m3_lightmeter/integration_test

M3 Lightmeter integration tests

List of executed tests:

• Purchases test
• Metering screen layout test
• e2e

Run all tests

flutter drive \
    --target=integration_test/run_all_tests.dart \
    --driver=test_driver/integration_driver.dart \
    --flavor=dev \
    --no-dds \
    --dart-define cameraStubImage=assets/camera_stub_image.jpg