Add CTS test for AssetManager double destroy

If an AssetManager is closed and then finalized before assets that
were opened with that AssetManager were finalized, nativeDestroy
will be ran twice.

Test that the fix the double destroy issue works as expected.

Bug: 144028297
Test atest android.security.cts.AssetManagerTest

Change-Id: Iecbb0cc60d1e2f93d7ec1fa263be2910de1a78a8
diff --git a/tests/tests/security/src/android/security/cts/AssetManagerTest.java b/tests/tests/security/src/android/security/cts/AssetManagerTest.java
new file mode 100644
index 0000000..27b6021
--- /dev/null
+++ b/tests/tests/security/src/android/security/cts/AssetManagerTest.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2020 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 android.security.cts;
+
+import android.content.res.AssetManager;
+import android.content.res.XmlResourceParser;
+import android.platform.test.annotations.SecurityTest;
+
+import com.android.compatibility.common.util.CtsAndroidTestCase;
+
+@SecurityTest
+public class AssetManagerTest extends CtsAndroidTestCase {
+
+    // b/144028297
+    @SecurityTest(minPatchLevel = "2020-04")
+    public void testCloseThenFinalize() throws Exception {
+        final XmlResourceParser[] parser = {null};
+        final AssetManager[] assetManager = {AssetManager.class.newInstance()};
+        parser[0] = assetManager[0].openXmlResourceParser(
+                "res/xml/audio_assets.xml");
+        assetManager[0].close();
+        assetManager[0] = null;
+
+        Runtime.getRuntime().gc();
+        Runtime.getRuntime().gc();
+        Runtime.getRuntime().runFinalization();
+
+        parser[0] = null;
+
+        Runtime.getRuntime().gc();
+        Runtime.getRuntime().gc();
+        Runtime.getRuntime().runFinalization();
+    }
+}