Merge "Fix some flaky tests."

1 files changed, 42 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/compat/LooperCompatUtils.java b/java/src/com/android/inputmethod/compat/LooperCompatUtils.java
new file mode 100644
index 000000000..d647dbbd3
--- /dev/null
+++ b/java/src/com/android/inputmethod/compat/LooperCompatUtils.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2014 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.inputmethod.compat;
+
+import android.os.Looper;
+
+import java.lang.reflect.Method;
+
+/**
+ * Helper to call Looper#quitSafely, which was introduced in API
+ * level 18 (Build.VERSION_CODES.JELLY_BEAN_MR2).
+ *
+ * In unit tests, we create lots of instances of LatinIME, which means we need to clean up
+ * some Loopers lest we leak file descriptors. In normal use on a device though, this is never
+ * necessary (although it does not hurt).
+ */
+public final class LooperCompatUtils {
+    private static final Method METHOD_quitSafely = CompatUtils.getMethod(
+            Looper.class, "quitSafely");
+
+    public static void quitSafely(final Looper looper) {
+        if (null != METHOD_quitSafely) {
+            CompatUtils.invoke(looper, null /* default return value */, METHOD_quitSafely);
+        } else {
+            looper.quit();
+        }
+    }
+}