1 files changed, 48 insertions, 0 deletions
diff --git a/tools/ahat/test/InstanceUtilsTest.java b/tools/ahat/test/InstanceUtilsTest.java
new file mode 100644
index 0000000000..7613df4994
--- /dev/null
+++ b/tools/ahat/test/InstanceUtilsTest.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2015 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.android.ahat;
+
+import com.android.tools.perflib.heap.Instance;
+import java.io.IOException;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import org.junit.Test;
+
+public class InstanceUtilsTest {
+  @Test
+  public void basicString() throws IOException {
+    TestDump dump = TestDump.getTestDump();
+    Instance str = (Instance)dump.getDumpedThing("basicString");
+    assertEquals("hello, world", InstanceUtils.asString(str));
+  }
+
+  @Test
+  public void nullString() throws IOException {
+    TestDump dump = TestDump.getTestDump();
+    Instance obj = (Instance)dump.getDumpedThing("nullString");
+    assertNull(InstanceUtils.asString(obj));
+  }
+
+  @Test
+  public void notString() throws IOException {
+    TestDump dump = TestDump.getTestDump();
+    Instance obj = (Instance)dump.getDumpedThing("anObject");
+    assertNotNull(obj);
+    assertNull(InstanceUtils.asString(obj));
+  }
+}