I suspect you want the useFakeTimers function: var now = new Date(); var clock = sinon.useFakeTimers(now.getTime()); //assertions clock.restore(); This is plain JS. A working TypeScript/JavaScript example: var now = new Date(); beforeEach(() => { sandbox = sinon.sandbox.create(); clock = sinon.useFakeTimers(now.getTime()); }); afterEach(() => { sandbox.restore(); clock.restore(); });
# Create a mock object book = MiniTest::Mock.new # Set the mock to expect :title, return “War and Piece” # (note that unless we call book.verify, minitest will # not check that :title was called) book.expect :title, “War and Piece” # Stub Book.new to return the mock object # (only within the scope of the …
You can stub a method to return different values each time it’s called; allow(@family).to receive(:location).and_return(‘first’, ‘second’, ‘other’) So the first time you call @family.location it will return ‘first’, the second time it will return ‘second’, and all subsequent times you call it, it will return ‘other’.
From my understanding of process.env, you can simply treat it like any other variable when setting its properties. Keep in mind, though, that every value in process.env must be a string. So, if you need a particular value in your test: it(‘does something interesting’, () => { process.env.NODE_ENV = ‘test’; // … }); To avoid …
Attention: I am going to oversimplify and maybe even slightly falsify in the upcoming paragraphs. For more detailed info see Martin Fowler’s website. A mock is a dummy class replacing a real one, returning something like null or 0 for each method call. You use a mock if you need a dummy instance of a …
Martin Fowler wrote an excellent article on this subject. From that article: Meszaros uses the term Test Double as the generic term for any kind of pretend object used in place of a real object for testing purposes. The name comes from the notion of a Stunt Double in movies. (One of his aims was …
A stub is a controllable replacement for an Existing Dependency (or collaborator) in the system. By using a stub, you can test your code without dealing with the dependency directly. External Dependency – Existing Dependency: It is an object in your system that your code under test interacts with and over which you have no …
There’s another solution that also works. Go to the Build Path settings in the project properties. Remove the JRE System Library Add it back; Select “Add Library” and select the JRE System Library. The default worked for me. This works because you have multiple classes in different jar files. Removing and re-adding the JRE lib …
Foreword There are several definitions of objects, that are not real. The general term is test double. This term encompasses: dummy, fake, stub, mock. Reference According to Martin Fowler’s article: Dummy objects are passed around but never actually used. Usually they are just used to fill parameter lists. Fake objects actually have working implementations, but …