test-runner: run lint and small test adjustment

Author: JacopoPatroclo

test/parallel/test-runner-run-watch.mjs

@@ -256,10 +256,10 @@ describe('test runner watch mode', () => {
     });
     assert.notDeepStrictEqual(durations[0][1], durations[1][1]);
   });
-  
+
   it('should emits test:watch:restarted when file is updated', async () => {
     const testWatchRestarted = common.mustCall(1);
-    
+
     const controller = new AbortController();
     const stream = run({
       cwd: tmpdir.path,
@@ -270,26 +270,28 @@ describe('test runner watch mode', () => {
         testWatchRestarted();
         controller.abort();
       }
-    })
+    });
+
+    await once(stream, 'test:watch:drained');
 
     writeFileSync(join(tmpdir.path, 'test.js'), fixtureContent['test.js']);
-    
+
     // eslint-disable-next-line no-unused-vars
     for await (const _ of stream);
-  })
-  
+  });
+
   it('should not emit test:watch:restarted since watch mode is disabled', async () => {
     const stream = run({
       cwd: tmpdir.path,
       watch: false,
-    })
+    });
 
-    stream.on('test:watch:restarted', common.mustNotCall())
+    stream.on('test:watch:restarted', common.mustNotCall());
     writeFileSync(join(tmpdir.path, 'test.js'), fixtureContent['test.js']);
-    
+
     // eslint-disable-next-line no-unused-vars
     for await (const _ of stream);
-  })
+  });
 
   describe('test runner watch mode with different cwd', () => {
     it(