main_test.go

package main_test

import (
	"os/exec"

	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
	. "github.com/onsi/gomega/gbytes"
	. "github.com/onsi/gomega/gexec"
)

var (
	cliPath string
)

var _ = Describe("control-tower", func() {
	BeforeSuite(func() {
		var err error

		cliPath, err = Build("github.com/EngineerBetter/control-tower")
		Expect(err).ToNot(HaveOccurred(), "Error building source")
	})

	AfterSuite(func() {
		CleanupBuildArtifacts()
	})

	It("displays usage instructions on --help", func() {
		command := exec.Command(cliPath, "--help")
		session, err := Start(command, GinkgoWriter, GinkgoWriter)
		Expect(err).ToNot(HaveOccurred(), "Error running CLI: "+cliPath)
		Eventually(session).Should(Exit(0))
		Expect(session.Out).To(Say("Control-Tower - A CLI tool to deploy Concourse CI"))
		Expect(session.Out).To(Say("deploy, d    Deploys or updates a Concourse"))
		Expect(session.Out).To(Say("destroy, x   Destroys a Concourse"))
		Expect(session.Out).To(Say("info, i      Fetches information on a deployed environment"))
		Expect(session.Out).To(Say("maintain, m  Handles maintenance operations in control-tower"))
	})
})