CI: run tests

.github/workflows/test.yaml

@@ -0,0 +1,29 @@
+name: test
+
+on:
+  push:
+    branches: [ main ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  tests:
+    name: AoC 2024
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: Swatinem/rust-cache@v2
+    - name: setup toolchain
+      uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+
+    - name: cargo test
+      run: cargo test --all-features
+
+    - name: rustfmt
+      run: cargo fmt --all -- --check
+
+    - name: clippy
+      run: cargo clippy --all --all-features --tests -- -D warnings