4 files changed, 67 insertions, 1 deletions
diff --git a/src/test/AssetTest.cpp b/src/test/AssetTest.cpp
new file mode 100644
index 0000000..8aa7629
--- /dev/null
+++ b/src/test/AssetTest.cpp
@@ -0,0 +1,26 @@
+#include <gtest/gtest.h>
+
+#include <crepe/api/Asset.h>
+#include <crepe/api/Config.h>
+
+using namespace std;
+using namespace crepe;
+using namespace testing;
+
+class AssetTest : public Test {
+public:
+	Config & cfg = Config::get_instance();
+	void SetUp() override { this->cfg.asset.root_pattern = ".crepe-root"; }
+};
+
+TEST_F(AssetTest, Existant) { ASSERT_NO_THROW(Asset{"asset/texture/img.png"}); }
+
+TEST_F(AssetTest, Nonexistant) { ASSERT_ANY_THROW(Asset{"asset/nonexistant"}); }
+
+TEST_F(AssetTest, Rootless) {
+	cfg.asset.root_pattern.clear();
+
+	string arbitrary = "\\/this is / /../passed through as-is";
+	Asset asset{arbitrary};
+	ASSERT_EQ(arbitrary, asset.get_path());
+}
diff --git a/src/test/CMakeLists.txt b/src/test/CMakeLists.txt
index d56d80f..f189e3d 100644
--- a/src/test/CMakeLists.txt
+++ b/src/test/CMakeLists.txt
@@ -3,6 +3,9 @@ target_sources(test_main PUBLIC
 	PhysicsTest.cpp
 	ScriptTest.cpp
 	ParticleTest.cpp
+	AssetTest.cpp
+	OptionalRefTest.cpp
+	RenderSystemTest.cpp
 	ECSTest.cpp
 	SceneManagerTest.cpp
 )
diff --git a/src/test/OptionalRefTest.cpp b/src/test/OptionalRefTest.cpp
new file mode 100644
index 0000000..2072d56
--- /dev/null
+++ b/src/test/OptionalRefTest.cpp
@@ -0,0 +1,37 @@
+#include <gtest/gtest.h>
+
+#include <crepe/util/OptionalRef.h>
+
+using namespace std;
+using namespace crepe;
+using namespace testing;
+
+TEST(OptionalRefTest, Explicit) {
+	string value = "foo";
+	OptionalRef<string> ref;
+	EXPECT_FALSE(ref);
+	ASSERT_THROW(ref.get(), runtime_error);
+
+	ref.set(value);
+	EXPECT_TRUE(ref);
+	ASSERT_NO_THROW(ref.get());
+
+	ref.clear();
+	EXPECT_FALSE(ref);
+	ASSERT_THROW(ref.get(), runtime_error);
+}
+
+TEST(OptionalRefTest, Implicit) {
+	string value = "foo";
+	OptionalRef<string> ref = value;
+	EXPECT_TRUE(ref);
+	ASSERT_NO_THROW(ref.get());
+
+	ref.clear();
+	EXPECT_FALSE(ref);
+	ASSERT_THROW(ref.get(), runtime_error);
+
+	ref = value;
+	EXPECT_TRUE(ref);
+	ASSERT_NO_THROW(ref.get());
+}
diff --git a/src/test/ParticleTest.cpp b/src/test/ParticleTest.cpp
index 4e655a9..cfbbc0e 100644
--- a/src/test/ParticleTest.cpp
+++ b/src/test/ParticleTest.cpp
@@ -29,7 +29,7 @@ public:
 
 			Color color(0, 0, 0, 0);
 			Sprite test_sprite = game_object.add_component<Sprite>(
-				make_shared<Texture>("../asset/texture/img.png"), color,
+				make_shared<Texture>("asset/texture/img.png"), color,
 				FlipSettings{true, true});
 
 			game_object.add_component<ParticleEmitter>(ParticleEmitter::Data{