1 files changed, 84 insertions, 0 deletions
diff --git a/chromium/base/android/junit/src/org/chromium/base/LogTest.java b/chromium/base/android/junit/src/org/chromium/base/LogTest.java
new file mode 100644
index 00000000000..ee686635fe4
--- /dev/null
+++ b/chromium/base/android/junit/src/org/chromium/base/LogTest.java
@@ -0,0 +1,84 @@
+// Copyright 2015 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.base;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+import org.robolectric.shadows.ShadowLog;
+
+import org.chromium.base.test.BaseRobolectricTestRunner;
+
+import java.util.List;
+
+/** Unit tests for {@link Log}. */
+@RunWith(BaseRobolectricTestRunner.class)
+@Config(manifest = Config.NONE)
+public class LogTest {
+    /** Tests that the computed call origin is the correct one. */
+    @Test
+    public void callOriginTest() {
+        Log.d("Foo", "Bar");
+
+        List<ShadowLog.LogItem> logs = ShadowLog.getLogs();
+
+        assertTrue("The origin of the log message (" + logs.get(logs.size() - 1).msg
+                        + ") looks wrong.",
+                logs.get(logs.size() - 1).msg.matches("\\[LogTest.java:\\d+\\].*"));
+    }
+
+    @Test
+    public void normalizeTagTest() {
+        assertEquals("cr_foo", Log.normalizeTag("foo"));
+    }
+
+    /** Tests that exceptions provided to the log functions are properly recognized and printed. */
+    @Test
+    public void exceptionLoggingTest() {
+        Throwable t = new Throwable() {
+            @Override
+            public String toString() {
+                return "MyThrowable";
+            }
+        };
+
+        Throwable t2 = new Throwable() {
+            @Override
+            public String toString() {
+                return "MyOtherThrowable";
+            }
+        };
+
+        List<ShadowLog.LogItem> logs;
+
+        // The throwable gets printed out
+        Log.i("Foo", "Bar", t);
+        logs = ShadowLog.getLogs();
+        assertEquals(t, logs.get(logs.size() - 1).throwable);
+        assertEquals("Bar", logs.get(logs.size() - 1).msg);
+
+        // messageTemplate include %xx, print out normally.
+        Log.i("Foo", "search?q=%E6%B5%8B%E8%AF%95", t);
+        logs = ShadowLog.getLogs();
+        assertEquals(t, logs.get(logs.size() - 1).throwable);
+        assertEquals("search?q=%E6%B5%8B%E8%AF%95", logs.get(logs.size() - 1).msg);
+
+        // Non throwable are properly identified
+        Log.i("Foo", "Bar %s", t, "Baz");
+        logs = ShadowLog.getLogs();
+        assertNull(logs.get(logs.size() - 1).throwable);
+        assertEquals("Bar MyThrowable", logs.get(logs.size() - 1).msg);
+
+        // The last throwable is the one used that is going to be printed out
+        Log.i("Foo", "Bar %s", t, t2);
+        logs = ShadowLog.getLogs();
+        assertEquals(t2, logs.get(logs.size() - 1).throwable);
+        assertEquals("Bar MyThrowable", logs.get(logs.size() - 1).msg);
+    }
+}