Question

97

Reset call on Jasmine spy does not return

rated 0 times [ 98] [ 1] / answers: 1 / hits: 24816 / 9 Years ago, tue, july 21, 2015, 12:00:00

I'm using a Jasmine (2.2.0) spy to see if a certain callback is called.

Test code:

it('tests', function(done) {

  var spy = jasmine.createSpy('mySpy');

  objectUnderTest.someFunction(spy).then(function() {

    expect(spy).toHaveBeenCalled();

    done();

  });

});

This works as expected. But now, I'm adding a second level:

it('tests deeper', function(done) {

  var spy = jasmine.createSpy('mySpy');

  objectUnderTest.someFunction(spy).then(function() {

    expect(spy).toHaveBeenCalled();

    spy.reset();

    return objectUnderTest.someFunction(spy);

  }).then(function() {

    expect(spy.toHaveBeenCalled());

    expect(spy.callCount).toBe(1);

    done();

  });

});

This test never returns, because apparently the done callback is never called. If I remove the line spy.reset(), the test does finish, but obviously fails on the last expectation. However, the callCount field seems to be undefined, rather than 2.

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tiffany

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1 Year ago

answered 9 Years ago daja · Accepted Answer

The syntax for Jasmine 2 is different than 1.3 with respect to spy functions.
See Jasmine docs here.

Specifically you reset a spy with spy.calls.reset();

This is how the test should look like:

// Source

var objectUnderTest = {

    someFunction: function (cb) {

        var promise = new Promise(function (resolve, reject) {

            if (true) {

                cb();

                resolve();

            } else {

                reject(new Error(something bad happened));

            }

        });

        return promise;

    }

}



// Test

describe('foo', function () {

    it('tests', function (done) {

        var spy = jasmine.createSpy('mySpy');

        objectUnderTest.someFunction(spy).then(function () {

            expect(spy).toHaveBeenCalled();

            done();

        });

    });

    it('tests deeper', function (done) {

        var spy = jasmine.createSpy('mySpy');

        objectUnderTest.someFunction(spy).then(function () {

            expect(spy).toHaveBeenCalled();

            spy.calls.reset();

            return objectUnderTest.someFunction(spy);

        }).then(function () {

            expect(spy).toHaveBeenCalled();

            expect(spy.calls.count()).toBe(1);

            done();

        });

    });

});

See fiddle here