Add tests for ObjectBase's refcounting
diff --git a/src/tests/CMakeLists.txt b/src/tests/CMakeLists.txt
index 1ec55d5..5980877 100644
--- a/src/tests/CMakeLists.txt
+++ b/src/tests/CMakeLists.txt
@@ -19,6 +19,7 @@
${UNITTESTS_DIR}/CommandAllocatorTests.cpp
${UNITTESTS_DIR}/EnumClassBitmasksTests.cpp
${UNITTESTS_DIR}/MathTests.cpp
+ ${UNITTESTS_DIR}/ObjectBaseTests.cpp
${UNITTESTS_DIR}/PerStageTests.cpp
${UNITTESTS_DIR}/RefCountedTests.cpp
${UNITTESTS_DIR}/ToBackendTests.cpp
diff --git a/src/tests/unittests/ObjectBaseTests.cpp b/src/tests/unittests/ObjectBaseTests.cpp
new file mode 100644
index 0000000..fa7997f
--- /dev/null
+++ b/src/tests/unittests/ObjectBaseTests.cpp
@@ -0,0 +1,123 @@
+// Copyright 2017 The NXT Authors
+//
+// 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 "nxt/nxtcpp.h"
+
+class Object : public nxt::ObjectBase<Object, int*> {
+ public:
+ using ObjectBase::ObjectBase;
+ using ObjectBase::operator=;
+
+ static void NxtReference(int* handle) {
+ ASSERT_LT(0, *handle);
+ *handle += 1;
+ }
+ static void NxtRelease(int* handle) {
+ ASSERT_LT(0, *handle);
+ *handle -= 1;
+ }
+};
+
+// Test that creating an C++ object from a C object takes a ref.
+// Also test that the C++ object destructor removes a ref.
+TEST(ObjectBase, CTypeConstructor) {
+ int refcount = 1;
+ {
+ Object obj(&refcount);
+ ASSERT_EQ(2, refcount);
+ }
+ ASSERT_EQ(1, refcount);
+}
+
+// Test consuming a C object into a C++ object doesn't take a ref.
+TEST(ObjectBase, AcquireConstruction) {
+ int refcount = 1;
+ {
+ Object object = Object::Acquire(&refcount);
+ ASSERT_EQ(1, refcount);
+ }
+ ASSERT_EQ(0, refcount);
+}
+
+// Test that cloning takes a new ref. Also test .Get().
+TEST(ObjectBase, Clone) {
+ int refcount = 1;
+ {
+ Object obj1(&refcount);
+ Object obj2 = obj1.Clone();
+
+ ASSERT_EQ(3, refcount);
+ ASSERT_EQ(&refcount, obj1.Get());
+ ASSERT_EQ(&refcount, obj2.Get());
+ }
+ ASSERT_EQ(1, refcount);
+}
+
+// Test that Release consumes the C++ object into a C object and doesn't release
+TEST(ObjectBase, Release) {
+ int refcount = 1;
+ {
+ Object obj(&refcount);
+ ASSERT_EQ(2, refcount);
+
+ ASSERT_EQ(&refcount, obj.Release());
+ ASSERT_EQ(nullptr, obj.Get());
+ ASSERT_EQ(2, refcount);
+ }
+ ASSERT_EQ(2, refcount);
+}
+
+// Test using C++ objects in conditions
+TEST(ObjectBase, OperatorBool) {
+ int refcount = 1;
+ Object trueObj(&refcount);
+ Object falseObj;
+
+ if (falseObj || !trueObj) {
+ ASSERT_TRUE(false);
+ }
+}
+
+// Test the move constructor of C++ objects
+TEST(ObjectBase, MoveConstructor) {
+ int refcount = 1;
+ Object source(&refcount);
+ Object destination(std::move(source));
+
+ ASSERT_EQ(source.Get(), nullptr);
+ ASSERT_EQ(destination.Get(), &refcount);
+ ASSERT_EQ(2, refcount);
+
+ destination = Object();
+ ASSERT_EQ(refcount, 1);
+}
+
+// Test the move assignment of C++ objects
+TEST(ObjectBase, MoveAssignment) {
+ int refcount = 1;
+ Object source(&refcount);
+
+ Object destination;
+ destination = std::move(source);
+
+ ASSERT_EQ(source.Get(), nullptr);
+ ASSERT_EQ(destination.Get(), &refcount);
+ ASSERT_EQ(2, refcount);
+
+ destination = Object();
+ ASSERT_EQ(refcount, 1);
+}
+
