update prose test num.2

Author: tadjik1

test/integration/client-backpressure/client-backpressure.prose.test.ts

@@ -66,19 +66,25 @@ describe('Client Backpressure (Prose)', function () {
     }
   );
 
-  it('Test 2: Token Bucket capacity is Enforced', async () => {
-    // 1-2. Assert that the client's retry token bucket is at full capacity and that the capacity
-    // is DEFAULT_RETRY_TOKEN_CAPACITY.
+  it('Test 2: Token Bucket capacity is Enforced', async function () {
+    // 1. Let client be a MongoClient with adaptiveRetries=True.
+    const client = this.configuration.newClient({
+      adaptiveRetries: true
+    });
+    await client.connect();
+
+    // 2. Assert that the client's retry token bucket is at full capacity and that the capacity is DEFAULT_RETRY_TOKEN_CAPACITY.
     const tokenBucket = client.topology.tokenBucket;
     expect(tokenBucket).to.have.property('budget', INITIAL_TOKEN_BUCKET_SIZE);
     expect(tokenBucket).to.have.property('capacity', INITIAL_TOKEN_BUCKET_SIZE);
 
-    // 3. Execute a successful ping command.
+    // 3. Using client, execute a successful ping command.
     await client.db('admin').command({ ping: 1 });
 
-    // 4. Assert that the successful command did not increase the number of tokens in the bucket
-    // above DEFAULT_RETRY_TOKEN_CAPACITY.
+    // 4. Assert that the successful command did not increase the number of tokens in the bucket above DEFAULT_RETRY_TOKEN_CAPACITY.
     expect(tokenBucket).to.have.property('budget').that.is.at.most(INITIAL_TOKEN_BUCKET_SIZE);
+
+    await client.close();
   });
 
   it(