assert.throws Doesn't Count Towards Assertions

Describe your problem and how to reproduce it: I was working on the Sudoku Solver project and ran into an issue with my tests failing despite my unit tests passing locally.

Test case:

test('Invalid puzzle strings fail the solver', (done) => {
  const puzzleString = '115..2.84..63.12.7.2..5.....9..1....8.2.3674.3.7.2..9.47...8..1..16....926914.37.';
  assert.throws(() => solver.solve(puzzleString), 'Puzzle cannot be solved');
  done();
});  

Unit tests:

Network tab:

I can see in the tests for the project, it dictates all tests must have at least one assertion. I do have an assertion though, but it’s not being returned.

Add a Link to the page with the problem: https://www.freecodecamp.org/learn/quality-assurance/quality-assurance-projects/sudoku-solver

Tell us about your browser and operating system:

• Browser Name: Firefox
• Browser Version: 86.0 (64-bit)
• Operating System: Ubuntu 20.04.2 LTS x86_64

[SethFalco]

We could probably close this issue since you have already finished the task.

No, because this is still a valid issue. I could work around it for now, however others will still encounter it when they shouldn’t, and it still needs to be fixed.

[SethFalco]

Have you tried doing something like this?

expect(() => solver.solve(puzzleString)).toThrow('Puzzle cannot be solved');

I’ve already passed the task so I don’t need to work around it anymore. However, I did try expect(() => solver.solve(puzzleString)).throw('Puzzle cannot be solved'); anyway.

This did not fix the issue. I’m betting it’s probably something to do with the pattern not catching the () => syntax as a valid assertion, but haven’t looked into it much yet.