test: fix watch mode test flake

PR-URL: #44739
Backport-PR-URL: #44976
Fixes: #44735
Reviewed-By: Erick Wendel <[email protected]>
Reviewed-By: Rafael Gonzaga <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>

Author: MoLow

test/sequential/test-watch-mode.mjs

@@ -94,8 +94,10 @@ describe('watch mode', { concurrency: true, timeout: 60_0000 }, () => {
     const file = fixtures.path('watch-mode/failing.js');
     const { stderr, stdout } = await spawnWithRestarts({ file });
 
+    // Use match first to pretty print diff on failure
     assert.match(stderr, /Error: fails\r?\n/);
-    assert.strictEqual(stderr.match(/Error: fails\r?\n/g).length, 2);
+    // Test that failures happen once per restart
+    assert(stderr.match(/Error: fails\r?\n/g).length >= 2);
     assertRestartedCorrectly({
       stdout,
       messages: { completed: `Failed running ${inspect(file)}`, restarted: `Restarting ${inspect(file)}` },
@@ -206,7 +208,9 @@ describe('watch mode', { concurrency: true, timeout: 60_0000 }, () => {
     });
   });
 
-  it('should not load --import modules in main process', async () => {
+  it('should not load --import modules in main process', {
+    skip: 'enable once --import is backported',
+  }, async () => {
     const file = createTmpFile('');
     const imported = fixtures.fileURL('watch-mode/process_exit.js');
     const args = ['--import', imported, file];