test(middleware-sdk-s3): increase randomness of e2e test (#7463)

Author: kuhe

packages/middleware-sdk-s3/src/s3-expires-middleware.e2e.spec.ts

@@ -18,17 +18,24 @@ describe("S3 Expires e2e test", () => {
   let callerID = null as unknown as GetCallerIdentityCommandOutput;
   let Bucket: string;
 
-  // random element limited to 2 letters to avoid concurrent IO, and
-  // to limit bucket count to 676 if there is failure to delete them.
-  const alphabet = "abcdefghijklmnopqrstuvwxyz";
-  const randId = alphabet[(Math.random() * alphabet.length) | 0] + alphabet[(Math.random() * alphabet.length) | 0];
+  const alphabet = "abcdefghijklmnopqrstuvwxyz0123456789";
+  const char = () => alphabet[(Math.random() * alphabet.length) | 0];
+  const randId = char() + char() + char() + char() + (Date.now() % 1000);
 
   beforeAll(async () => {
     callerID = await stsClient.getCallerIdentity({});
-    Bucket = `${callerID.Account}-${randId}-s3-expires`;
-    await s3.createBucket({
-      Bucket,
-    });
+    Bucket = `${callerID.Account}-s3-expires-${randId}`;
+
+    await s3
+      .createBucket({
+        Bucket,
+      })
+      .catch((e) => {
+        if (e.name === "BucketAlreadyOwnedByYou") {
+          return;
+        }
+        throw e;
+      });
   });
 
   afterAll(async () => {