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egui/.github/workflows/rust.yml
lucasmerlin 70a01138b7 Add egui testing library (#5166)
- closes #3491 
- closes #3926

This adds a testing library to egui based on
[kittest](https://github.com/rerun-io/kittest). Kittest is a new
[AccessKit](https://github.com/AccessKit/accesskit/)-based testing
library. The api is inspired by the js
[testing-library](https://testing-library.com/) where the idea is also
to query the dom based on accessibility attributes.
We made kittest with egui in mind but it should work with any rust gui
framework with AccessKit support.

It currently has support for:
- running the egui app, frame by frame
- building the AccessKit tree
- ergonomic queries via kittest
  - via e.g. get_by_name, get_by_role
- simulating events based on the accesskit node id
- creating arbitrary events based on Harness::input_mut
- rendering screenshots via wgpu
- snapshot tests with these screenshots

A simple test looks like this: 
```rust
fn main() {
    let mut checked = false;
    let app = |ctx: &Context| {
        CentralPanel::default().show(ctx, |ui| {
            ui.checkbox(&mut checked, "Check me!");
        });
    };

    let mut harness = Harness::builder().with_size(egui::Vec2::new(200.0, 100.0)).build(app);
    
    let checkbox = harness.get_by_name("Check me!");
    assert_eq!(checkbox.toggled(), Some(Toggled::False));
    checkbox.click();
    
    harness.run();

    let checkbox = harness.get_by_name("Check me!");
    assert_eq!(checkbox.toggled(), Some(Toggled::True));

    // You can even render the ui and do image snapshot tests
    #[cfg(all(feature = "wgpu", feature = "snapshot"))]
    egui_kittest::image_snapshot(&egui_kittest::wgpu::TestRenderer::new().render(&harness), "readme_example");
}
```

~Since getting wgpu to run in ci is a hassle, I'm taking another shot at
creating a software renderer for egui (ideally without a huge dependency
like skia)~ (this didn't work as well as I hoped and it turns out in CI
you can just run tests on a mac runner which comes with a real GPU)
 
Here is a example of a failed snapshot test in ci, it will say which
snapshot failed and upload an artifact with the before / after and diff
images:

https://github.com/emilk/egui/actions/runs/11183049487/job/31090724606?pr=5166
2024-10-22 12:39:00 +02:00

254 lines
7.7 KiB
YAML

on: [push, pull_request]
name: Rust
env:
RUSTFLAGS: -D warnings
RUSTDOCFLAGS: -D warnings
NIGHTLY_VERSION: nightly-2024-09-11
jobs:
fmt-crank-check-test:
name: Format + check + test
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v4
with:
lfs: true
- uses: dtolnay/rust-toolchain@master
with:
toolchain: 1.76.0
- name: Install packages (Linux)
if: runner.os == 'Linux'
uses: awalsh128/cache-apt-pkgs-action@v1.4.2
with:
packages: libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libxkbcommon-dev libssl-dev libgtk-3-dev # libgtk-3-dev is used by rfd
version: 1.0
execute_install_scripts: true
- name: Set up cargo cache
uses: Swatinem/rust-cache@v2
- name: Rustfmt
run: cargo fmt --all -- --check
- name: Lint vertical spacing
run: ./scripts/lint.py
- name: check --all-features
run: cargo check --locked --all-features --all-targets
- name: check egui_extras --all-features
run: cargo check --locked --all-features -p egui_extras
- name: check default features
run: cargo check --locked --all-targets
- name: check --no-default-features
run: cargo check --locked --no-default-features --lib --all-targets
- name: check eframe --no-default-features
run: cargo check --locked --no-default-features --features x11 --lib -p eframe
- name: check egui_extras --no-default-features
run: cargo check --locked --no-default-features --lib -p egui_extras
- name: check epaint --no-default-features
run: cargo check --locked --no-default-features --lib -p epaint
# Regression test for https://github.com/emilk/egui/issues/4771
- name: cargo check -p test_egui_extras_compilation
run: cargo check -p test_egui_extras_compilation
- name: cargo doc --lib
run: cargo doc --lib --no-deps --all-features
- name: cargo doc --document-private-items
run: cargo doc --document-private-items --no-deps --all-features
- name: clippy
run: cargo clippy --all-targets --all-features -- -D warnings
- name: clippy release
run: cargo clippy --all-targets --all-features --release -- -D warnings
# ---------------------------------------------------------------------------
check_wasm:
name: Check wasm32 + wasm-bindgen
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@master
with:
toolchain: 1.76.0
targets: wasm32-unknown-unknown
- run: sudo apt-get update && sudo apt-get install libgtk-3-dev libatk1.0-dev
- name: Set up cargo cache
uses: Swatinem/rust-cache@v2
- name: Check wasm32 egui_demo_app
run: cargo check -p egui_demo_app --lib --target wasm32-unknown-unknown
- name: Check wasm32 egui_demo_app --all-features
run: cargo check -p egui_demo_app --lib --target wasm32-unknown-unknown --all-features
- name: Check wasm32 eframe
run: cargo check -p eframe --lib --no-default-features --features glow,persistence --target wasm32-unknown-unknown
- name: wasm-bindgen
uses: jetli/wasm-bindgen-action@v0.1.0
with:
version: "0.2.93"
- run: ./scripts/wasm_bindgen_check.sh --skip-setup
- name: clippy wasm32
run: ./scripts/clippy_wasm.sh
# requires a different toolchain from the other checks (nightly)
check_wasm_atomics:
name: Check wasm32+atomics
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v4
- run: sudo apt-get update && sudo apt-get install libgtk-3-dev libatk1.0-dev
- name: Set up cargo cache
uses: Swatinem/rust-cache@v2
- uses: dtolnay/rust-toolchain@master
with:
toolchain: ${{env.NIGHTLY_VERSION}}
targets: wasm32-unknown-unknown
components: rust-src
- name: Check wasm32+atomics eframe with wgpu
run: RUSTFLAGS='-C target-feature=+atomics' cargo +${{env.NIGHTLY_VERSION}} check -p eframe --lib --no-default-features --features wgpu --target wasm32-unknown-unknown -Z build-std=std,panic_abort
# ---------------------------------------------------------------------------
cargo-deny:
strategy:
fail-fast: false
matrix:
include:
- target: aarch64-apple-darwin
- target: aarch64-linux-android
- target: i686-pc-windows-gnu
- target: i686-pc-windows-msvc
- target: i686-unknown-linux-gnu
- target: wasm32-unknown-unknown
- target: x86_64-apple-darwin
- target: x86_64-pc-windows-gnu
- target: x86_64-pc-windows-msvc
- target: x86_64-unknown-linux-gnu
- target: x86_64-unknown-linux-musl
- target: x86_64-unknown-redox
name: cargo-deny ${{ matrix.target }}
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v4
- uses: EmbarkStudios/cargo-deny-action@v1
with:
rust-version: "1.76.0"
log-level: error
command: check
arguments: --target ${{ matrix.target }}
# ---------------------------------------------------------------------------
android:
name: android
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@master
with:
toolchain: 1.76.0
targets: aarch64-linux-android
- name: Set up cargo cache
uses: Swatinem/rust-cache@v2
- run: cargo check --features wgpu,android-native-activity --target aarch64-linux-android
working-directory: crates/eframe
# ---------------------------------------------------------------------------
ios:
name: ios
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@master
with:
toolchain: 1.76.0
targets: aarch64-apple-ios
- name: Set up cargo cache
uses: Swatinem/rust-cache@v2
# Default features are disabled because glutin doesn't compile for ios.
- run: cargo check --features wgpu --target aarch64-apple-ios --no-default-features
working-directory: crates/eframe
# ---------------------------------------------------------------------------
windows:
name: Check Windows
runs-on: windows-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@master
with:
toolchain: 1.76.0
- name: Set up cargo cache
uses: Swatinem/rust-cache@v2
- name: Check all
run: cargo check --all-targets --all-features
- name: Check hello_world
run: cargo check -p hello_world
# ---------------------------------------------------------------------------
tests:
name: Run tests
# We run the tests on macOS because it will run with a actual GPU
runs-on: macos-latest
steps:
- uses: actions/checkout@v4
with:
lfs: true
- uses: dtolnay/rust-toolchain@master
with:
toolchain: 1.76.0
- name: Set up cargo cache
uses: Swatinem/rust-cache@v2
- name: Run tests
# TODO(lucasmerlin): Enable --all-features (currently this breaks the rendering in the tests because of the `unity` feature)
run: cargo test
- name: Run doc-tests
# TODO(lucasmerlin): Enable --all-features (currently this breaks the rendering in the tests because of the `unity` feature)
run: cargo test --doc
- name: Upload artifacts
uses: actions/upload-artifact@v4
if: always()
with:
name: test-results
path: "**/tests/snapshots"