Add unit test descriptions

src/actions-util.test.ts

@@ -763,3 +763,5 @@ test("sanitizeArifactName", (t) => {
     "manyinvalid"
   );
 });
+
+// TODO(angelapwen): Test uploadDebugArtifacts if toUpload is empty

src/analyze-action-cleanup.test.ts

@@ -0,0 +1 @@
+// TODO(angelapwen): Test run() here

src/init-action-cleanup.test.ts

@@ -0,0 +1 @@
+// TODO(angelapwen): Test run() here.

src/util.test.ts

@@ -439,3 +439,15 @@ for (const [
     isActionsStub.restore();
   });
 }
+
+// TODO(angelapwen): Test doesDirectoryExist() returns true if directory
+
+// TODO(angelapwen): Test doesDirectoryExist() returns false if file
+
+// TODO(angelapwen): Test doesDirectoryExist() returns false if no file of this type exists
+
+// TODO(angelapwen): Test listFolder() returns files in directory
+
+// TODO(angelapwen): Test listFolder() returns empty if not a directory
+
+// TODO(angelapwen): Test doesDirectoryExist() returns empty if directory is empty