Module: RSpec::Matchers::FailMatchers

Defined in:
lib/rspec/matchers/fail_matchers.rb

Overview

Matchers for testing RSpec matchers. Include them with:

require 'rspec/matchers/fail_matchers'
RSpec.configure do |config|
  config.include RSpec::Matchers::FailMatchers
end

Instance Method Summary collapse

Instance Method Details

#fail(&block) ⇒ Object

Matches if an expectation fails

Examples:

expect { some_expectation }.to fail
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# File 'lib/rspec/matchers/fail_matchers.rb', line 17
def fail(&block)
  raise_error(RSpec::Expectations::ExpectationNotMetError, &block)
end

#fail_including(*snippets) ⇒ Object

Matches if an expectation fails including the provided message

Examples:

expect { some_expectation }.to fail_including("portion of some failure message")
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# File 'lib/rspec/matchers/fail_matchers.rb', line 34
def fail_including(*snippets)
  raise_error(
    RSpec::Expectations::ExpectationNotMetError,
    a_string_including(*snippets)
  )
end

#fail_with(message) ⇒ Object

Matches if an expectation fails with the provided message

Examples:

expect { some_expectation }.to fail_with("some failure message")
expect { some_expectation }.to fail_with(/some failure message/)
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# File 'lib/rspec/matchers/fail_matchers.rb', line 26
def fail_with(message)
  raise_error(RSpec::Expectations::ExpectationNotMetError, message)
end