libandroidfw: move ConfigDescription from aapt2 to libandroidfw

This is to allow idmap2 to access ConfigDescription.

Test: libandroidfw_tests
Test: aapt2_tests
Change-Id: I54210bbbd8dad5903cb7100807df977efa394ad5
diff --git a/libs/androidfw/tests/Locale_test.cpp b/libs/androidfw/tests/Locale_test.cpp
new file mode 100644
index 0000000..6b2ef5f
--- /dev/null
+++ b/libs/androidfw/tests/Locale_test.cpp
@@ -0,0 +1,95 @@
+/*
+ * 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 "androidfw/Locale.h"
+#include "androidfw/Util.h"
+
+#include <string>
+
+#include "gtest/gtest.h"
+
+namespace android {
+
+static ::testing::AssertionResult TestLanguage(const char* input,
+                                               const char* lang) {
+  std::vector<std::string> parts = util::SplitAndLowercase(input, '-');
+  LocaleValue lv;
+  ssize_t count = lv.InitFromParts(std::begin(parts), std::end(parts));
+  if (count < 0) {
+    return ::testing::AssertionFailure() << " failed to parse '" << input
+                                         << "'.";
+  }
+
+  if (count != 1) {
+    return ::testing::AssertionFailure()
+           << count << " parts were consumed parsing '" << input
+           << "' but expected 1.";
+  }
+
+  if (memcmp(lv.language, lang, std::min(strlen(lang), sizeof(lv.language))) !=
+      0) {
+    return ::testing::AssertionFailure()
+           << "expected " << lang << " but got "
+           << std::string(lv.language, sizeof(lv.language)) << ".";
+  }
+
+  return ::testing::AssertionSuccess();
+}
+
+static ::testing::AssertionResult TestLanguageRegion(const char* input,
+                                                     const char* lang,
+                                                     const char* region) {
+  std::vector<std::string> parts = util::SplitAndLowercase(input, '-');
+  LocaleValue lv;
+  ssize_t count = lv.InitFromParts(std::begin(parts), std::end(parts));
+  if (count < 0) {
+    return ::testing::AssertionFailure() << " failed to parse '" << input
+                                         << "'.";
+  }
+
+  if (count != 2) {
+    return ::testing::AssertionFailure()
+           << count << " parts were consumed parsing '" << input
+           << "' but expected 2.";
+  }
+
+  if (memcmp(lv.language, lang, std::min(strlen(lang), sizeof(lv.language))) !=
+      0) {
+    return ::testing::AssertionFailure()
+           << "expected " << input << " but got "
+           << std::string(lv.language, sizeof(lv.language)) << ".";
+  }
+
+  if (memcmp(lv.region, region, std::min(strlen(region), sizeof(lv.region))) !=
+      0) {
+    return ::testing::AssertionFailure()
+           << "expected " << region << " but got "
+           << std::string(lv.region, sizeof(lv.region)) << ".";
+  }
+
+  return ::testing::AssertionSuccess();
+}
+
+TEST(ConfigDescriptionTest, ParseLanguage) {
+  EXPECT_TRUE(TestLanguage("en", "en"));
+  EXPECT_TRUE(TestLanguage("fr", "fr"));
+  EXPECT_FALSE(TestLanguage("land", ""));
+  EXPECT_TRUE(TestLanguage("fr-land", "fr"));
+
+  EXPECT_TRUE(TestLanguageRegion("fr-rCA", "fr", "CA"));
+}
+
+}  // namespace android