Use GitHub actions for testing (#246)

Use a GitHub action to run test on each push and pull request.
We test across a matrix covering Linux and MacOSX, and Go 1.8 to 1.15.

.github/workflows/test.yml

@@ -0,0 +1,30 @@
+on: [push, pull_request]
+name: Test
+jobs:
+ test:
+ env:
+ GOPATH: ${{ github.workspace }}
+ defaults:
+ run:
+ working-directory: ${{ env.GOPATH }}/src/github.com/${{ github.repository }}
+ strategy:
+ matrix:
+ go-version: [1.8.x, 1.9.x, 1.10.x, 1.11.x, 1.12.x, 1.13.x, 1.14.x, 1.15.x]
+ os: [ubuntu-latest, macos-latest]
+ runs-on: ${{ matrix.os }}
+ steps:
+ - name: Install Go
+ uses: actions/setup-go@v2
+ with:
+ go-version: ${{ matrix.go-version }}
+ - name: Checkout code
+ uses: actions/checkout@v2
+ with:
+ path: ${{ env.GOPATH }}/src/github.com/${{ github.repository }}
+ - name: Checkout dependencies
+ run: go get golang.org/x/xerrors
+ - name: Test
+ run: go test -v -race ./...
+ - name: Format
+ if: matrix.go-version == '1.15.x'
+ run: diff -u <(echo -n) <(gofmt -d .)