1 files changed, 53 insertions, 0 deletions
diff --git a/libs/hwui/tests/unit/RenderNodeTests.cpp b/libs/hwui/tests/unit/RenderNodeTests.cpp
new file mode 100644
index 000000000000..7c57a50c951d
--- /dev/null
+++ b/libs/hwui/tests/unit/RenderNodeTests.cpp
@@ -0,0 +1,53 @@
+/*
+ * 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 <gtest/gtest.h>
+
+#include "RenderNode.h"
+#include "TreeInfo.h"
+#include "tests/common/TestUtils.h"
+#include "utils/Color.h"
+
+using namespace android;
+using namespace android::uirenderer;
+
+TEST(RenderNode, hasParents) {
+    auto child = TestUtils::createNode(0, 0, 200, 400,
+            [](RenderProperties& props, TestCanvas& canvas) {
+        canvas.drawColor(Color::Red_500, SkXfermode::kSrcOver_Mode);
+    });
+    auto parent = TestUtils::createNode(0, 0, 200, 400,
+            [&child](RenderProperties& props, TestCanvas& canvas) {
+        canvas.drawRenderNode(child.get());
+    });
+
+    TestUtils::syncHierarchyPropertiesAndDisplayList(parent);
+
+    EXPECT_TRUE(child->hasParents()) << "Child node has no parent";
+    EXPECT_FALSE(parent->hasParents()) << "Root node shouldn't have any parents";
+
+    TestUtils::recordNode(*parent, [](TestCanvas& canvas) {
+        canvas.drawColor(Color::Amber_500, SkXfermode::kSrcOver_Mode);
+    });
+
+    EXPECT_TRUE(child->hasParents()) << "Child should still have a parent";
+    EXPECT_FALSE(parent->hasParents()) << "Root node shouldn't have any parents";
+
+    TestUtils::syncHierarchyPropertiesAndDisplayList(parent);
+
+    EXPECT_FALSE(child->hasParents()) << "Child should be removed";
+    EXPECT_FALSE(parent->hasParents()) << "Root node shouldn't have any parents";
+}