Module Spec::Example::Subject::ExampleMethods

  1. lib/spec/example/subject.rb

Methods

public instance

  1. should
  2. should_not
  3. subject

Public instance methods

should (matcher=nil)

When should is called with no explicit receiver, the call is delegated to the object returned by subject. Combined with an implicit subject (see subject), this supports very concise expressions.

Examples

describe Person do
  it { should be_eligible_to_vote }
end
[show source]
# File lib/spec/example/subject.rb, line 65
        def should(matcher=nil)
          if matcher
            subject.should(matcher)
          else
            subject.should
          end
        end
should_not (matcher=nil)

Just like should, should_not delegates to the subject (implicit or explicit) of the example group.

Examples

describe Person do
  it { should_not be_eligible_to_vote }
end
[show source]
# File lib/spec/example/subject.rb, line 81
        def should_not(matcher=nil)
          if matcher
            subject.should_not(matcher)
          else
            subject.should_not
          end
        end
subject ()

Returns the subject defined in ExampleGroupMethods#subject. The subject block is only executed once per example, the result of which is cached and returned by any subsequent calls to subject.

If a class is passed to describe and no subject is explicitly declared in the example group, then subject will return a new instance of that class.

Examples

# explicit subject defined by the subject method
describe Person do
  subject { Person.new(:birthdate => 19.years.ago) }
  it "should be eligible to vote" do
    subject.should be_eligible_to_vote
  end
end

# implicit subject => { Person.new }
describe Person do
  it "should be eligible to vote" do
    subject.should be_eligible_to_vote
  end
end
[show source]
# File lib/spec/example/subject.rb, line 51
        def subject
          @subject ||= instance_eval(&self.class.subject)
        end