RHI: Add DescriptorPool unit tests (8 tests, P1-5)

RHI模块测试重构.md

@@ -593,7 +593,8 @@ TEST_F(OpenGLTestFixture, CommandList_Dispatch) {
 
 | 优先级 | 问题 | 工作量 | 影响 | 状态 |
 |--------|------|--------|------|------|
-| 5 | 添加 DescriptorPool/Set 测试 | 中 | 已实现未测试 | ⏳ 待完成 |
+| 5 | 添加 DescriptorPool 测试 | 中 | 已实现未测试 | ✅ 已完成 (DescriptorPool) |
+| 5b | DescriptorSet 测试 | 中 | OpenGL 需要 GL context，暂跳过 | ⚠️ 待完成 |
 | 6 | CommandList 测试增强 | 大 | 大部分传递 nullptr | ⏳ 待完成 |
 | 7 | 添加 Compute/Dispatch 测试 | 中 | 重要功能缺失 | ⏳ 待完成 |
 | 8 | D3D12 PSO/shader 测试增强 | 小 | 当前测试 trivial | ⏳ 待完成 |
@@ -720,12 +721,20 @@ ctest -R "D3D12|OpenGL|RHITestFixture" -C Debug --output-on-failure
 
 ---
 
-**文档版本**: 1.2
+**文档版本**: 1.3
 **最后更新**: 2026-03-25
 **作者**: XCEngine Team
 
 ## 更新日志
 
+### v1.3 (2026-03-25)
+- P1-5: DescriptorPool 测试 ✅ 已完成
+  - 新增 `test_descriptor.cpp`，8个 DescriptorPool 测试
+  - 测试通过：D3D12 8 + OpenGL 8 = 16 tests
+  - DescriptorSet 测试暂跳过（OpenGL 需要 GL context）
+- 测试结果：D3D12 108测试 + OpenGL 108测试 = 216测试全部通过
+- 集成测试：8/8 全部通过
+
 ### v1.2 (2026-03-25)
 - P0-3: RenderPass 测试 ✅ 已完成
   - 新增 `test_render_pass.cpp`，10个测试

tests/RHI/unit/CMakeLists.txt

@@ -18,6 +18,7 @@ set(TEST_SOURCES
     test_framebuffer.cpp
     test_fence.cpp
     test_sampler.cpp
+    test_descriptor.cpp
     ${CMAKE_SOURCE_DIR}/tests/opengl/package/src/glad.c
 )
 

tests/RHI/unit/test_descriptor.cpp

@@ -0,0 +1,119 @@
+#include "fixtures/RHITestFixture.h"
+#include "XCEngine/RHI/RHIDescriptorPool.h"
+#include "XCEngine/RHI/RHIDescriptorSet.h"
+#include "XCEngine/RHI/RHISampler.h"
+
+using namespace XCEngine::RHI;
+
+TEST_P(RHITestFixture, DescriptorPool_Create_CBV_SRV_UAV) {
+    DescriptorPoolDesc desc = {};
+    desc.type = DescriptorHeapType::CBV_SRV_UAV;
+    desc.descriptorCount = 10;
+    desc.shaderVisible = true;
+    
+    RHIDescriptorPool* pool = GetDevice()->CreateDescriptorPool(desc);
+    if (pool != nullptr) {
+        EXPECT_EQ(pool->GetType(), DescriptorHeapType::CBV_SRV_UAV);
+        EXPECT_EQ(pool->GetDescriptorCount(), 10u);
+        pool->Shutdown();
+        delete pool;
+    }
+}
+
+TEST_P(RHITestFixture, DescriptorPool_Create_Sampler) {
+    DescriptorPoolDesc desc = {};
+    desc.type = DescriptorHeapType::Sampler;
+    desc.descriptorCount = 5;
+    desc.shaderVisible = true;
+    
+    RHIDescriptorPool* pool = GetDevice()->CreateDescriptorPool(desc);
+    if (pool != nullptr) {
+        EXPECT_EQ(pool->GetType(), DescriptorHeapType::Sampler);
+        pool->Shutdown();
+        delete pool;
+    }
+}
+
+TEST_P(RHITestFixture, DescriptorPool_Create_RTV) {
+    DescriptorPoolDesc desc = {};
+    desc.type = DescriptorHeapType::RTV;
+    desc.descriptorCount = 4;
+    desc.shaderVisible = false;
+    
+    RHIDescriptorPool* pool = GetDevice()->CreateDescriptorPool(desc);
+    if (pool != nullptr) {
+        EXPECT_EQ(pool->GetType(), DescriptorHeapType::RTV);
+        EXPECT_EQ(pool->GetDescriptorCount(), 4u);
+        pool->Shutdown();
+        delete pool;
+    }
+}
+
+TEST_P(RHITestFixture, DescriptorPool_Create_DSV) {
+    DescriptorPoolDesc desc = {};
+    desc.type = DescriptorHeapType::DSV;
+    desc.descriptorCount = 2;
+    desc.shaderVisible = false;
+    
+    RHIDescriptorPool* pool = GetDevice()->CreateDescriptorPool(desc);
+    if (pool != nullptr) {
+        EXPECT_EQ(pool->GetType(), DescriptorHeapType::DSV);
+        pool->Shutdown();
+        delete pool;
+    }
+}
+
+TEST_P(RHITestFixture, DescriptorPool_GetDescriptorCount) {
+    DescriptorPoolDesc desc = {};
+    desc.type = DescriptorHeapType::CBV_SRV_UAV;
+    desc.descriptorCount = 100;
+    desc.shaderVisible = false;
+    
+    RHIDescriptorPool* pool = GetDevice()->CreateDescriptorPool(desc);
+    if (pool != nullptr) {
+        EXPECT_EQ(pool->GetDescriptorCount(), 100u);
+        pool->Shutdown();
+        delete pool;
+    }
+}
+
+TEST_P(RHITestFixture, DescriptorPool_GetType) {
+    DescriptorPoolDesc desc = {};
+    desc.type = DescriptorHeapType::Sampler;
+    desc.descriptorCount = 8;
+    desc.shaderVisible = true;
+    
+    RHIDescriptorPool* pool = GetDevice()->CreateDescriptorPool(desc);
+    if (pool != nullptr) {
+        EXPECT_EQ(pool->GetType(), DescriptorHeapType::Sampler);
+        pool->Shutdown();
+        delete pool;
+    }
+}
+
+TEST_P(RHITestFixture, DescriptorPool_Shutdown) {
+    DescriptorPoolDesc desc = {};
+    desc.type = DescriptorHeapType::CBV_SRV_UAV;
+    desc.descriptorCount = 10;
+    desc.shaderVisible = false;
+    
+    RHIDescriptorPool* pool = GetDevice()->CreateDescriptorPool(desc);
+    if (pool != nullptr) {
+        pool->Shutdown();
+        delete pool;
+    }
+}
+
+TEST_P(RHITestFixture, DescriptorPool_DoubleShutdown) {
+    DescriptorPoolDesc desc = {};
+    desc.type = DescriptorHeapType::CBV_SRV_UAV;
+    desc.descriptorCount = 10;
+    desc.shaderVisible = false;
+    
+    RHIDescriptorPool* pool = GetDevice()->CreateDescriptorPool(desc);
+    if (pool != nullptr) {
+        pool->Shutdown();
+        pool->Shutdown();
+        delete pool;
+    }
+}