test: run tests with cargo-nextest in CI

Add a nextest config with a ci profile (JUnit report) and test
workflows for GitHub and Gitea that run clippy and nextest.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.config/nextest.toml

@@ -0,0 +1,10 @@
+[profile.default]
+# Flag tests that hang (e.g. a simulation loop that never converges).
+slow-timeout = { period = "30s", terminate-after = 4 }
+
+[profile.ci]
+fail-fast = false
+failure-output = "immediate-final"
+
+[profile.ci.junit]
+path = "junit.xml"

.gitea/workflows/test.yml

@@ -0,0 +1,55 @@
+name: Test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+  CARGO_INCREMENTAL: 0
+
+jobs:
+  test:
+    name: Clippy and tests (nextest)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install system dependencies
+        run: |
+          SUDO=$(command -v sudo || true)
+          $SUDO apt-get update
+          $SUDO apt-get install -y --no-install-recommends pkg-config libasound2-dev libudev-dev libwayland-dev libxkbcommon-dev
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+
+      - name: Install cargo-nextest
+        uses: taiki-e/install-action@nextest
+
+      - name: Cache cargo
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: test-${{ hashFiles('Cargo.lock') }}
+          restore-keys: test-
+
+      - name: Clippy
+        run: cargo clippy --workspace --all-targets --locked -- -D warnings
+
+      - name: Test
+        run: cargo nextest run --workspace --locked --profile ci
+
+      - name: Upload test report
+        if: always()
+        uses: actions/upload-artifact@v3
+        with:
+          name: junit
+          path: target/nextest/ci/junit.xml

.github/workflows/test.yml

@@ -0,0 +1,47 @@
+name: Test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+  CARGO_INCREMENTAL: 0
+
+jobs:
+  test:
+    name: Clippy and tests (nextest)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends pkg-config libasound2-dev libudev-dev libwayland-dev libxkbcommon-dev
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+
+      - name: Install cargo-nextest
+        uses: taiki-e/install-action@nextest
+
+      - name: Cache cargo
+        uses: Swatinem/rust-cache@v2
+
+      - name: Clippy
+        run: cargo clippy --workspace --all-targets --locked -- -D warnings
+
+      - name: Test
+        run: cargo nextest run --workspace --locked --profile ci
+
+      - name: Upload test report
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: junit
+          path: target/nextest/ci/junit.xml