Separated test suites into their individual modules

- Building per module only requires to have split test utility sections
- System module tests are always added, as the system module is always built

test/src/TestUtilities/Graphics.cpp

@@ -0,0 +1,19 @@
+// Note: No need to increase compile time by including TestUtilities/Graphics.hpp
+#include <SFML/Graphics/Color.hpp>
+#include <sstream>
+
+// String conversions for Catch framework
+namespace Catch
+{
+    std::string toString(const sf::Color& color)
+    {
+        std::ostringstream stream;
+        stream << "0x" << std::hex << color.toInteger() << std::dec
+               << " (r=" << static_cast<int>(color.r)
+               << ", g=" << static_cast<int>(color.g)
+               << ", b=" << static_cast<int>(color.b)
+               << ", a=" << static_cast<int>(color.a) << ")";
+
+        return stream.str();
+    }
+}

test/src/TestUtilities/Graphics.hpp

@@ -0,0 +1,23 @@
+// Header for SFML unit tests.
+//
+// For a new graphics module test case, include this header and not <catch.hpp> directly.
+// This ensures that string conversions are visible and can be used by Catch for debug output.
+
+#ifndef SFML_TESTUTILITIES_GRAPHICS_HPP
+#define SFML_TESTUTILITIES_GRAPHICS_HPP
+
+#include "Window.hpp"
+
+// Forward declarations for non-template types
+namespace sf
+{
+    class Color;
+}
+
+// String conversions for Catch framework
+namespace Catch
+{
+    std::string toString(const sf::Color& color);
+}
+
+#endif // SFML_TESTUTILITIES_GRAPHICS_HPP

test/src/TestUtilities/System.cpp

@@ -0,0 +1,20 @@
+// Note: No need to increase compile time by including TestUtilities/System.hpp
+#include <SFML/System/String.hpp>
+#include <SFML/System/Time.hpp>
+#include <sstream>
+
+// String conversions for Catch framework
+namespace Catch
+{
+    std::string toString(const sf::String& string)
+    {
+        return string.toAnsiString();
+    }
+
+    std::string toString(sf::Time time)
+    {
+        std::ostringstream stream;
+        stream << time.asMicroseconds() << "us";
+        return stream.str();
+    }
+}

test/src/TestUtilities/System.hpp

@@ -0,0 +1,45 @@
+// Header for SFML unit tests.
+//
+// For a new system module test case, include this header and not <catch.hpp> directly.
+// This ensures that string conversions are visible and can be used by Catch for debug output.
+
+#ifndef SFML_TESTUTILITIES_SYSTEM_HPP
+#define SFML_TESTUTILITIES_SYSTEM_HPP
+
+#include <catch.hpp>
+
+#include <SFML/System/Vector2.hpp>
+#include <SFML/System/Vector3.hpp>
+#include <sstream>
+
+// Forward declarations for non-template types
+namespace sf
+{
+    class String;
+    class Time;
+}
+
+// String conversions for Catch framework
+namespace Catch
+{
+    std::string toString(const sf::String& string);
+    std::string toString(sf::Time time);
+
+    template <typename T>
+    std::string toString(const sf::Vector2<T>& vector)
+    {
+        std::ostringstream stream;
+        stream << "(" << vector.x << ", " << vector.y << ")";
+        return stream.str();
+    }
+
+    template <typename T>
+    std::string toString(const sf::Vector3<T>& vector)
+    {
+        std::ostringstream stream;
+        stream << "(" << vector.x << ", " << vector.y << ", " << vector.z << ")";
+        return stream.str();
+    }
+}
+
+#endif // SFML_TESTUTILITIES_SYSTEM_HPP

test/src/TestUtilities/Window.cpp

@@ -0,0 +1,14 @@
+// Note: No need to increase compile time by including TestUtilities/Window.hpp
+#include <SFML/Window/VideoMode.hpp>
+#include <sstream>
+
+// String conversions for Catch framework
+namespace Catch
+{
+    std::string toString(const sf::VideoMode& videoMode)
+    {
+        std::ostringstream stream;
+        stream << videoMode.width << "x" << videoMode.height << "x" << videoMode.bitsPerPixel;
+        return stream.str();
+    }
+}

test/src/TestUtilities/Window.hpp

@@ -0,0 +1,33 @@
+// Header for SFML unit tests.
+//
+// For a new window module test case, include this header and not <catch.hpp> directly.
+// This ensures that string conversions are visible and can be used by Catch for debug output.
+
+#ifndef SFML_TESTUTILITIES_WINDOW_HPP
+#define SFML_TESTUTILITIES_WINDOW_HPP
+
+#include "System.hpp"
+
+#include <SFML/Graphics/Rect.hpp>
+
+// Forward declarations for non-template types
+namespace sf
+{
+    class VideoMode;
+}
+
+// String conversions for Catch framework
+namespace Catch
+{
+    std::string toString(const sf::VideoMode& videoMode);
+
+    template <typename T>
+    std::string toString(const sf::Rect<T>& rect)
+    {
+        std::ostringstream stream;
+        stream << "(left=" << rect.left << ", top=" << rect.top << ", width=" << rect.width << ", height=" << rect.height << ")";
+        return stream.str();
+    }
+}
+
+#endif // SFML_TESTUTILITIES_WINDOW_HPP