diff --git a/packages/core/src/test/shared/fs/fs.test.ts b/packages/core/src/test/shared/fs/fs.test.ts
index 5fa4428559f..ddf62073193 100644
--- a/packages/core/src/test/shared/fs/fs.test.ts
+++ b/packages/core/src/test/shared/fs/fs.test.ts
@@ -404,8 +404,8 @@ describe('FileSystem', function () {
         })
     })
 
-    describe('rename()', async () => {
-        it('renames a file', async () => {
+    describe('rename()', function () {
+        it('renames a file', async function () {
             const oldPath = await testFolder.write('oldFile.txt', 'hello world')
             const newPath = path.join(path.dirname(oldPath), 'newFile.txt')
 
@@ -416,7 +416,7 @@ describe('FileSystem', function () {
             assert.deepStrictEqual(testutil.getMetrics('ide_fileSystem').length, 0)
         })
 
-        it('renames a folder', async () => {
+        it('renames a folder', async function () {
             const oldPath = await testFolder.mkdir('test')
             await fs.writeFile(path.join(oldPath, 'file.txt'), 'test text')
             const newPath = path.join(path.dirname(oldPath), 'newName')
@@ -428,7 +428,7 @@ describe('FileSystem', function () {
             assert(!existsSync(oldPath))
         })
 
-        it('overwrites if destination exists', async () => {
+        it('overwrites if destination exists', async function () {
             const oldPath = await testFolder.write('oldFile.txt', 'hello world')
             const newPath = await testFolder.write('newFile.txt', 'some content')
 
@@ -438,7 +438,7 @@ describe('FileSystem', function () {
             assert(!existsSync(oldPath))
         })
 
-        it('throws if source does not exist', async () => {
+        it('throws if source does not exist', async function () {
             const clock = testutil.installFakeClock()
             try {
                 const oldPath = testFolder.pathFrom('oldFile.txt')
@@ -459,21 +459,23 @@ describe('FileSystem', function () {
             }
         })
 
-        it('source file does not exist at first, but eventually appears', async () => {
-            const oldPath = testFolder.pathFrom('oldFile.txt')
-            const newPath = testFolder.pathFrom('newFile.txt')
+        for (const _ of Array.of({ length: 1000 }, (i: any) => i)) {
+            it('source file does not exist at first, but eventually appears', async function () {
+                const oldPath = testFolder.pathFrom('oldFile.txt')
+                const newPath = testFolder.pathFrom('newFile.txt')
 
-            const result = fs.rename(oldPath, newPath)
-            // this file is created after the first "exists" check fails, the following check should pass
-            void testutil.toFile('hello world', oldPath)
-            await result
+                const result = fs.rename(oldPath, newPath)
+                // this file is created after the first "exists" check fails, the following check should pass
+                void testutil.toFile('hello world', oldPath)
+                await result
 
-            testutil.assertTelemetry('ide_fileSystem', {
-                action: 'rename',
-                result: 'Succeeded',
-                reason: 'RenameRaceCondition',
+                testutil.assertTelemetry('ide_fileSystem', {
+                    action: 'rename',
+                    result: 'Succeeded',
+                    reason: 'RenameRaceCondition',
+                })
             })
-        })
+        }
     })
 
     describe('getUserHomeDir()', function () {