1 files changed, 31 insertions, 0 deletions
diff --git a/test/platform/graphics/direct2d/ConvertTest.cpp b/test/platform/graphics/direct2d/ConvertTest.cpp
new file mode 100644
index 00000000..c30bb6a5
--- /dev/null
+++ b/test/platform/graphics/direct2d/ConvertTest.cpp
@@ -0,0 +1,31 @@
+#include "cru/platform/Matrix.h"
+#include "cru/platform/graphics/direct2d/ConvertUtil.h"
+
+#include <catch2/catch_test_macros.hpp>
+#include "catch2/catch_approx.hpp"
+
+using Catch::Approx;
+using cru::platform::Matrix;
+using cru::platform::graphics::direct2d::Convert;
+
+TEST_CASE("MatrixConvert Rotation", "[matrix]") {
+  auto matrix = Convert(Matrix::Rotation(90));
+
+  auto m = *D2D1::Matrix3x2F::ReinterpretBaseType(&matrix);
+
+  auto p = m.TransformPoint({1, 1});
+
+  REQUIRE(p.x == Approx(-1));
+  REQUIRE(p.y == Approx(1));
+}
+
+TEST_CASE("MatrixConvert RotationAndTranslation", "[matrix]") {
+  auto matrix = Convert(Matrix::Rotation(90) * Matrix::Translation(1, 1));
+
+  auto m = *D2D1::Matrix3x2F::ReinterpretBaseType(&matrix);
+
+  auto p = m.TransformPoint({1, 1});
+
+  REQUIRE(p.x == Approx(0));
+  REQUIRE(p.y == Approx(2));
+}