8 files changed, 123 insertions, 2 deletions
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index c534b909..3b9567cd 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -2,7 +2,12 @@ find_package(GTest CONFIG REQUIRED)
 
 include(GoogleTest)
 
-add_subdirectory(common)
-
 add_library(cru_test_base INTERFACE)
 target_link_libraries(cru_test_base INTERFACE GTest::gtest GTest::gtest_main)
+
+add_subdirectory(common)
+add_subdirectory(platform)
+
+if(WIN32)
+	add_subdirectory(win)
+endif()
diff --git a/test/common/HandlerRegistryTest.cpp b/test/common/HandlerRegistryTest.cpp
new file mode 100644
index 00000000..d1792c7c
--- /dev/null
+++ b/test/common/HandlerRegistryTest.cpp
@@ -0,0 +1,36 @@
+#include "cru/common/HandlerRegistry.hpp"
+
+#include <gtest/gtest.h>
+#include <algorithm>
+
+TEST(HandlerRegistry, Work) {
+  using namespace cru;
+  HandlerRegistry<void()> registry;
+
+  int counter = 1;
+
+  auto tag1 = registry.AddHandler([&counter] { counter++; });
+  auto tag2 = registry.AddHandler([&counter] { counter++; });
+
+  for (const auto& handler : registry) {
+    handler();
+  }
+
+  ASSERT_EQ(counter, 3);
+
+  registry.RemoveHandler(tag1);
+
+  for (const auto& handler : registry) {
+    handler();
+  }
+
+  ASSERT_EQ(counter, 4);
+
+  registry.RemoveHandler(tag2);
+
+  for (const auto& handler : registry) {
+    handler();
+  }
+
+  ASSERT_EQ(counter, 4);
+}
diff --git a/test/platform/CMakeLists.txt b/test/platform/CMakeLists.txt
new file mode 100644
index 00000000..9ad8fb51
--- /dev/null
+++ b/test/platform/CMakeLists.txt
@@ -0,0 +1,6 @@
+add_executable(cru_platform_base_test
+	MatrixTest.cpp
+)
+target_link_libraries(cru_platform_base_test PRIVATE cru_platform_base cru_test_base)
+
+gtest_discover_tests(cru_platform_base_test)
diff --git a/test/platform/MatrixTest.cpp b/test/platform/MatrixTest.cpp
new file mode 100644
index 00000000..3b8aab27
--- /dev/null
+++ b/test/platform/MatrixTest.cpp
@@ -0,0 +1,37 @@
+#include "cru/platform/GraphBase.hpp"
+#include "cru/platform/Matrix.hpp"
+
+#include <gtest/gtest.h>
+
+using cru::platform::Matrix;
+using cru::platform::Point;
+
+TEST(Matrix, Rotation) {
+  Point p(1, 1);
+
+  Point p90 = Matrix::Rotation(90).TransformPoint(p);
+  ASSERT_FLOAT_EQ(p90.x, -1);
+  ASSERT_FLOAT_EQ(p90.y, 1);
+
+  Point p180 = Matrix::Rotation(180).TransformPoint(p);
+  ASSERT_FLOAT_EQ(p180.x, -1);
+  ASSERT_FLOAT_EQ(p180.y, -1);
+
+  Point p270 = Matrix::Rotation(270).TransformPoint(p);
+  ASSERT_FLOAT_EQ(p270.x, 1);
+  ASSERT_FLOAT_EQ(p270.y, -1);
+}
+
+TEST(Matrix, TranslationAndRotation) {
+  Point p =
+      (Matrix::Translation(1, 1) * Matrix::Rotation(90)).TransformPoint({1, 1});
+  ASSERT_FLOAT_EQ(p.x, -2);
+  ASSERT_FLOAT_EQ(p.y, 2);
+}
+
+TEST(Matrix, RotationAndTranslation) {
+  Point p =
+      (Matrix::Rotation(90) * Matrix::Translation(1, 1)).TransformPoint({1, 1});
+  ASSERT_FLOAT_EQ(p.x, 0);
+  ASSERT_FLOAT_EQ(p.y, 2);
+}
diff --git a/test/win/CMakeLists.txt b/test/win/CMakeLists.txt
new file mode 100644
index 00000000..0ebdd7fe
--- /dev/null
+++ b/test/win/CMakeLists.txt
@@ -0,0 +1 @@
+add_subdirectory(graphics)
diff --git a/test/win/graphics/CMakeLists.txt b/test/win/graphics/CMakeLists.txt
new file mode 100644
index 00000000..c90537ac
--- /dev/null
+++ b/test/win/graphics/CMakeLists.txt
@@ -0,0 +1 @@
+add_subdirectory(direct)
diff --git a/test/win/graphics/direct/CMakeLists.txt b/test/win/graphics/direct/CMakeLists.txt
new file mode 100644
index 00000000..69e22ef7
--- /dev/null
+++ b/test/win/graphics/direct/CMakeLists.txt
@@ -0,0 +1,6 @@
+add_executable(cru_win_graphics_direct_test
+	ConvertTest.cpp
+)
+target_link_libraries(cru_win_graphics_direct_test PRIVATE cru_win_graphics_direct cru_test_base)
+
+gtest_discover_tests(cru_win_graphics_direct_test)
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);
+}