Added unit test for re-initialization

Test/CMakeLists.txt

@@ -3,15 +3,21 @@ project(Test)
 
 set(CMAKE_CXX_STANDARD 17)
 
-include_directories(../Src)
+ADD_COMPILE_DEFINITIONS(_EULE_NO_INTRINSICS_)
-link_directories(../Src/cmake-build-debug)
+
+INCLUDE_DIRECTORIES(../Src/Eule/)
+INCLUDE_DIRECTORIES(../Src/)
+
+FILE(GLOB Eule ../Src/Eule/Eule/*.cpp)
+FILE(GLOB BmpPP ../Src/*.cpp)
 
 add_executable(Test
+        ${Eule}
+        ${BmpPP}
+
         Catch2.h
         main.cpp
 
         BmpHeader.cpp
+        ReInitialize.cpp
 )
-
-target_link_libraries(Test BmpPP)
-

Test/ReInitialize.cpp

@@ -0,0 +1,32 @@
+#include <Bmp.h>
+#include "Catch2.h"
+
+using namespace Leonetienne::BmpPP;
+
+// Tests that re-initializing images produces the correct getter values
+TEST_CASE(__FILE__"/ReInitialize", "[ReInitialize]")
+{
+    // Create image
+    BMP bmp({800, 600}, Colormode::RGBA);
+
+    SECTION("Check that the initial values are OK") {
+        REQUIRE(bmp.GetDimensions().x == 800);
+        REQUIRE(bmp.GetDimensions().y == 600);
+        REQUIRE(bmp.GetNumColorChannels() == 4);
+        REQUIRE(bmp.GetColormode() == Colormode::RGBA);
+        REQUIRE(bmp.GetPixelbufferSize() == 800*600*4);
+    }
+
+    // Now re-initialize the image
+    bmp.ReInitialize({1920, 1080}, Colormode::RGB);
+
+    SECTION("Check that getters now return the updated values") {
+        REQUIRE(bmp.GetDimensions().x == 1920);
+        REQUIRE(bmp.GetDimensions().y == 1080);
+        REQUIRE(bmp.GetNumColorChannels() == 3);
+        REQUIRE(bmp.GetColormode() == Colormode::RGB);
+        REQUIRE(bmp.GetPixelbufferSize() == 1920*1080*3);
+    }
+
+    return;
+}