1 files changed, 47 insertions, 0 deletions
diff --git a/tools/aapt2/optimize/ResourceDeduper_test.cpp b/tools/aapt2/optimize/ResourceDeduper_test.cpp
index 2e098aec4f8d..048e318d2802 100644
--- a/tools/aapt2/optimize/ResourceDeduper_test.cpp
+++ b/tools/aapt2/optimize/ResourceDeduper_test.cpp
@@ -80,11 +80,58 @@ TEST(ResourceDeduperTest, DifferentValuesAreKept) {
           .Build();
 
   ASSERT_TRUE(ResourceDeduper().Consume(context.get(), table.get()));
+  EXPECT_THAT(table, HasValue("android:string/keep", default_config));
   EXPECT_THAT(table, HasValue("android:string/keep", ldrtl_config));
   EXPECT_THAT(table, HasValue("android:string/keep", ldrtl_v21_config));
   EXPECT_THAT(table, HasValue("android:string/keep", land_config));
 }
 
+TEST(ResourceDeduperTest, SameValuesAreDedupedIncompatibleSiblings) {
+  std::unique_ptr<IAaptContext> context = test::ContextBuilder().Build();
+  const ConfigDescription default_config = {};
+  const ConfigDescription ldrtl_config = test::ParseConfigOrDie("ldrtl");
+  const ConfigDescription ldrtl_night_config = test::ParseConfigOrDie("ldrtl-night");
+  // Chosen because this configuration is not compatible with ldrtl-night.
+  const ConfigDescription ldrtl_notnight_config = test::ParseConfigOrDie("ldrtl-notnight");
+
+  std::unique_ptr<ResourceTable> table =
+      test::ResourceTableBuilder()
+          .AddString("android:string/keep", ResourceId{}, default_config, "keep")
+          .AddString("android:string/keep", ResourceId{}, ldrtl_config, "dedupe")
+          .AddString("android:string/keep", ResourceId{}, ldrtl_night_config, "dedupe")
+          .AddString("android:string/keep", ResourceId{}, ldrtl_notnight_config, "keep2")
+          .Build();
+
+  ASSERT_TRUE(ResourceDeduper().Consume(context.get(), table.get()));
+  EXPECT_THAT(table, HasValue("android:string/keep", default_config));
+  EXPECT_THAT(table, HasValue("android:string/keep", ldrtl_config));
+  EXPECT_THAT(table, Not(HasValue("android:string/keep", ldrtl_night_config)));
+  EXPECT_THAT(table, HasValue("android:string/keep", ldrtl_notnight_config));
+}
+
+TEST(ResourceDeduperTest, SameValuesAreDedupedCompatibleNonSiblings) {
+  std::unique_ptr<IAaptContext> context = test::ContextBuilder().Build();
+  const ConfigDescription default_config = {};
+  const ConfigDescription ldrtl_config = test::ParseConfigOrDie("ldrtl");
+  const ConfigDescription ldrtl_night_config = test::ParseConfigOrDie("ldrtl-night");
+  // Chosen because this configuration is compatible with ldrtl.
+  const ConfigDescription land_config = test::ParseConfigOrDie("land");
+
+  std::unique_ptr<ResourceTable> table =
+      test::ResourceTableBuilder()
+          .AddString("android:string/keep", ResourceId{}, default_config, "keep")
+          .AddString("android:string/keep", ResourceId{}, ldrtl_config, "dedupe")
+          .AddString("android:string/keep", ResourceId{}, ldrtl_night_config, "dedupe")
+          .AddString("android:string/keep", ResourceId{}, land_config, "keep2")
+          .Build();
+
+  ASSERT_TRUE(ResourceDeduper().Consume(context.get(), table.get()));
+  EXPECT_THAT(table, HasValue("android:string/keep", default_config));
+  EXPECT_THAT(table, HasValue("android:string/keep", ldrtl_config));
+  EXPECT_THAT(table, Not(HasValue("android:string/keep", ldrtl_night_config)));
+  EXPECT_THAT(table, HasValue("android:string/keep", land_config));
+}
+
 TEST(ResourceDeduperTest, LocalesValuesAreKept) {
   std::unique_ptr<IAaptContext> context = test::ContextBuilder().Build();
   const ConfigDescription default_config = {};