Troubleshooting Jasmine Async Timeout Errors and Solutions

Error: Timeout - Async function did not complete within 5000ms (set by jasmine.DEFAULT_TIMEOUT_INTERVAL)

The error message you're seeing indicates that an asynchronous function in your Jasmine test suite did not complete within the default timeout interval of 5000 milliseconds (5 seconds). This can happen for several reasons, such as network delays, long-running operations, or even a bug in the code.

Here are some steps you can take to troubleshoot and resolve this issue:

1. Increase the Timeout Interval

If the operation is expected to take longer than 5 seconds, you can increase the timeout interval. You can do this by setting jasmine.DEFAULT_TIMEOUT_INTERVAL to a higher value in your test file.

jasmine.DEFAULT_TIMEOUT_INTERVAL = 10000; // 10 seconds

2. Optimize the Asynchronous Operation

If possible, try to optimize the asynchronous operation to complete more quickly. This might involve improving the performance of the code being tested or using more efficient algorithms.

3. Ensure Proper Handling of Promises

Make sure that your asynchronous function is properly returning a promise and that the promise is being resolved or rejected correctly.

4. Use done Callback for Asynchronous Code

If you are using Jasmine's done callback for asynchronous tests, make sure you call done() when the asynchronous operation completes.

it('should complete async operation', function(done) {
  asyncFunction().then(function(result) {
    expect(result).toBe(expectedValue);
    done();
  }).catch(function(error) {
    done.fail(error);
  });
});

5. Check for Infinite Loops or Deadlocks

Ensure that there are no infinite loops or deadlocks in your asynchronous code that could be causing it to hang indefinitely.

6. Mock Long-Running Operations

If the asynchronous operation involves network requests or other long-running tasks, consider mocking these operations in your tests to make them complete more quickly.

Example of Increasing Timeout Interval

Here's an example of how you can increase the timeout interval for a specific test:

describe('Async operation', function() {
  it('should complete within 10 seconds', function(done) {
    jasmine.DEFAULT_TIMEOUT_INTERVAL = 10000; // 10 seconds

    asyncFunction().then(function(result) {
      expect(result).toBe(expectedValue);
      done();
    }).catch(function(error) {
      done.fail(error);
    });
  });
});

Example of Using done Callback

Here's an example of using the done callback correctly:

describe('Async operation', function() {
  it('should complete async operation', function(done) {
    asyncFunction().then(function(result) {
      expect(result).toBe(expectedValue);
      done();
    }).catch(function(error) {
      done.fail(error);
    });
  });
});

By following these steps, you should be able to identify the cause of the timeout and take appropriate action to resolve it.