AAPT2

First checking of AAPT2. The individual phases of AAPT2 work, but there
are some missing pieces.

For early testing we are missing:
- Need to properly mark file references and include them in package
- Need to package into zip

Final AAPT for apps we are missing:
- Need to crush PNGs
- Need to parse 9-patches
- Need to validate all of AndroidManifest.xml
- Need to write align method to align resource tables for splits.

Final AAPT for apps + system we are missing:
- Need to handle overlays
- Need to store comments for R file
- Need to handle --shared-lib (dynamic references too).

New AAPT features coming:
- Need to import compiled libraries
    - Name mangling
    - R file generation for library code

Change-Id: I95f8a63581b81a1f424ae6fb2c373c883b72c18d
diff --git a/tools/aapt2/StringPiece_test.cpp b/tools/aapt2/StringPiece_test.cpp
new file mode 100644
index 0000000..43f7a37
--- /dev/null
+++ b/tools/aapt2/StringPiece_test.cpp
@@ -0,0 +1,62 @@
+/*
+ * 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 <algorithm>
+#include <gtest/gtest.h>
+#include <string>
+#include <vector>
+
+#include "StringPiece.h"
+
+namespace aapt {
+
+TEST(StringPieceTest, CompareNonNullTerminatedPiece) {
+    StringPiece a("hello world", 5);
+    StringPiece b("hello moon", 5);
+    EXPECT_EQ(a, b);
+
+    StringPiece16 a16(u"hello world", 5);
+    StringPiece16 b16(u"hello moon", 5);
+    EXPECT_EQ(a16, b16);
+}
+
+TEST(StringPieceTest, PiecesHaveCorrectSortOrder) {
+    std::u16string testing(u"testing");
+    std::u16string banana(u"banana");
+    std::u16string car(u"car");
+
+    EXPECT_TRUE(StringPiece16(testing) > banana);
+    EXPECT_TRUE(StringPiece16(testing) > car);
+    EXPECT_TRUE(StringPiece16(banana) < testing);
+    EXPECT_TRUE(StringPiece16(banana) < car);
+    EXPECT_TRUE(StringPiece16(car) < testing);
+    EXPECT_TRUE(StringPiece16(car) > banana);
+}
+
+TEST(StringPieceTest, PiecesHaveCorrectSortOrderUtf8) {
+    std::string testing("testing");
+    std::string banana("banana");
+    std::string car("car");
+
+    EXPECT_TRUE(StringPiece(testing) > banana);
+    EXPECT_TRUE(StringPiece(testing) > car);
+    EXPECT_TRUE(StringPiece(banana) < testing);
+    EXPECT_TRUE(StringPiece(banana) < car);
+    EXPECT_TRUE(StringPiece(car) < testing);
+    EXPECT_TRUE(StringPiece(car) > banana);
+}
+
+} // namespace aapt