Complete OpenGL test suite - 56 tests

Added missing tests to reach planned 56:
- CommandList: EnableDisable_DepthTest, EnableDisable_Blending
- RTV: GetTexture, GetMipLevel
- DSV: Initialize_Texture, GetTexture, GetMipLevel

Final count: 56 tests across all 12 components

tests/RHI/OpenGL/test_depth_stencil_view.cpp

@@ -1,5 +1,6 @@
 #include "fixtures/OpenGLTestFixture.h"
 #include "XCEngine/RHI/OpenGL/OpenGLDepthStencilView.h"
+#include "XCEngine/RHI/OpenGL/OpenGLTexture.h"
 
 using namespace XCEngine::RHI;
 
@@ -16,3 +17,44 @@ TEST_F(OpenGLTestFixture, DepthStencilView_Bind_Unbind) {
     
     dsv.Shutdown();
 }
+
+TEST_F(OpenGLTestFixture, DepthStencilView_Initialize_Texture) {
+    OpenGLTexture texture;
+    texture.Initialize2D(64, 64, 4, nullptr, false);
+    
+    OpenGLDepthStencilView dsv;
+    bool result = dsv.Initialize(texture.GetID());
+    
+    if (result) {
+        EXPECT_NE(dsv.GetFramebuffer(), 0u);
+        dsv.Shutdown();
+    }
+    
+    texture.Shutdown();
+}
+
+TEST_F(OpenGLTestFixture, DepthStencilView_GetTexture) {
+    OpenGLTexture texture;
+    texture.Initialize2D(64, 64, 4, nullptr, false);
+    
+    OpenGLDepthStencilView dsv;
+    dsv.Initialize(texture.GetID());
+    
+    EXPECT_EQ(dsv.GetTexture(), texture.GetID());
+    
+    dsv.Shutdown();
+    texture.Shutdown();
+}
+
+TEST_F(OpenGLTestFixture, DepthStencilView_GetMipLevel) {
+    OpenGLTexture texture;
+    texture.Initialize2D(64, 64, 4, nullptr, false);
+    
+    OpenGLDepthStencilView dsv;
+    dsv.Initialize(texture.GetID(), 2);
+    
+    EXPECT_EQ(dsv.GetMipLevel(), 2);
+    
+    dsv.Shutdown();
+    texture.Shutdown();
+}