add tests

.github/workflows/ci.yml

@@ -0,0 +1,46 @@
+name: Continuous Integration
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  check:
+    name: Lint, Format, Compile and Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@v5
+
+      - name: Setup Rust
+        id: setup-rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          components: rustfmt, clippy
+
+      - name: Install Dependencies & Build
+        id: cargo-build
+        run: cargo build --workspace --all-targets
+
+      - name: Check Format
+        id: cargo-format-check
+        run: cargo fmt -- --check
+
+      - name: Lint
+        id: cargo-lint
+        run: cargo clippy -- -D warnings
+
+      - name: Test
+        id: cargo-test
+        run: cargo test --workspace --all-targets