message, format, *arguments)
      end

_assert_in_epsilon_validate_arguments(expected_float, actual_float, epsilon) 点击以切换源代码

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1200
def _assert_in_epsilon_validate_arguments(expected_float,
                                          actual_float,
                                          epsilon)
  {
    expected_float => "first float",
    actual_float => "second float",
    epsilon => "epsilon"
  }.each do |float, name|
    assert_respond_to(float, :to_f,
                      "The arguments must respond to to_f; " +
                      "the #{name} did not")
  end
  epsilon = epsilon.to_f
  assert_operator(epsilon, :>=, 0.0, "The epsilon should not be negative")
end

_assert_raise(assert_expected_exception, *args) { || ... } 点击以切换源代码

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1944
def _assert_raise(assert_expected_exception, *args, &block)
  _wrap_assertion do
    if args.last.is_a?(String)
      message = args.pop
    else
      message = ""
    end

    assert_exception_helper = AssertExceptionHelper.new(self, args)
    expected = assert_exception_helper.expected_exceptions
    actual_exception = nil
    full_message = build_message(message,
                                 "<?> exception was expected " +
                                 "but none was thrown.",
                                 expected)
    assert_block(full_message) do
      begin
        yield
        false
      rescue Exception => actual_exception
        true
      end
    end
    assert_expected_exception.call(message, assert_exception_helper,
                                   actual_exception)
    actual_exception
  end
end

_set_failed_information(failure, expected, actual) 点击以切换源代码

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1973
def _set_failed_information(failure, expected, actual)
  failure.expected = expected
  failure.actual = actual
  failure.inspected_expected = AssertionMessage.convert(expected)
  failure.inspected_actual = AssertionMessage.convert(actual)
end

_wrap_assertion(&block) 点击以切换源代码

# File test-unit-3.6.7/lib/test/unit/assertions.rb, line 1910
def _wrap_assertion(&block)
  @_assertion_wrapped ||= false
  if @_assertion_wrapped
    block.call
  else
    @_assertion_wrapped = true
    begin
      add_assertion
      block.call
    ensure
      @_assertion_wrapped = false
    end
  end
end