Clean up libcutils/libutils tests.

Move tests in the same directory as the corresponding code, so it's
easier to see what is/isn't tested.

Fix naming of libcutils_tests (plural) to match the singular that's more
common (even though the plural makes more sense to me).

Add these two to system/core/'s TEST_MAPPING.

Remove obsolete AndroidTest.xml.

Fix a flaky (timing-dependent) libcutils test.

Test: ran tests
Change-Id: I7e0a31ff45c8a152562bf66fc97161594249366e

1 files changed, 32 insertions, 0 deletions

diff --git a/libutils/Mutex_test.cpp b/libutils/Mutex_test.cpp
new file mode 100644
index 000000000..8a1805f51
--- /dev/null
+++ b/libutils/Mutex_test.cpp
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include <utils/Mutex.h>
+
+#include <gtest/gtest.h>
+
+static android::Mutex mLock;
+static int i GUARDED_BY(mLock);
+
+void modifyLockedVariable() REQUIRES(mLock) {
+    i = 1;
+}
+
+TEST(Mutex, compile) {
+    android::Mutex::Autolock _l(mLock);
+    i = 0;
+    modifyLockedVariable();
+}
\ No newline at end of file