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Use the its() method as a short-hand to generate a nested example group with
a single example that specifies the expected value of an attribute of the subject.
This can be used with an implicit or explicit subject.
its() accepts a symbol or a string, and a block representing the example. Use
a string with dots to specify a nested attribute (i.e. an attribute of the
attribute of the subject).
- Scenarios
-
- simple attribute
-
- Given
-
a file named "example_spec.rb" with:
describe Array do its(:size) { should == 0 } end
- When
- I run "rspec example_spec.rb --format documentation"
- Then
-
the output should contain:
Array size should == 0
- nested attribute
-
- Given
-
a file named "example_spec.rb" with:
class Person attr_reader :phone_numbers def initialize @phone_numbers = [] end end describe Person do subject do person = Person.new person.phone_numbers << "555-1212" person end its("phone_numbers.first") { should == "555-1212" } end
- When
- I run "rspec example_spec.rb --format documentation"
- Then
-
the output should contain:
Person phone_numbers.first should == "555-1212"
Last published over 7 years ago by .