Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/5397#discussion_r166228917
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/rest/handler/job/JobVertexBackPressureHandlerTest.java
---
@@ -0,0 +1,149 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.runtime.rest.handler.job;
+
+import org.apache.flink.api.common.JobID;
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.jobgraph.JobVertexID;
+import org.apache.flink.runtime.rest.handler.HandlerRequest;
+import
org.apache.flink.runtime.rest.handler.legacy.backpressure.OperatorBackPressureStats;
+import
org.apache.flink.runtime.rest.handler.legacy.backpressure.OperatorBackPressureStatsResponse;
+import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
+import org.apache.flink.runtime.rest.messages.JobIDPathParameter;
+import org.apache.flink.runtime.rest.messages.JobVertexBackPressureHeaders;
+import org.apache.flink.runtime.rest.messages.JobVertexBackPressureInfo;
+import
org.apache.flink.runtime.rest.messages.JobVertexBackPressureInfo.VertexBackPressureStatus;
+import org.apache.flink.runtime.rest.messages.JobVertexIdPathParameter;
+import org.apache.flink.runtime.rest.messages.JobVertexMessageParameters;
+import org.apache.flink.runtime.webmonitor.TestingRestfulGateway;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.stream.Collectors;
+
+import static
org.apache.flink.runtime.rest.messages.JobVertexBackPressureInfo.VertexBackPressureLevel.HIGH;
+import static
org.apache.flink.runtime.rest.messages.JobVertexBackPressureInfo.VertexBackPressureLevel.LOW;
+import static
org.apache.flink.runtime.rest.messages.JobVertexBackPressureInfo.VertexBackPressureLevel.OK;
+import static org.hamcrest.Matchers.contains;
+import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Tests for {@link JobVertexBackPressureHandler}.
+ */
+public class JobVertexBackPressureHandlerTest {
--- End diff --
`extends TestLogger` is missing.
---
