Add first test workflow

github/workflows/test.yml

@@ -0,0 +1,29 @@
+on:
+  push:
+    branches: [master]
+  pull_request:
+name: cargo test
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    name: ${{ matrix.os }} / ${{ matrix.toolchain }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        toolchain: [stable]
+        include:
+          - os: ubuntu-latest
+            toolchain: beta
+          - os: ubuntu-latest
+            toolchain: nightly
+    steps:
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.toolchain }}
+      - uses: actions/checkout@v2
+      - name: cargo test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test