1 files changed, 29 insertions, 0 deletions
diff --git a/test/win/graphics/direct/ConvertTest.cpp b/test/win/graphics/direct/ConvertTest.cpp
new file mode 100644
index 00000000..f8f95dac
--- /dev/null
+++ b/test/win/graphics/direct/ConvertTest.cpp
@@ -0,0 +1,29 @@
+#include "cru/platform/Matrix.hpp"
+#include "cru/win/graphics/direct/ConvertUtil.hpp"
+
+#include <gtest/gtest.h>
+
+using cru::platform::Matrix;
+using cru::platform::graphics::win::direct::Convert;
+
+TEST(MatrixConvert, Rotation) {
+  auto matrix = Convert(Matrix::Rotation(90));
+
+  auto m = *D2D1::Matrix3x2F::ReinterpretBaseType(&matrix);
+
+  auto p = m.TransformPoint({1, 1});
+
+  ASSERT_FLOAT_EQ(p.x, -1);
+  ASSERT_FLOAT_EQ(p.y, 1);
+}
+
+TEST(MatrixConvert, RotationAndTranslation) {
+  auto matrix = Convert(Matrix::Rotation(90) * Matrix::Translation(1, 1));
+
+  auto m = *D2D1::Matrix3x2F::ReinterpretBaseType(&matrix);
+
+  auto p = m.TransformPoint({1, 1});
+
+  ASSERT_FLOAT_EQ(p.x, 0);
+  ASSERT_FLOAT_EQ(p.y, 2);
+}