Module: RSpec::Core::MemoizedHelpers
- Included in:
- ExampleGroup
- Defined in:
- lib/rspec/core/memoized_helpers.rb
Defined Under Namespace
Modules: ClassMethods
Instance Method Summary collapse
-
#should(matcher = nil, message = nil) ⇒ Object
When
should
is called with no explicit receiver, the call is delegated to the object returned bysubject
. -
#should_not(matcher = nil, message = nil) ⇒ Object
Just like
should
,should_not
delegates to the subject (implicit or explicit) of the example group. - #subject ⇒ Object
Instance Method Details
#should(matcher = nil, message = nil) ⇒ Object
When should
is called with no explicit receiver, the call is
delegated to the object returned by subject
. Combined with an
implicit subject this supports very concise expressions.
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# File 'lib/rspec/core/memoized_helpers.rb', line 67 def should(matcher=nil, =nil) RSpec::Expectations::PositiveExpectationHandler.handle_matcher(subject, matcher, ) end |
#should_not(matcher = nil, message = nil) ⇒ Object
Just like should
, should_not
delegates to the subject (implicit or
explicit) of the example group.
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# File 'lib/rspec/core/memoized_helpers.rb', line 81 def should_not(matcher=nil, =nil) RSpec::Expectations::NegativeExpectationHandler.handle_matcher(subject, matcher, ) end |
#subject ⇒ Object
subject
was contributed by Joe Ferris to support the one-liner
syntax embraced by shoulda matchers:
describe Widget do
it { should validate_presence_of(:name) }
end
While the examples below demonstrate how to use subject
explicitly in examples, we recommend that you define a method with
an intention revealing name instead.
Because subject
is designed to create state that is reset between
each example, and before(:all)
is designed to setup state that is
shared across all examples in an example group, subject
is not
intended to be used in a before(:all)
hook. RSpec 2.13.1 prints
a warning when you reference a subject
from before(:all)
and we plan
to have it raise an error in RSpec 3.
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# File 'lib/rspec/core/memoized_helpers.rb', line 47 def subject __memoized.fetch(:subject) do __memoized[:subject] = begin described = described_class || self.class.description Class === described ? described.new : described end end end |