Jasmine array.length expect

Question

I'm just new to the jasmine js test framework and got some odd results today.

See the following code (search is a function that preforms an api request and returns a promise):

it('should be able to search', function() {
    search('string').done(function(result) {
        expect(result.length).toBeGreaterThan(1); //true
        console.log(result.lenght); // undefined
    });
});

The thing is that, due to some errors that I have to fix, the result from the promise is undefined, but the test is marked as Success. I find this misleading and if I din't investigate this deeply I would have believed that the test was a success while it clearly wasn't. Is this expected behaviour?

Answer 1

You have typo in console.log(result.lenght) please try this.

it('should be able to search', function() {
search('string').done(function(result) {
    expect(result.length).toBeGreaterThan(1); //true
    console.log(result.length); // undefined
});
});

Answer 2

For testing asynchronous functions, your tests need to be written slightly differently. From the latest Jasmine (2.0) documentation, asynchronous test are written as follows:

beforeEach(function(done) {
    setTimeout(function() {
        // do setup for spec here

        // then call done() in beforeEach() to start asynchronous test
        done();
    }, 1);
});

it('should be able to search', function(done) {
    search('string').done(function(result) {
        expect(result.length).toBeGreaterThan(1); //true

        // call done() in the spec when asynchronous test is complete
        done();
    });
});