AAPT2: Implement density stripping and initial Split support

When a preferred density is supplied, the closest matching densities
will be selected, the rest stripped from the APK.

Split support will be enabled in a later CL. Command line support is still
needed, but the foundation is ready.

Bug:25958912
Change-Id: I56d599806b4ec4ffa24e17aad48d47130ca05c08

1 files changed, 38 insertions, 0 deletions

diff --git a/tools/aapt2/SdkConstants_test.cpp b/tools/aapt2/SdkConstants_test.cpp
new file mode 100644
index 000000000000..e81f412dda15
--- /dev/null
+++ b/tools/aapt2/SdkConstants_test.cpp
@@ -0,0 +1,38 @@
+/*
+ * 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 "SdkConstants.h"
+
+#include <gtest/gtest.h>
+
+namespace aapt {
+
+TEST(SdkConstantsTest, FirstAttributeIsSdk1) {
+    EXPECT_EQ(1u, findAttributeSdkLevel(ResourceId(0x01010000)));
+}
+
+TEST(SdkConstantsTest, AllAttributesAfterLollipopAreLollipopMR1) {
+    EXPECT_EQ(SDK_LOLLIPOP, findAttributeSdkLevel(ResourceId(0x010103f7)));
+    EXPECT_EQ(SDK_LOLLIPOP, findAttributeSdkLevel(ResourceId(0x010104ce)));
+
+    EXPECT_EQ(SDK_LOLLIPOP_MR1, findAttributeSdkLevel(ResourceId(0x010104cf)));
+    EXPECT_EQ(SDK_LOLLIPOP_MR1, findAttributeSdkLevel(ResourceId(0x010104d8)));
+
+    EXPECT_EQ(SDK_LOLLIPOP_MR1, findAttributeSdkLevel(ResourceId(0x010104d9)));
+    EXPECT_EQ(SDK_LOLLIPOP_MR1, findAttributeSdkLevel(ResourceId(0x0101ffff)));
+}
+
+} // namespace aapt