From d73ab26e91e40fd858928bee95658fc60ce96994 Mon Sep 17 00:00:00 2001
From: "Kamat, Trivikram" <16024985+trivikr@users.noreply.github.com>
Date: Sun, 21 Jun 2026 16:08:53 -0700
Subject: [PATCH] test: fix flaky test-runner coverage threshold test

Reset process.exitCode before running the coverage threshold check.
This lets the test verify the exit code set by that run() call without
depending on process-global state from earlier coverage runs.

Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
---
 test/parallel/test-runner-run-coverage.mjs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/test/parallel/test-runner-run-coverage.mjs b/test/parallel/test-runner-run-coverage.mjs
index 89a9da2a179e44..5a70644a89d93c 100644
--- a/test/parallel/test-runner-run-coverage.mjs
+++ b/test/parallel/test-runner-run-coverage.mjs
@@ -154,10 +154,13 @@ describe('require(\'node:test\').run coverage settings', { concurrency: true },
       for await (const _ of stream);
     });
 
-    await it('should run with coverage and fail when below line threshold', async () => {
+    await it('should run with coverage and fail when below line threshold', async (t) => {
       const thresholdErrors = [];
       const originalExitCode = process.exitCode;
-      assert.notStrictEqual(originalExitCode, 1);
+      t.after(() => {
+        process.exitCode = originalExitCode;
+      });
+      process.exitCode = undefined;
       const stream = run({
         files,
         coverage: true,
@@ -178,7 +181,6 @@ describe('require(\'node:test\').run coverage settings', { concurrency: true },
       for await (const _ of stream);
       assert.deepStrictEqual(thresholdErrors.sort(), ['branch', 'function', 'line']);
       assert.strictEqual(process.exitCode, 1);
-      process.exitCode = originalExitCode;
     });
   });
 });