Why has Jasmine decided not to wait for my promises to finish?

Utilizing the FileSystem API to generate a directory with 2 entries for a test, I am facing an issue where Jasmine does not wait for the promise to resolve before executing the test, resulting in failure. Despite using the async wrapper, the problem persists.

Any insights on why this is happening?

describe('traverseDirectory() method', () => {

let directoryToTraverse;
let entries;

beforeEach(async(() => {
    // Test setup logic

    });

it('should run', async(() => {
    // Test execution logic
}));

});

Answer №1

Check out this helpful tutorial on testing Angular asynchronously

In order to ensure your tests run smoothly, consider using fixture.whenStable. However, keep in mind that the placement of the expect statement is crucial due to the asynchronous nature of promises.

it('should execute successfully', async(() => {

  console.log('Executing the test');
  service.traverseDirectory(directoryToTraverse).then(res => {
    entries = res;
    console.log(entries); // confirm visibility of this line
    expect(directoryToTraverse).toEqual(entries);
  });
}));

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