To add a collaborator to this project you will need to use the Relish gem to add the collaborator via a terminal command. Soon you'll be able to also add collaborators here!
More about adding a collaboratorStub a chain of methods
The stub_chain method lets you to stub a chain of methods in one statement.
Method chains are considered a design smell, but it's not really the method
chain that is the problem - it's the dependency chain represented by a chain
of messages to different objects:
foo.get_bar.get_baz
This is a Law of Demeter violation if get_bar() returns an object other than
foo, and get_baz() returns yet another object.
Fluent interfaces look similar from a caller's perspective, but don't
represent a dependency chain (the caller depends only on the object it is
calling). Consider this common example from Ruby on Rails:
Article.recent.by(current_user)
The recent() and by() methods return the same object, so this is not
a Law of Demeter violation.
- Scenarios
-
- stub a chain of methods
-
- Given
-
a file named "stub_chain_spec.rb" with:
describe "stubbing a chain of methods" do subject { Object.new } context "given symbols representing methods" do it "returns the correct value" do subject.stub_chain(:one, :two, :three).and_return(:four) subject.one.two.three.should eq(:four) end end context "given a string of methods separated by dots" do it "returns the correct value" do subject.stub_chain("one.two.three").and_return(:four) subject.one.two.three.should eq(:four) end end end
- When
- I run "rspec stub_chain_spec.rb"
- Then
- the output should contain "2 examples, 0 failures"
Last published over 7 years ago by .