Add tests for sfTransform

Author: ChrisThrasher

test/CMakeLists.txt

@@ -50,6 +50,7 @@ add_executable(test-csfml-graphics
     Graphics/CoordinateType.test.cpp
     Graphics/Rect.test.cpp
     Graphics/StencilMode.test.cpp
+    Graphics/Transform.test.cpp
 )
 target_link_libraries(test-csfml-graphics PRIVATE csfml-graphics Catch2::Catch2WithMain SFML::Graphics)
 set_target_warnings(test-csfml-graphics)

test/Graphics/Transform.test.cpp

@@ -0,0 +1,128 @@
+#include <CSFML/Graphics/Transform.h>
+
+#include <catch2/catch_test_macros.hpp>
+
+#include <array>
+
+TEST_CASE("[Graphics] sfTransform")
+{
+    SECTION("Construction")
+    {
+        constexpr sfTransform transform{};
+        STATIC_CHECK(std::size(transform.matrix) == 9);
+        for (const auto element : transform.matrix)
+            CHECK(element == 0);
+    }
+
+    SECTION("sfTransform_Identity")
+    {
+        CHECK(sfTransform_Identity.matrix[0] == 1);
+        CHECK(sfTransform_Identity.matrix[1] == 0);
+        CHECK(sfTransform_Identity.matrix[2] == 0);
+        CHECK(sfTransform_Identity.matrix[3] == 0);
+        CHECK(sfTransform_Identity.matrix[4] == 1);
+        CHECK(sfTransform_Identity.matrix[5] == 0);
+        CHECK(sfTransform_Identity.matrix[6] == 0);
+        CHECK(sfTransform_Identity.matrix[7] == 0);
+        CHECK(sfTransform_Identity.matrix[8] == 1);
+    }
+
+    SECTION("sfTransform_fromMatrix")
+    {
+        const auto transform = sfTransform_fromMatrix(1, 2, 3, 4, 5, 6, 7, 8, 9);
+        CHECK(transform.matrix[0] == 1);
+        CHECK(transform.matrix[1] == 2);
+        CHECK(transform.matrix[2] == 3);
+        CHECK(transform.matrix[3] == 4);
+        CHECK(transform.matrix[4] == 5);
+        CHECK(transform.matrix[5] == 6);
+        CHECK(transform.matrix[6] == 7);
+        CHECK(transform.matrix[7] == 8);
+        CHECK(transform.matrix[8] == 9);
+    }
+
+    SECTION("sfTransform_getMatrix")
+    {
+        const auto            transform = sfTransform_fromMatrix(1, 2, 3, 4, 5, 6, 7, 8, 9);
+        std::array<float, 16> matrix{};
+        matrix.fill(std::numeric_limits<float>::signaling_NaN());
+        sfTransform_getMatrix(&transform, matrix.data());
+        CHECK(matrix[0] == 1);
+        CHECK(matrix[1] == 4);
+        CHECK(matrix[2] == 0);
+        CHECK(matrix[3] == 7);
+        CHECK(matrix[4] == 2);
+        CHECK(matrix[5] == 5);
+        CHECK(matrix[6] == 0);
+        CHECK(matrix[7] == 8);
+        CHECK(matrix[8] == 0);
+        CHECK(matrix[9] == 0);
+        CHECK(matrix[10] == 1);
+        CHECK(matrix[11] == 0);
+        CHECK(matrix[12] == 3);
+        CHECK(matrix[13] == 6);
+        CHECK(matrix[14] == 0);
+        CHECK(matrix[15] == 9);
+    }
+
+    SECTION("sfTransform_getInverse")
+    {
+        SECTION("Identity")
+        {
+            const auto inverse = sfTransform_getInverse(&sfTransform_Identity);
+            for (std::size_t i = 0; i < std::size(inverse.matrix); ++i)
+                CHECK(inverse.matrix[0] == sfTransform_Identity.matrix[0]);
+        }
+
+        SECTION("Non-identity")
+        {
+            const auto transform = sfTransform_fromMatrix(1, 2, 3, 4, 5, 4, 3, 2, 1);
+            const auto inverse   = sfTransform_getInverse(&transform);
+            CHECK(inverse.matrix[0] == 0.375f);
+            CHECK(inverse.matrix[1] == -0.5f);
+            CHECK(inverse.matrix[2] == 0.875f);
+            CHECK(inverse.matrix[3] == -1);
+            CHECK(inverse.matrix[4] == 1);
+            CHECK(inverse.matrix[5] == -1);
+            CHECK(inverse.matrix[6] == 0.875f);
+            CHECK(inverse.matrix[7] == -0.5f);
+            CHECK(inverse.matrix[8] == 0.375f);
+        }
+    }
+
+    SECTION("sfTransform_transformPoint")
+    {
+    }
+
+    SECTION("sfTransform_transformRect")
+    {
+    }
+
+    SECTION("sfTransform_combine")
+    {
+    }
+
+    SECTION("sfTransform_translate")
+    {
+    }
+
+    SECTION("sfTransform_rotate")
+    {
+    }
+
+    SECTION("sfTransform_rotateWithCenter")
+    {
+    }
+
+    SECTION("sfTransform_scale")
+    {
+    }
+
+    SECTION("sfTransform_scaleWithCenter")
+    {
+    }
+
+    SECTION("sfTransform_equal")
+    {
+    }
+}