add SDL tests (#103)

* add SDL tests

* add array include

* change some asserts to expect

* add output on failure flag to ctest

* remove tests which only pass in headless or debug

Author: skrax

.github/workflows/sourcehold.yml

@@ -147,7 +147,7 @@ jobs:
       run: |
         if [[ ${{ matrix.target-platform }} != 'ios-simulator' ]]; then
           pushd build/test
-          ctest
+          ctest --output-on-failure
           popd
         fi
 

src/SDL/CMakeLists.txt

@@ -17,7 +17,7 @@ target_link_libraries(SourceholdSDL
   PRIVATE ProjectOptions
   PRIVATE System
   PUBLIC SDL2::SDL2
-  PRIVATE Common
+  PUBLIC Common
 )
 
 add_library(Sourcehold::SDL ALIAS SourceholdSDL)

test/CMakeLists.txt

@@ -20,10 +20,17 @@ add_test(CommonTest
 
 target_link_libraries(CommonTest PRIVATE Common)
 
+add_test(SDLTest
+  SDLTest.cpp
+)
+
+target_link_libraries(SDLTest PRIVATE Sourcehold::SDL)
+
 add_test(RenderingTest
   ColorTest.cpp
   SurfaceTest.cpp
 )
 
 target_link_libraries(RenderingTest PRIVATE Rendering)
 
+

test/SDLTest.cpp

@@ -0,0 +1,27 @@
+#include <gtest/gtest.h>
+#include <numeric>
+#include <array>
+#include "SDL/SDLBackend.h"
+using namespace Sourcehold::SDL;
+
+TEST(SDLHelpers, At) {
+  std::array<int, 100> groundtruth;
+  std::iota(std::begin(groundtruth), std::end(groundtruth), 0);
+
+  for (auto y = 0; y < 10; ++y) {
+    for (auto x = 0; x < 10; ++x) {
+      ASSERT_EQ(At({x, y}, 10), groundtruth[At({x, y}, 10)]);
+    }
+  }
+}
+
+TEST(SDLHelpers, ToSDLRectPtr) {
+  Rect<int> rect = {1, 2, 3, 4};
+  auto sdl_rect = ToSDLRectPtr(rect);
+
+  ASSERT_EQ(static_cast<void*>(sdl_rect), static_cast<void*>(&rect));
+  ASSERT_EQ(sdl_rect->x, rect.x);
+  ASSERT_EQ(sdl_rect->y, rect.y);
+  ASSERT_EQ(sdl_rect->w, rect.w);
+  ASSERT_EQ(sdl_rect->h, rect.h);
+}