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
(cherry picked from commit 210730e5627e52b6f56a1765e242913908af72bd)

1 files changed, 48 insertions, 0 deletions

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 00000000000..27b60210553
--- /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();
+    }
+}