1 files changed, 65 insertions, 0 deletions
diff --git a/src/tests/common/webgpu_test_fixture.h b/src/tests/common/webgpu_test_fixture.h
new file mode 100644
index 0000000..e10a2ed
--- /dev/null
+++ b/src/tests/common/webgpu_test_fixture.h
@@ -0,0 +1,65 @@
+// This file is part of the 64k demo project.
+// It provides shared WebGPU initialization for GPU tests.
+// Eliminates boilerplate and enables graceful skipping if GPU unavailable.
+
+#pragma once
+
+#include "gpu/gpu.h"
+#include "platform/platform.h"
+
+// Shared test fixture for WebGPU tests
+// Handles device/queue initialization and cleanup
+class WebGPUTestFixture {
+ public:
+  WebGPUTestFixture();
+  ~WebGPUTestFixture();
+
+  // Initialize WebGPU device and queue
+  // Returns true on success, false if GPU unavailable (test should skip)
+  bool init();
+
+  // Cleanup resources
+  void shutdown();
+
+  // Accessors
+  WGPUInstance instance() const {
+    return instance_;
+  }
+  WGPUDevice device() const {
+    return device_;
+  }
+  WGPUQueue queue() const {
+    return queue_;
+  }
+  WGPUTextureFormat format() const {
+    return WGPUTextureFormat_BGRA8Unorm;
+  }
+  GpuContext ctx() const {
+    return {device_, queue_, format()};
+  }
+
+  // Check if fixture is ready
+  bool is_initialized() const {
+    return device_ != nullptr;
+  }
+
+ private:
+  WGPUInstance instance_ = nullptr;
+  WGPUAdapter adapter_ = nullptr;
+  WGPUDevice device_ = nullptr;
+  WGPUQueue queue_ = nullptr;
+
+  // Callback state for async device request
+  struct RequestState {
+    WGPUAdapter adapter = nullptr;
+    WGPUDevice device = nullptr;
+    bool done = false;
+  };
+
+  static void adapter_callback(WGPURequestAdapterStatus status,
+                               WGPUAdapter adapter, const char* message,
+                               void* userdata);
+
+  static void device_callback(WGPURequestDeviceStatus status, WGPUDevice device,
+                              const char* message, void* userdata);
+};