Golang SimulateStdin Examples

Example #1

File: ui_test.go Project: yingkitw/cli

	BeforeEach(func() {
		fakeLogger = new(tracefakes.FakePrinter)
	})

	Describe("Printing message to stdout with PrintCapturingNoOutput", func() {
		It("prints strings without using the TeePrinter", func() {
			bucket := gbytes.NewBuffer()

			printer := NewTeePrinter(os.Stdout)
			printer.SetOutputBucket(bucket)

			io_helpers.SimulateStdin("", func(reader io.Reader) {
				output := io_helpers.CaptureOutput(func() {
					ui := NewUI(reader, os.Stdout, printer, fakeLogger)
					ui.PrintCapturingNoOutput("Hello")
				})

				Expect("Hello").To(Equal(strings.Join(output, "")))
				Expect(bucket.Contents()).To(HaveLen(0))
			})
		})
	})

	Describe("Printing message to stdout with Say", func() {
		It("prints strings", func() {
			io_helpers.SimulateStdin("", func(reader io.Reader) {
				output := io_helpers.CaptureOutput(func() {
					ui := NewUI(reader, os.Stdout, NewTeePrinter(os.Stdout), fakeLogger)
					ui.Say("Hello")
				})

Example #2

File: ui_test.go Project: herchu/cli

	testconfig "github.com/cloudfoundry/cli/testhelpers/configuration"
	io_helpers "github.com/cloudfoundry/cli/testhelpers/io"

	. "github.com/cloudfoundry/cli/cf/terminal"
	. "github.com/cloudfoundry/cli/testhelpers/matchers"
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

var _ = Describe("UI", func() {
	Describe("Printing message to stdout with Say", func() {
		It("prints strings", func() {
			io_helpers.SimulateStdin("", func(reader io.Reader) {
				output := io_helpers.CaptureOutput(func() {
					ui := NewUI(reader)
					ui.Say("Hello")
				})

				Expect("Hello").To(Equal(strings.Join(output, "")))
			})
		})

		It("prints formatted strings", func() {
			io_helpers.SimulateStdin("", func(reader io.Reader) {
				output := io_helpers.CaptureOutput(func() {
					ui := NewUI(reader)
					ui.Say("Hello %s", "World!")
				})

				Expect("Hello World!").To(Equal(strings.Join(output, "")))
			})
		})