Add CI: auto test (#11)

* ✨ Automatically execute commands when pushing or creating a pull request

Author: masan4444

.github/workflows/ci.yml

@@ -0,0 +1,49 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - master
+    tags-ignore:
+      - v*
+    paths-ignore:
+      - 'LICENSE'
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - 'LICENSE'
+      - '**.md'
+
+jobs:
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v2
+    - name: cargo fmt
+      run: cargo fmt -- --check
+
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v2
+    - name: cargo clippy
+      run: cargo clippy -- -D warnings
+
+  unit_tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest]
+    steps:
+    - uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: stable
+    - uses: actions/checkout@v2
+    - name: Run tests
+      run: cargo test -- --skip=feature_tests