How does Jasmine handle asynchronous performance testing?

How does Jasmine handle asynchronous performance testing?

Jasmine provides support for asynchronous testing through the use of done callbacks and promises. You can use these to ensure that your tests wait for asynchronous operations to complete before making assertions.

Can you give me an example of an async test in Jasmine?

Sure! Here's a simple example:

it('should fetch data asynchronously', function(done) {
  fetchData().then(function(data) {
    expect(data).toBeDefined();
    done();
  });
});

This test waits for fetchData to resolve before checking if the data is defined.

What are some common pitfalls when testing async code in Jasmine?

Common pitfalls include forgetting to call done() which can lead to tests hanging, or not handling promise rejections properly. Always ensure that your async tests are correctly set up to handle both success and failure cases.

How can I improve the performance of my async tests?

To improve performance, minimize the number of async calls, use spies to mock dependencies, and ensure that your tests are not dependent on external services.