1 files changed, 71 insertions, 0 deletions
diff --git a/javatests/com/google/gerrit/server/logging/LoggingContextAwareExecutorServiceTest.java b/javatests/com/google/gerrit/server/logging/LoggingContextAwareExecutorServiceTest.java
new file mode 100644
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+++ b/javatests/com/google/gerrit/server/logging/LoggingContextAwareExecutorServiceTest.java
@@ -0,0 +1,71 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed 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 com.google.gerrit.server.logging;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.common.truth.Expect;
+import java.util.SortedMap;
+import java.util.SortedSet;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import org.junit.Rule;
+import org.junit.Test;
+
+public class LoggingContextAwareExecutorServiceTest {
+  @Rule public final Expect expect = Expect.create();
+
+  @Test
+  public void loggingContextPropagationToBackgroundThread() throws Exception {
+    assertThat(LoggingContext.getInstance().getTags().isEmpty()).isTrue();
+    assertForceLogging(false);
+    try (TraceContext traceContext = TraceContext.open().forceLogging().addTag("foo", "bar")) {
+      SortedMap<String, SortedSet<Object>> tagMap = LoggingContext.getInstance().getTags().asMap();
+      assertThat(tagMap.keySet()).containsExactly("foo");
+      assertThat(tagMap.get("foo")).containsExactly("bar");
+      assertForceLogging(true);
+
+      ExecutorService executor =
+          new LoggingContextAwareExecutorService(Executors.newFixedThreadPool(1));
+      executor
+          .submit(
+              () -> {
+                // Verify that the tags and force logging flag have been propagated to the new
+                // thread.
+                SortedMap<String, SortedSet<Object>> threadTagMap =
+                    LoggingContext.getInstance().getTags().asMap();
+                expect.that(threadTagMap.keySet()).containsExactly("foo");
+                expect.that(threadTagMap.get("foo")).containsExactly("bar");
+                expect
+                    .that(LoggingContext.getInstance().shouldForceLogging(null, null, false))
+                    .isTrue();
+              })
+          .get();
+
+      // Verify that tags and force logging flag in the outer thread are still set.
+      tagMap = LoggingContext.getInstance().getTags().asMap();
+      assertThat(tagMap.keySet()).containsExactly("foo");
+      assertThat(tagMap.get("foo")).containsExactly("bar");
+      assertForceLogging(true);
+    }
+    assertThat(LoggingContext.getInstance().getTags().isEmpty()).isTrue();
+    assertForceLogging(false);
+  }
+
+  private void assertForceLogging(boolean expected) {
+    assertThat(LoggingContext.getInstance().shouldForceLogging(null, null, false))
+        .isEqualTo(expected);
+  }
+}