From 672fc8362553b45cf90f22ccfff16239a00c3594 Mon Sep 17 00:00:00 2001
From: Antoine du Hamel <duhamelantoine1995@gmail.com>
Date: Tue, 19 Mar 2024 09:02:55 +0200
Subject: [PATCH] test: add test for using `--print` with promises
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PR-URL: https://github.com/nodejs/node/pull/52137
Reviewed-By: Vinícius Lourenço Claro Cardoso <contact@viniciusl.com.br>
Reviewed-By: Debadree Chatterjee <debadree333@gmail.com>
---
 test/parallel/test-cli-print-promise.mjs | 93 ++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 test/parallel/test-cli-print-promise.mjs

diff --git a/test/parallel/test-cli-print-promise.mjs b/test/parallel/test-cli-print-promise.mjs
new file mode 100644
index 00000000000000..3f95630693035e
--- /dev/null
+++ b/test/parallel/test-cli-print-promise.mjs
@@ -0,0 +1,93 @@
+import { spawnPromisified } from '../common/index.mjs';
+import assert from 'node:assert';
+import { execPath } from 'node:process';
+import { describe, it } from 'node:test';
+
+
+describe('--print with a promise', { concurrency: true }, () => {
+  it('should handle directly-fulfilled promises', async () => {
+    const result = await spawnPromisified(execPath, [
+      '--print',
+      'Promise.resolve(42)',
+    ]);
+
+    assert.deepStrictEqual(result, {
+      code: 0,
+      signal: null,
+      stderr: '',
+      stdout: 'Promise { 42 }\n',
+    });
+  });
+
+  it('should handle promises fulfilled after one tick', async () => {
+    const result = await spawnPromisified(execPath, [
+      '--print',
+      'Promise.resolve().then(()=>42)',
+    ]);
+
+    assert.deepStrictEqual(result, {
+      code: 0,
+      signal: null,
+      stderr: '',
+      stdout: 'Promise { <pending> }\n',
+    });
+  });
+
+  it('should handle promise that never settles', async () => {
+    const result = await spawnPromisified(execPath, [
+      '--print',
+      'new Promise(()=>{})',
+    ]);
+
+    assert.deepStrictEqual(result, {
+      code: 0,
+      signal: null,
+      stderr: '',
+      stdout: 'Promise { <pending> }\n',
+    });
+  });
+
+  it('should output something if process exits before promise settles', async () => {
+    const result = await spawnPromisified(execPath, [
+      '--print',
+      'setTimeout(process.exit,100, 0);timers.promises.setTimeout(200)',
+    ]);
+
+    assert.deepStrictEqual(result, {
+      code: 0,
+      signal: null,
+      stderr: '',
+      stdout: 'Promise { <pending> }\n',
+    });
+  });
+
+  it('should handle rejected promises', async () => {
+    const result = await spawnPromisified(execPath, [
+      '--unhandled-rejections=none',
+      '--print',
+      'Promise.reject(1)',
+    ]);
+
+    assert.deepStrictEqual(result, {
+      code: 0,
+      signal: null,
+      stderr: '',
+      stdout: 'Promise { <rejected> 1 }\n',
+    });
+  });
+
+  it('should handle promises that reject after one tick', async () => {
+    const result = await spawnPromisified(execPath, [
+      '--unhandled-rejections=none',
+      '--print',
+      'Promise.resolve().then(()=>Promise.reject(1))',
+    ]);
+
+    assert.deepStrictEqual(result, {
+      code: 0,
+      signal: null,
+      stderr: '',
+      stdout: 'Promise { <pending> }\n',
+    });
+  });
+});