.travis.yml

before_install:
  # Install various build dependencies. We use `travis_retry` because `go get`
  # will occasionally fail intermittently.

  # Testify is used for assertions in the test suite.
  #
  # Unfortunately, they broke versions of Go < 1.13. so we conditionally fetch
  # and test only on newer versions of Go. We can back this conditional out
  # once we've dropped < 1.13.
  #
  # Comparing versions lexically like this is technically not safe, but I'm
  # cheating a bit by taking advantage of the fact that we only support > 1.9,
  # so comparing Go versions lexically will be safe for quite some time -- well
  # beyond the point where we back this out. `tip` also sorts after any version.
  - |
    if [[ "$TRAVIS_GO_VERSION" > "1.13" ]]; then
      travis_retry go get -u github.com/stretchr/testify/require
    fi

  # Install lint / code coverage / coveralls tooling
  - travis_retry go get -u golang.org/x/net/http2
  - travis_retry go get -u golang.org/x/tools/cmd/cover
  - travis_retry go get -u github.com/mattn/goveralls
  - travis_retry go get -u golang.org/x/lint/golint

  # Unpack and start the Stripe API stub so that the test suite can talk to it
  - |
    if [ ! -d "stripe-mock/stripe-mock_${STRIPE_MOCK_VERSION}" ]; then
      mkdir -p stripe-mock/stripe-mock_${STRIPE_MOCK_VERSION}/
      curl -L "https://github.com/stripe/stripe-mock/releases/download/v${STRIPE_MOCK_VERSION}/stripe-mock_${STRIPE_MOCK_VERSION}_linux_amd64.tar.gz" -o "stripe-mock/stripe-mock_${STRIPE_MOCK_VERSION}_linux_amd64.tar.gz"
      tar -zxf "stripe-mock/stripe-mock_${STRIPE_MOCK_VERSION}_linux_amd64.tar.gz" -C "stripe-mock/stripe-mock_${STRIPE_MOCK_VERSION}/"
    fi
  - |
    stripe-mock/stripe-mock_${STRIPE_MOCK_VERSION}/stripe-mock -https-port 12112 -strict-version-check > /dev/null &
    STRIPE_MOCK_PID=$!

  # stripe-mock must be in PATH for `scripts/test_with_stripe_mock.go` to work.
  - export PATH="${PATH}:${PWD}/stripe-mock/stripe-mock_${STRIPE_MOCK_VERSION}"

cache:
  directories:
    - stripe-mock

env:
  global:
    # If changing this number, please also change it in `testing/testing.go`.
    - STRIPE_MOCK_VERSION=0.103.0

go:
  - "1.10.x"
  - "1.11.x"
  - "1.12.x"
  - "1.13.x"
  - "1.14.x"
  - "1.15.x"
  - tip

language: go

matrix:
  allow_failures:
    - go: tip
  fast_finish: true

script:
  - |
    # See note above, but Testify broke versions < 1.13, so we only build (and
    # not test) on older versions. Drop this after we've dropped support for <
    # 1.13.
    if [[ "$TRAVIS_GO_VERSION" > "1.13" ]]; then
      make
      make coverage
    else
      make build
    fi


after_script:
  # Send code coverage report to coveralls.io
  - goveralls -service=travis-ci -coverprofile=combined.coverprofile

sudo: false