Add GitHub Actions

.github/workflows/go.yml

@@ -0,0 +1,72 @@
+name: Test
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+jobs:
+  go:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go: ["1.17"]
+        path: ["", "examples"]
+    name: Go ${{ matrix.go }} ${{ matrix.path }}
+    steps:
+      - name: Setup go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup Go modules cache
+        id: cache-go-module
+        uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-gomod-${{ matrix.path }}-${{ hashFiles('go.sum') }}-
+          restore-keys: |
+            ${{ runner.os }}-gomod-
+
+      - name: Setup Go build cache
+        id: cache-go-build
+        uses: actions/cache@v2
+        with:
+          path: ~/.cache/go-build
+          key: ${{ runner.os }}-gobuild-${{ matrix.path }}-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-gobuild-
+
+      - name: Download dependencies
+        working-directory: ${{ matrix.path }}
+        if: steps.cache-go-module.outputs.cache-hit != 'true'
+        run: go mod download
+
+      - name: Verify go modules up to date
+        working-directory: ${{ matrix.path }}
+        run: |
+          set -ex
+          go mod tidy
+          [ -z "$(git diff -- go.{mod,sum})" ] # Check there are no changes!
+
+      - name: Test
+        working-directory: ${{ matrix.path }}
+        run: go test ./...
+
+      - name: Lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.41
+          skip-go-installation: true
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          only-new-issues: false
+          skip-pkg-cache: true
+          skip-build-cache: true
+          args: --timeout=10m
+          working-directory: ${{ matrix.path }}