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Testing

gRPC-Web Testing: Protobuf Mocking, buf CLI, and Browser Integration Tests

gRPC-Web brings protocol buffer-based communication to browser clients, but testing it requires tools at every layer: buf for schema validation, gomock for server unit tests, grpc-web-fake for browser mocks, and Playwright fetch interception for end-to-end tests. This guide covers all of them. gRPC-Web

Testing

WebXR API Testing with Playwright and Mock Devices

WebXR applications are notoriously hard to test because they require browser APIs that only activate with real hardware. This guide shows how to use Playwright's WebXR emulation to test immersive sessions, controller input, hit testing, and XRSession lifecycle — all in CI without a headset. WebXR brings immersive experiences