Run tests in GitHub Actions (#426)

.github/workflows/test.yml

@@ -0,0 +1,52 @@
+name: test
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  test:
+    strategy:
+      matrix:
+        go-version: [ 1.16.x, 1.17.x ]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Go cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/go/pkg/mod
+            ~/.cache/go-build
+          key: ${{ runner.os }}-go-cache-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-cache
+      - name: Run gofmt
+        run: gofmt -d -e . 2>&1 | tee outfile && test -z "$(cat outfile)" && rm outfile
+      - name: Run golint
+        run: |
+          go install golang.org/x/lint/golint@latest
+          golint -set_exit_status ./...
+          cd _examples && golint -set_exit_status ./... && cd ..
+      - name: Run go vet
+        run: |
+          go vet ./...
+          cd _examples && go vet ./... && cd ..
+      - name: Run go test
+        run: |
+          go test -v -race -coverprofile=coverage.txt -covermode=atomic ./...
+          cd _examples && go test -v -race ./... && cd ..
+      - name: Run godog
+        run: |
+          go install ./cmd/godog
+          godog -f progress --strict
+      - name: Report on code coverage
+        if: matrix.go-version == '1.17.x'
+        uses: codecov/codecov-action@v1
+        with:
+          file: ./coverage.txt