1 files changed, 93 insertions, 0 deletions
diff --git a/tools/aapt2/link/VersionCollapser_test.cpp b/tools/aapt2/link/VersionCollapser_test.cpp
new file mode 100644
index 000000000000..b5387fe132cc
--- /dev/null
+++ b/tools/aapt2/link/VersionCollapser_test.cpp
@@ -0,0 +1,93 @@
+/*
+ * 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 "link/Linkers.h"
+#include "test/Test.h"
+
+namespace aapt {
+
+template <typename T>
+using uptr = std::unique_ptr<T>;
+
+static uptr<ResourceTable> buildTableWithConfigs(const StringPiece16& name,
+                                                 std::initializer_list<std::string> list) {
+    test::ResourceTableBuilder builder;
+    for (const std::string& item : list) {
+        builder.addSimple(name, test::parseConfigOrDie(item));
+    }
+    return builder.build();
+}
+
+TEST(VersionCollapserTest, CollapseVersions) {
+    uptr<IAaptContext> context = test::ContextBuilder().setMinSdkVersion(7).build();
+
+    const StringPiece16 resName = u"@android:string/foo";
+
+    uptr<ResourceTable> table =
+            buildTableWithConfigs(resName,
+                                  { "land-v4", "land-v5", "sw600dp", "land-v6",
+                                          "land-v14", "land-v21" });
+
+    VersionCollapser collapser;
+    ASSERT_TRUE(collapser.consume(context.get(), table.get()));
+
+    // These should be removed.
+    EXPECT_EQ(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v4")));
+    EXPECT_EQ(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v5")));
+
+    // These should remain.
+    EXPECT_NE(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("sw600dp")));
+    EXPECT_NE(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v6")));
+    EXPECT_NE(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v14")));
+    EXPECT_NE(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v21")));
+}
+
+TEST(VersionCollapserTest, CollapseVersionsWhenMinSdkIsHighest) {
+    uptr<IAaptContext> context = test::ContextBuilder().setMinSdkVersion(26).build();
+
+    const StringPiece16 resName = u"@android:string/foo";
+
+    uptr<ResourceTable> table =
+                buildTableWithConfigs(resName,
+                                      { "land-v4", "land-v5", "sw600dp", "land-v6",
+                                              "land-v14", "land-v21" });
+    VersionCollapser collapser;
+    ASSERT_TRUE(collapser.consume(context.get(), table.get()));
+
+    // These should all be removed.
+    EXPECT_EQ(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v4")));
+    EXPECT_EQ(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v5")));
+    EXPECT_EQ(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v6")));
+    EXPECT_EQ(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v14")));
+
+    // These should remain.
+    EXPECT_NE(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("sw600dp")));
+    EXPECT_NE(nullptr,
+              test::getValueForConfig<Id>(table.get(), resName, test::parseConfigOrDie("land-v21")));
+}
+
+} // namespace aapt