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test_runner: triggered mocked setInterval stops processing of other timers that are due #50382

@mika-fischer

Description

@mika-fischer

Version

main

Platform

Linux s7 5.15.0-69-generic #76-Ubuntu SMP Fri Mar 17 17:19:29 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Subsystem

test

What steps will reproduce the bug?

Because of an incorrect early return here, when a mocked setInterval is triggered, processing of timers stops, even if there are more timers queued, that are already due.

Pull request incoming.

`test.skip("setInterval stops processing of timers", async (t) => {
  t.mock.timers.enable({ apis: ["setInterval", "setTimeout"] });
  const f1 = t.mock.fn();
  const f2 = t.mock.fn();

  setInterval(f1, 1000);
  setTimeout(f2, 1001);

  assert.strictEqual(f1.mock.callCount(), 0);
  assert.strictEqual(f2.mock.callCount(), 0);

  t.mock.timers.tick(1001);

  assert.strictEqual(f1.mock.callCount(), 1);
  assert.strictEqual(f2.mock.callCount(), 1);
});

fails with:

❯ ~/src/libs/node/node index.mjs
✖ setInterval stops processing of timers (2.266168ms)
  AssertionError [ERR_ASSERTION]: Expected values to be strictly equal:
  
  0 !== 1
  
      at TestContext.<anonymous> (file:///home/mfischer/src/tests/node-mock-timers/index.mjs:89:10)
      at Test.runInAsyncScope (node:async_hooks:206:9)
      at Test.run (node:internal/test_runner/test:631:25)
      at Test.processPendingSubtests (node:internal/test_runner/test:374:18)
      at Test.postRun (node:internal/test_runner/test:715:19)
      at Test.run (node:internal/test_runner/test:673:12)
      at async Test.processPendingSubtests (node:internal/test_runner/test:374:7) {
    generatedMessage: true,
    code: 'ERR_ASSERTION',
    actual: 0,
    expected: 1,
    operator: 'strictEqual'
  }

How often does it reproduce? Is there a required condition?

Always

What is the expected behavior? Why is that the expected behavior?

All timers that are due should be processed

What do you see instead?

Timers that are due are not triggered

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