Add functions to provide target sdk version

Bug: http://b/21364029
Change-Id: I8648d1bff6c8fd6e7cd12da7f128e048b9f2829a
(cherry picked from commit 79fd668bb4ddb22432eeda2ebd8d10359013d9a8)

2 files changed, 35 insertions, 0 deletions

diff --git a/tests/Android.mk b/tests/Android.mk
index 14f0d32..0f3454c 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -49,6 +49,9 @@ endif
 test_cppflags = \
     -std=gnu++11 \
 
+libBionicStandardTests_src_files_target := \
+    libdl_test.cpp \
+
 libBionicStandardTests_src_files := \
     arpa_inet_test.cpp \
     buffer_tests.cpp \
diff --git a/tests/libdl_test.cpp b/tests/libdl_test.cpp
new file mode 100644
index 0000000..9aab87b
--- /dev/null
+++ b/tests/libdl_test.cpp
@@ -0,0 +1,32 @@
+/*
+ * 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.
+ */
+
+#include <gtest/gtest.h>
+
+extern "C" uint32_t android_get_application_target_sdk_version();
+extern "C" void android_set_application_target_sdk_version(uint32_t target);
+
+TEST(libdl, application_sdk_versions_smoke) {
+  // Check initial values
+  ASSERT_EQ(0U, android_get_application_target_sdk_version());
+
+  android_set_application_target_sdk_version(20U);
+  ASSERT_EQ(20U, android_get_application_target_sdk_version());
+
+  android_set_application_target_sdk_version(22U);
+  ASSERT_EQ(22U, android_get_application_target_sdk_version());
+}
+