siesta-lite/examples/browser/1.unit-tests/spies.t.js

Stress-free JavaScript unit testing and functional testing tool, works in NodeJS and browsers

StartTest(function (t) {

    t.it("Should be able to create a spy", t => {
        var spy = t.createSpy('007')

        spy()
        spy(0, 1)
        spy(0, 1, '1')

        t.expect(spy).toHaveBeenCalled()
        t.expect(spy).toHaveBeenCalledWith(0, t.any(Number), t.any(String))

        t.is(spy.calls.any(), true)
        t.is(spy.calls.count(), 3)

        spy.calls.reset()

        t.is(spy.calls.any(), false)
        t.is(spy.calls.count(), 0)
    })


    t.it("Should be able to spy on some function", t => {
        var someInstance    = {
            counter     : 0,

            method      : function () { this.counter++ }
        }

        var spy = t.spyOn(someInstance, 'method')

        someInstance.method(1)
        someInstance.method('one', 'two')
        someInstance.method(3, 3, 3)

        t.expect(spy).toHaveBeenCalled()

        t.expect(spy).toHaveBeenCalled('>1')
        t.expect(spy).toHaveBeenCalled('<=3')

        t.expect(spy).toHaveBeenCalledWith(1)
        t.expect(spy).toHaveBeenCalledWith('one', 'two')
    });
});