How to use negative_failure_message method of RSpec.Matchers Package

Best Spork_ruby code snippet using RSpec.Matchers.negative_failure_message

handler.rb

Source:handler.rb

...120        end121      end122      # Before RSpec 1.2, the failure message protocol was:123      #   * `failure_message`124      #   * `negative_failure_message`125      # @private126      class RSpec1 < self127        def failure_message128          base_matcher.failure_message129        end130        def failure_message_when_negated131          base_matcher.negative_failure_message132        end133        # Note: `failure_message` is part of the RSpec 3 protocol134        # (paired with `failure_message_when_negated`), so we don't check135        # for `failure_message` here.136        def self.interface_matches?(matcher)137          !matcher.respond_to?(:failure_message_when_negated) &&138          matcher.respond_to?(:negative_failure_message)139        end140      end141    end142    # RSpec 3.0 was released with the class name misspelled. For SemVer compatibility,143    # we will provide this misspelled alias until 4.0.144    # @deprecated Use LegacyMatcherAdapter instead.145    # @private146    LegacyMacherAdapter = LegacyMatcherAdapter147  end148end...

negative_failure_message

Using AI Code Generation

1 it { should_not be_a_multiple_of(3) }2 it { should_not be_a_multiple_of(3) }3 it { should_not be_a_multiple_of(3) }

negative_failure_message

Using AI Code Generation

1  it { is_expected.to be_a_multiple_of 3 }2  it { is_expected.not_to be_a_multiple_of 4 }3Finished in 0.00108 seconds (files took 0.09896 seconds to load)4     Failure/Error: it { is_expected.not_to be_a_multiple_of 4 }5Finished in 0.00102 seconds (files took 0.09727 seconds to load)6Custom matcher is a class that inherits from RSpec::Matchers::BuiltIn::BaseMatcher class. This class has a number of methods that can be overridden to customize the matcher. The most important methods are:7  def initialize(expected)8  def matches?(actual)

negative_failure_message

Using AI Code Generation

1    expect(subject.my_method).to be_truthy2    expect(subject.my_method).to be_falsy3    expect(subject.my_method).to be_truthy4    expect(subject.my_method).to be_falsy5Failure/Error: expect(subject.my_method).to be_falsy

negative_failure_message

Using AI Code Generation

1  it { should be_a_multiple_of 3 }2Failure/Error: it { should be_a_multiple_of 3 }3  it { should_not be_a_multiple_of 3 }4Failure/Error: it { should_not be_a_multiple_of 3 }

negative_failure_message

Using AI Code Generation

1  it { is_expected.to be_a_multiple_of(3) }2  it { is_expected.not_to be_a_multiple_of(5) }3  it { is_expected.to be_a_multiple_of(3) }4  it { is_expected.not_to be_a_multiple_of(5) }

negative_failure_message

Using AI Code Generation

1      SimpleMatcher.new("be true") do |actual|2      def initialize(description, &implementation)3      def matches?(actual)4        @implementation.call(actual)

negative_failure_message

Using AI Code Generation

1    expect(1).to eq(2)2RSpec::Core::Runner.run([File.expand_path('1.rb', __dir__)])3RSpec::Core::Runner.run([File.expand_path('1.rb', __dir__)])4RSpec::Core::Runner.run([File.expand_path('1.rb', __dir__)])

negative_failure_message

Using AI Code Generation

1    expect(10).to be_multiple_of(5)2    expect(10).not_to be_multiple_of(3)3    expect(10).to be_multiple_of(5)4    expect(10).not_to be_multiple_of(3)5Failure/Error: it { should be_a_multiple_of 3 }6  it { should_not be_a_multiple_of 3 }7Failure/Error: it { should_not be_a_multiple_of 3 }

negative_failure_message

Using AI Code Generation

1  it { is_expected.to be_a_multiple_of(3) }2  it { is_expected.not_to be_a_multiple_of(5) }3  it { is_expected.to be_a_multiple_of(3) }4  it { is_expected.not_to be_a_multiple_of(5) }

negative_failure_message

Using AI Code Generation

1    expect(1).to eq(2)2RSpec::Core::Runner.run([File.expand_path('1.rb', __dir__)])3RSpec::Core::Runner.run([File.expand_path('1.rb', __dir__)])4RSpec::Core::Runner.run([File.expand_path('1.rb', __dir__)])

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