1 files changed, 103 insertions, 0 deletions
diff --git a/libs/androidfw/tests/Config_test.cpp b/libs/androidfw/tests/Config_test.cpp
new file mode 100644
index 0000000..ef30df4
--- /dev/null
+++ b/libs/androidfw/tests/Config_test.cpp
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2014 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/ResourceTypes.h>
+#include <utils/Log.h>
+#include <utils/String8.h>
+#include <utils/Vector.h>
+
+#include "TestHelpers.h"
+#include <gtest/gtest.h>
+
+namespace android {
+
+static ResTable_config selectBest(const ResTable_config& target,
+        const Vector<ResTable_config>& configs) {
+    ResTable_config bestConfig;
+    memset(&bestConfig, 0, sizeof(bestConfig));
+    const size_t configCount = configs.size();
+    for (size_t i = 0; i < configCount; i++) {
+        const ResTable_config& thisConfig = configs[i];
+        if (!thisConfig.match(target)) {
+            continue;
+        }
+
+        if (thisConfig.isBetterThan(bestConfig, &target)) {
+            bestConfig = thisConfig;
+        }
+    }
+    return bestConfig;
+}
+
+static ResTable_config buildDensityConfig(int density) {
+    ResTable_config config;
+    memset(&config, 0, sizeof(config));
+    config.density = uint16_t(density);
+    config.sdkVersion = 4;
+    return config;
+}
+
+TEST(ConfigTest, shouldSelectBestDensity) {
+    ResTable_config deviceConfig;
+    memset(&deviceConfig, 0, sizeof(deviceConfig));
+    deviceConfig.density = ResTable_config::DENSITY_XHIGH;
+    deviceConfig.sdkVersion = 21;
+
+    Vector<ResTable_config> configs;
+
+    ResTable_config expectedBest = buildDensityConfig(ResTable_config::DENSITY_HIGH);
+    configs.add(expectedBest);
+    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
+
+    expectedBest = buildDensityConfig(ResTable_config::DENSITY_XXHIGH);
+    configs.add(expectedBest);
+    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
+
+    expectedBest = buildDensityConfig(int(ResTable_config::DENSITY_XXHIGH) - 20);
+    configs.add(expectedBest);
+    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
+
+    configs.add(buildDensityConfig(int(ResTable_config::DENSITY_HIGH) + 20));
+    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
+
+    expectedBest = buildDensityConfig(ResTable_config::DENSITY_XHIGH);
+    configs.add(expectedBest);
+    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
+
+    expectedBest = buildDensityConfig(ResTable_config::DENSITY_ANY);
+    expectedBest.sdkVersion = 21;
+    configs.add(expectedBest);
+    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
+}
+
+TEST(ConfigTest, shouldSelectBestDensityWhenNoneSpecified) {
+    ResTable_config deviceConfig;
+    memset(&deviceConfig, 0, sizeof(deviceConfig));
+    deviceConfig.sdkVersion = 21;
+
+    Vector<ResTable_config> configs;
+    configs.add(buildDensityConfig(ResTable_config::DENSITY_HIGH));
+
+    ResTable_config expectedBest = buildDensityConfig(ResTable_config::DENSITY_MEDIUM);
+    configs.add(expectedBest);
+    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
+
+    expectedBest = buildDensityConfig(ResTable_config::DENSITY_ANY);
+    configs.add(expectedBest);
+    ASSERT_EQ(expectedBest, selectBest(deviceConfig, configs));
+}
+
+}  // namespace android.