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 Defined Constant
Use stub_const
to stub constants. When the constant is already defined, the stubbed value
will replace the original value for the duration of the example.
- Scenarios
-
- Stub top-level constant
-
- Given
-
a file named "stub_const_spec.rb" with:
FOO = 7 RSpec.describe "stubbing FOO" do it "can stub FOO with a different value" do stub_const("FOO", 5) expect(FOO).to eq(5) end it "restores the stubbed constant when the example completes" do expect(FOO).to eq(7) end end
- When
-
I run
rspec stub_const_spec.rb
- Then
- the examples should all pass
- Stub nested constant
-
- Given
-
a file named "stub_const_spec.rb" with:
module MyGem class SomeClass FOO = 7 end end module MyGem RSpec.describe SomeClass do it "stubs the nested constant when it is fully qualified" do stub_const("MyGem::SomeClass::FOO", 5) expect(SomeClass::FOO).to eq(5) end end end
- When
-
I run
rspec stub_const_spec.rb
- Then
- the examples should all pass
- Transfer nested constants
-
- Given
-
a file named "stub_const_spec.rb" with:
module MyGem class SomeClass FOO = 7 end end module MyGem RSpec.describe SomeClass do let(:fake_class) { Class.new } it "does not transfer nested constants by default" do stub_const("MyGem::SomeClass", fake_class) expect { SomeClass::FOO }.to raise_error(NameError) end it "transfers nested constants when using :transfer_nested_constants => true" do stub_const("MyGem::SomeClass", fake_class, :transfer_nested_constants => true) expect(SomeClass::FOO).to eq(7) end it "can specify a list of nested constants to transfer" do stub_const("MyGem::SomeClass", fake_class, :transfer_nested_constants => [:FOO]) expect(SomeClass::FOO).to eq(7) end end end
- When
-
I run
rspec stub_const_spec.rb
- Then
- the examples should all pass
Last published about 2 years ago by Jon Rowe.