1 files changed, 82 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/lib/util/SingleLineFormatterTest.java b/src/test/java/com/google/devtools/build/lib/util/SingleLineFormatterTest.java
new file mode 100644
index 0000000000..3c9f38aca9
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+++ b/src/test/java/com/google/devtools/build/lib/util/SingleLineFormatterTest.java
@@ -0,0 +1,82 @@
+// Copyright 2017 The Bazel Authors. All rights reserved.
+//
+// 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.devtools.build.lib.util;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import java.util.logging.Level;
+import java.util.logging.LogRecord;
+import org.joda.time.DateTime;
+import org.joda.time.DateTimeZone;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+public class SingleLineFormatterTest {
+
+  private static final DateTime TIMESTAMP =
+      new DateTime(2017, 04, 01, 17, 03, 43, 142, DateTimeZone.UTC);
+
+  @Test
+  public void testFormat() {
+    LogRecord logRecord = createLogRecord(Level.SEVERE, TIMESTAMP);
+    assertThat(new SingleLineFormatter().format(logRecord))
+        .isEqualTo("170401 17:03:43.142:X 543 [SomeSourceClass.aSourceMethod] some message\n");
+  }
+
+  @Test
+  public void testLevel() {
+    LogRecord logRecord = createLogRecord(Level.WARNING, TIMESTAMP);
+    String formatted = new SingleLineFormatter().format(logRecord);
+    assertThat(formatted).contains("W");
+    assertThat(formatted).doesNotContain("X");
+  }
+
+  @Test
+  public void testTime() {
+    LogRecord logRecord =
+        createLogRecord(
+            Level.SEVERE, new DateTime(1999, 11, 30, 03, 04, 05, 722, DateTimeZone.UTC));
+    assertThat(new SingleLineFormatter().format(logRecord)).contains("991130 03:04:05.722");
+  }
+
+  @Test
+  public void testStackTrace() {
+    LogRecord logRecord = createLogRecord(
+        Level.SEVERE, TIMESTAMP, new RuntimeException("something wrong"));
+    assertThat(new SingleLineFormatter().format(logRecord))
+        .startsWith(
+            "170401 17:03:43.142:XT 543 [SomeSourceClass.aSourceMethod] some message\n"
+            + "java.lang.RuntimeException: something wrong\n"
+            + "\tat com.google.devtools.build.lib.util.SingleLineFormatterTest.testStackTrace");
+  }
+
+  private static LogRecord createLogRecord(Level level, DateTime dateTime) {
+    return createLogRecord(level, dateTime, null);
+  }
+
+  private static LogRecord createLogRecord(
+      Level level, DateTime dateTime, RuntimeException thrown) {
+    LogRecord record = new LogRecord(level, "some message");
+    record.setMillis(dateTime.getMillis());
+    record.setSourceClassName("SomeSourceClass");
+    record.setSourceMethodName("aSourceMethod");
+    record.setThreadID(543);
+    if (thrown != null) {
+      record.setThrown(thrown);
+    }
+    return record;
+  }
+}