1 files changed, 54 insertions, 0 deletions
diff --git a/src/tests/webgpu_test_fixture.h b/src/tests/webgpu_test_fixture.h
new file mode 100644
index 0000000..2c700a4
--- /dev/null
+++ b/src/tests/webgpu_test_fixture.h
@@ -0,0 +1,54 @@
+// 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 "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; }
+
+  // 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);
+};