Mock vs stub
- Stub
Returns canned responses, avoiding any meaningful computation or I/O
=> Tra ve ket qua a ex:
allow(some_object).to receive(some_method).and_return(some_value)
- Mock
Expects specific messages; will raise an error if it doesn’t receive them by the end of the example
ex:
expect(some_object).to receive(some_method).and_return(some_value)
Double
double(*args) public Shortcut for creating an instance of Spec::Mocks::Mock.
name is used for failure reporting, so you should use the role that the double is playing in the example.
stubs_and_options lets you assign options and stub values at the same time. The only option available is :null_object. Anything else is treated as a stub value.
Ex:
thing = double(“thing”, :a => “A”) thing.a == “A” => true person = double(“thing”, :name => “Joe”, :email => “joe@domain.com”) person.name => “Joe” person.email => “joe@domain.com”
