1 files changed, 47 insertions, 0 deletions
diff --git a/src/test/OptionalRefTest.cpp b/src/test/OptionalRefTest.cpp
new file mode 100644
index 0000000..1c69348
--- /dev/null
+++ b/src/test/OptionalRefTest.cpp
@@ -0,0 +1,47 @@
+#include <gtest/gtest.h>
+
+#include <crepe/util/OptionalRef.h>
+
+using namespace std;
+using namespace crepe;
+using namespace testing;
+
+TEST(OptionalRefTest, Normal) {
+	string value = "foo";
+	OptionalRef<string> ref = value;
+
+	EXPECT_TRUE(ref);
+	ASSERT_NO_THROW({
+		string & value_ref = ref;
+		EXPECT_EQ(value_ref, value);
+	});
+
+	ref.clear();
+	EXPECT_FALSE(ref);
+	ASSERT_THROW({
+		string & value_ref = ref;
+	}, runtime_error);
+}
+
+TEST(OptionalRefTest, Empty) {
+	string value = "foo";
+	OptionalRef<string> ref;
+
+	EXPECT_FALSE(ref);
+	ASSERT_THROW({
+		string & value_ref = ref;
+	}, runtime_error);
+}
+
+TEST(OptionalRefTest, Chain) {
+	string value = "foo";
+	OptionalRef<string> ref1 = value;
+	OptionalRef<string> ref2 = ref1;
+
+	EXPECT_TRUE(ref2);
+	string & value_ref = ref2;
+	EXPECT_EQ(value_ref, value);
+	value_ref = "bar";
+	EXPECT_EQ(value_ref, value);
+}
+