fix(flet-test): wait for first render in counter test; robust CI diag… #7
Workflow file for this run
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| name: Flet Test (on-device) | |
| # Runs `flet test` end-to-end on every target: provisions a per-platform test | |
| # host (build pipeline in test_mode), launches the built Counter app with embedded | |
| # Python, and drives it over the socket tester channel. Unlike | |
| # macos-integration-tests.yml (host-mode screenshots) and flet-build-test.yml | |
| # (compile only), this actually runs the app on the device/emulator/simulator. | |
| on: | |
| push: | |
| branches-ignore: | |
| - main | |
| paths: | |
| - '.github/workflows/flet-test.yml' | |
| - '.fvmrc' | |
| - 'packages/flet/**' | |
| - 'packages/flet_integration_test/**' | |
| - 'sdk/python/packages/flet/**' | |
| - 'sdk/python/packages/flet-cli/**' | |
| - 'sdk/python/examples/apps/flet_test_counter/**' | |
| pull_request: | |
| paths: | |
| - '.github/workflows/flet-test.yml' | |
| - '.fvmrc' | |
| - 'packages/flet/**' | |
| - 'packages/flet_integration_test/**' | |
| - 'sdk/python/packages/flet/**' | |
| - 'sdk/python/packages/flet-cli/**' | |
| - 'sdk/python/examples/apps/flet_test_counter/**' | |
| workflow_dispatch: | |
| inputs: | |
| python_version: | |
| description: "Python version to bundle into the test app." | |
| type: string | |
| default: "3.14" | |
| # Ensure only one run per branch (PR or push), cancel older ones | |
| concurrency: | |
| group: flet-test-${{ github.workflow }}-${{ github.event.pull_request.head.ref || github.ref_name }} | |
| cancel-in-progress: true | |
| env: | |
| ROOT: "${{ github.workspace }}" | |
| SDK_PYTHON: "${{ github.workspace }}/sdk/python" | |
| SCRIPTS: "${{ github.workspace }}/.github/scripts" | |
| APP_DIR: "sdk/python/examples/apps/flet_test_counter" | |
| # Host venv (runs flet-cli + pytest). The *embedded* app runtime is built | |
| # against PYTHON_VERSION (3.14) via `--python-version`; the host stays on 3.13 | |
| # for stable test-dependency wheels (numpy/pillow/scikit-image). | |
| UV_PYTHON: "3.13" | |
| PYTHONUTF8: 1 | |
| # https://flet.dev/docs/reference/environment-variables | |
| FLET_CLI_NO_RICH_OUTPUT: 1 | |
| # Use the Flutter the setup action puts on PATH, not fvm. | |
| FLET_TEST_DISABLE_FVM: 1 | |
| PYTHON_VERSION: ${{ github.event.inputs.python_version || '3.14' }} | |
| jobs: | |
| flet-test: | |
| name: ${{ matrix.platform }} | |
| runs-on: ${{ matrix.runner }} | |
| strategy: | |
| fail-fast: false | |
| matrix: | |
| include: | |
| - platform: macos | |
| runner: macos-26 | |
| test_cmd: uv run flet test macos --python-version ${PYTHON_VERSION} --yes -v | |
| - platform: ios | |
| runner: macos-26 | |
| test_cmd: uv run flet test ios -d "$IOS_UDID" --python-version ${PYTHON_VERSION} --yes -v | |
| - platform: windows | |
| runner: windows-2025-vs2026 | |
| test_cmd: uv run flet test windows --python-version ${PYTHON_VERSION} --yes -v | |
| - platform: linux | |
| runner: ubuntu-latest | |
| test_cmd: xvfb-run -a uv run flet test linux --python-version ${PYTHON_VERSION} --yes -v | |
| - platform: android | |
| runner: ubuntu-latest | |
| # Run command lives in the emulator-runner step below. | |
| test_cmd: "" | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v6 | |
| with: | |
| fetch-depth: 0 | |
| fetch-tags: true | |
| - name: Setup uv | |
| uses: astral-sh/setup-uv@v8.2.0 | |
| - name: Patch versions | |
| shell: bash | |
| run: | | |
| source "${SCRIPTS}/update_build_version.sh" | |
| source "${SCRIPTS}/common.sh" | |
| patch_python_package_versions | |
| - name: Setup Flutter | |
| uses: kuhnroyal/flutter-fvm-config-action/setup@v3 | |
| with: | |
| path: '.fvmrc' | |
| cache: true | |
| - name: Show tool versions | |
| shell: bash | |
| run: | | |
| uv --version | |
| uv run --project sdk/python/packages/flet-cli python --version | |
| flutter --version | |
| # -------- Linux: build deps + virtual display -------- | |
| - name: Install Linux dependencies | |
| if: matrix.platform == 'linux' | |
| shell: bash | |
| run: | | |
| sudo apt-get update --allow-releaseinfo-change | |
| LINUX_DEPS="$(uv run --project sdk/python/packages/flet-cli flet --version --json | jq -r '.linux_dependencies | join(" ")')" | |
| # xvfb has no GPU; the Flutter GTK app needs Mesa's software GL | |
| # (llvmpipe) or it crashes on GL context creation (exit 79). | |
| sudo apt-get install -y --no-install-recommends \ | |
| $LINUX_DEPS xvfb libgl1-mesa-dri mesa-utils | |
| sudo apt-get clean | |
| # -------- iOS: boot a simulator, capture its UDID -------- | |
| - name: Boot iOS simulator | |
| if: matrix.platform == 'ios' | |
| shell: bash | |
| run: | | |
| UDID=$(xcrun simctl list devices available -j \ | |
| | jq -r '[.devices[][] | select(.name | startswith("iPhone"))][0].udid') | |
| if [ -z "$UDID" ] || [ "$UDID" = "null" ]; then | |
| echo "No available iPhone simulator found" >&2 | |
| xcrun simctl list devices available | |
| exit 1 | |
| fi | |
| echo "Using iOS simulator $UDID" | |
| xcrun simctl boot "$UDID" || true | |
| xcrun simctl bootstatus "$UDID" -b | |
| echo "IOS_UDID=$UDID" >> "$GITHUB_ENV" | |
| # -------- Android: enable KVM for a fast emulator -------- | |
| - name: Enable KVM | |
| if: matrix.platform == 'android' | |
| shell: bash | |
| run: | | |
| echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' \ | |
| | sudo tee /etc/udev/rules.d/99-kvm4all.rules | |
| sudo udevadm control --reload-rules | |
| sudo udevadm trigger --name-match=kvm | |
| # -------- Run: desktop + iOS (non-Android) -------- | |
| - name: Run flet test (${{ matrix.platform }}) | |
| if: matrix.platform != 'android' | |
| shell: bash | |
| working-directory: ${{ env.APP_DIR }} | |
| # Force Mesa software GL on Linux (xvfb has no GPU); harmless elsewhere. | |
| env: | |
| LIBGL_ALWAYS_SOFTWARE: "true" | |
| GALLIUM_DRIVER: llvmpipe | |
| run: ${{ matrix.test_cmd }} | |
| # -------- Linux: on failure, surface the GL renderer + the bundle's own | |
| # crash output (the test harness swallows the app's early exit-79). -------- | |
| - name: Diagnose Linux failure | |
| if: failure() && matrix.platform == 'linux' | |
| shell: bash | |
| working-directory: ${{ env.APP_DIR }} | |
| env: | |
| LIBGL_ALWAYS_SOFTWARE: "true" | |
| GALLIUM_DRIVER: llvmpipe | |
| run: | | |
| echo "::group::glxinfo (is llvmpipe active?)" | |
| xvfb-run -a glxinfo -B 2>&1 | head -30 || echo "glxinfo unavailable" | |
| echo "::endgroup::" | |
| echo "::group::Run built Linux bundle directly" | |
| BUNDLE="$(find build/flutter/build/linux -type f -name flet_test_counter | head -1)" | |
| echo "bundle: ${BUNDLE:-<not found>}" | |
| if [ -n "$BUNDLE" ]; then | |
| set +e | |
| # The bundle is a GUI event-loop app that never exits on its own; | |
| # cap it so this diagnostic can't hang the job. | |
| timeout 25 xvfb-run -a "$BUNDLE" 2>&1 | head -80 | |
| echo "bundle exit: ${PIPESTATUS[0]}" | |
| set -e | |
| fi | |
| echo "::endgroup::" | |
| # -------- Run: Android (inside the emulator) -------- | |
| - name: Run flet test (android) | |
| if: matrix.platform == 'android' | |
| uses: reactivecircus/android-emulator-runner@v2 | |
| with: | |
| api-level: 35 | |
| arch: x86_64 | |
| target: google_apis | |
| force-avd-creation: true | |
| disable-animations: true | |
| emulator-options: -no-snapshot -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim | |
| working-directory: ${{ env.APP_DIR }} | |
| # Capture only the embedded-Python + crash tags to a file (a tight | |
| # filter that won't bog down the software emulator the way a verbose | |
| # firehose does), then dump it after the run. `|| CODE=$?` guarantees | |
| # the dump runs even when the test fails (the runner's script aborts | |
| # on the first non-zero exit otherwise). | |
| script: | | |
| adb logcat -c || true | |
| adb logcat -v time \ | |
| flet.python:V python:V AndroidRuntime:E DEBUG:F libc:F '*:S' \ | |
| > /tmp/logcat.txt 2>&1 & | |
| LCPID=$! | |
| CODE=0 | |
| uv run flet test android -d emulator-5554 --python-version ${PYTHON_VERSION} --yes -v || CODE=$? | |
| kill "$LCPID" 2>/dev/null || true | |
| echo "::group::device logcat (python + crashes)" | |
| tail -n 300 /tmp/logcat.txt || true | |
| echo "::endgroup::" | |
| exit $CODE |