test_runner execute tests twice on v21

[PierreDemailly]

Version

21.2.0

Platform

Microsoft Windows NT 10.0.19045.0 x64

Subsystem

test_runner

What steps will reproduce the bug?

Create a /test/foo.test.js file:

import assert from "node:assert";
import { describe, it } from "node:test";

describe("A", () => {
  it("A1", () => {
    assert.strictEqual(1, 1);
  });

  it("A2", () => {
    assert.strictEqual(1, 1);
  });
});

describe("B", () => {
  it("B1", () => {
    assert.strictEqual(1, 1);
  });

  it("B2", () => {
    assert.strictEqual(1, 1);
  });
});

Run node --test

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

Always.

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

I expect each suite to be executed one time.

What do you see instead?

Each suite is execute twice.

Additional information

I wondered if it was related to number of describe, i've tried with this code:

describe("A", () => {
  it("A1", () => {
    assert.strictEqual(1, 1);
  });

  it("A2", () => {
    assert.strictEqual(1, 1);
  });
});

describe("B", () => {
  it("B1", () => {
    assert.strictEqual(1, 1);
  });

  it("B2", () => {
    assert.strictEqual(1, 1);
  });
});

describe("C", () => {
  it("C1", () => {
    assert.strictEqual(1, 1);
  });

  it("C2", () => {
    assert.strictEqual(1, 1);
  });
});

It's still execute each tests twice.

[meyfa]

Sounds like a duplicate of #50875, which has been fixed and should be released soon.

[PierreDemailly]

Alright, thanks