Module: RSpec::Expectations::Syntax Private

Defined in:
lib/rspec/expectations/syntax.rb

Overview

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Provides methods for enabling and disabling the available syntaxes provided by rspec-expectations.

Class Method Summary collapse

Class Method Details

.default_should_host ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Determines where we add should and should_not.

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# File 'lib/rspec/expectations/syntax.rb', line 11
def default_should_host
  @default_should_host ||= ::Object.ancestors.last
end

.disable_expect(syntax_host = ::RSpec::Matchers) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Disables the expect syntax.

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# File 'lib/rspec/expectations/syntax.rb', line 80
def disable_expect(syntax_host=::RSpec::Matchers)
  return unless expect_enabled?(syntax_host)
  syntax_host.module_exec do
    undef expect
  end
end

.disable_should(syntax_host = default_should_host) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Disables the should syntax.

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# File 'lib/rspec/expectations/syntax.rb', line 57
def disable_should(syntax_host=default_should_host)
  return unless should_enabled?(syntax_host)
  syntax_host.module_exec do
    undef should
    undef should_not
  end
end

.enable_expect(syntax_host = ::RSpec::Matchers) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Enables the expect syntax.

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# File 'lib/rspec/expectations/syntax.rb', line 68
def enable_expect(syntax_host=::RSpec::Matchers)
  return if expect_enabled?(syntax_host)
  syntax_host.module_exec do
    def expect(value=::RSpec::Expectations::ExpectationTarget::UndefinedValue, &block)
      ::RSpec::Expectations::ExpectationTarget.for(value, block)
    end
  end
end

.enable_should(syntax_host = default_should_host) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Enables the should syntax.

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# File 'lib/rspec/expectations/syntax.rb', line 38
def enable_should(syntax_host=default_should_host)
  @warn_about_should = false if syntax_host == default_should_host
  return if should_enabled?(syntax_host)
  syntax_host.module_exec do
    def should(matcher=nil, message=nil, &block)
      ::RSpec::Expectations::Syntax.warn_about_should_unless_configured(::Kernel.__method__)
      ::RSpec::Expectations::PositiveExpectationHandler.handle_matcher(self, matcher, message, &block)
    end
    def should_not(matcher=nil, message=nil, &block)
      ::RSpec::Expectations::Syntax.warn_about_should_unless_configured(::Kernel.__method__)
      ::RSpec::Expectations::NegativeExpectationHandler.handle_matcher(self, matcher, message, &block)
    end
  end
end

.expect_enabled?(syntax_host = ::RSpec::Matchers) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Indicates whether or not the expect syntax is enabled.

Returns:

  • (Boolean) 
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# File 'lib/rspec/expectations/syntax.rb', line 96
def expect_enabled?(syntax_host=::RSpec::Matchers)
  syntax_host.method_defined?(:expect)
end

.should_enabled?(syntax_host = default_should_host) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Indicates whether or not the should syntax is enabled.

Returns:

  • (Boolean) 
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# File 'lib/rspec/expectations/syntax.rb', line 90
def should_enabled?(syntax_host=default_should_host)
  syntax_host.method_defined?(:should)
end

.warn_about_should! ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Instructs rspec-expectations to warn on first usage of should or should_not. Enabled by default. This is largely here to facilitate testing.

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# File 'lib/rspec/expectations/syntax.rb', line 18
def warn_about_should!
  @warn_about_should = true
end

.warn_about_should_unless_configured(method_name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Generates a deprecation warning for the given method if no warning has already been issued.

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# File 'lib/rspec/expectations/syntax.rb', line 25
def warn_about_should_unless_configured(method_name)
  return unless @warn_about_should
  RSpec.deprecate(
    "Using `#{method_name}` from rspec-expectations' old `:should` syntax without explicitly enabling the syntax",
    :replacement => "the new `:expect` syntax or explicitly enable `:should` with `config.expect_with(:rspec) { |c| c.syntax = :should }`"
  )
  @warn_about_should = false
end