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package gexec_test
import (
"io"
"io/ioutil"
"os/exec"
"syscall"
"time"
. "github.com/onsi/gomega/gbytes"
. "github.com/onsi/gomega/gexec"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Session", func() {
var command *exec.Cmd
var session *Session
var outWriter, errWriter io.Writer
BeforeEach(func() {
outWriter = nil
errWriter = nil
})
JustBeforeEach(func() {
command = exec.Command(fireflyPath)
var err error
session, err = Start(command, outWriter, errWriter)
Expect(err).ShouldNot(HaveOccurred())
})
Context("running a command", func() {
It("should start the process", func() {
Expect(command.Process).ShouldNot(BeNil())
})
It("should wrap the process's stdout and stderr with gbytes buffers", func(done Done) {
Eventually(session.Out).Should(Say("We've done the impossible, and that makes us mighty"))
Eventually(session.Err).Should(Say("Ah, curse your sudden but inevitable betrayal!"))
defer session.Out.CancelDetects()
select {
case <-session.Out.Detect("Can we maybe vote on the whole murdering people issue"):
Eventually(session).Should(Exit(0))
case <-session.Out.Detect("I swear by my pretty floral bonnet, I will end you."):
Eventually(session).Should(Exit(1))
case <-session.Out.Detect("My work's illegal, but at least it's honest."):
Eventually(session).Should(Exit(2))
}
close(done)
})
It("should satisfy the gbytes.BufferProvider interface, passing Stdout", func() {
Eventually(session).Should(Say("We've done the impossible, and that makes us mighty"))
Eventually(session).Should(Exit())
})
})
Describe("providing the exit code", func() {
It("should provide the app's exit code", func() {
Expect(session.ExitCode()).Should(Equal(-1))
Eventually(session).Should(Exit())
Expect(session.ExitCode()).Should(BeNumerically(">=", 0))
Expect(session.ExitCode()).Should(BeNumerically("<", 3))
})
})
Describe("wait", func() {
It("should wait till the command exits", func() {
Expect(session.ExitCode()).Should(Equal(-1))
Expect(session.Wait().ExitCode()).Should(BeNumerically(">=", 0))
Expect(session.Wait().ExitCode()).Should(BeNumerically("<", 3))
})
})
Describe("exited", func() {
It("should close when the command exits", func() {
Eventually(session.Exited).Should(BeClosed())
Expect(session.ExitCode()).ShouldNot(Equal(-1))
})
})
Describe("kill", func() {
It("should kill the command", func() {
session, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session.Kill()
Eventually(session).Should(Exit(128 + 9))
})
})
Describe("interrupt", func() {
It("should interrupt the command", func() {
session, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session.Interrupt()
Eventually(session).Should(Exit(128 + 2))
})
})
Describe("terminate", func() {
It("should terminate the command", func() {
session, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session.Terminate()
Eventually(session).Should(Exit(128 + 15))
})
})
Describe("signal", func() {
It("should send the signal to the command", func() {
session, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session.Signal(syscall.SIGABRT)
Eventually(session).Should(Exit(128 + 6))
})
It("should ignore sending a signal if the command did not start", func() {
session, err := Start(exec.Command("notexisting"), GinkgoWriter, GinkgoWriter)
Expect(err).To(HaveOccurred())
Expect(func() { session.Signal(syscall.SIGUSR1) }).NotTo(Panic())
})
})
Context("tracking sessions", func() {
BeforeEach(func() {
KillAndWait()
})
Describe("kill", func() {
It("should kill all the started sessions", func() {
session1, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session2, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session3, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
Kill()
Eventually(session1).Should(Exit(128 + 9))
Eventually(session2).Should(Exit(128 + 9))
Eventually(session3).Should(Exit(128 + 9))
})
It("should not track unstarted sessions", func() {
_, err := Start(exec.Command("does not exist", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).Should(HaveOccurred())
session2, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session3, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
Kill()
Eventually(session2).Should(Exit(128 + 9))
Eventually(session3).Should(Exit(128 + 9))
})
})
Describe("killAndWait", func() {
It("should kill all the started sessions and wait for them to finish", func() {
session1, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session2, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session3, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
KillAndWait()
Expect(session1).Should(Exit(128+9), "Should have exited")
Expect(session2).Should(Exit(128+9), "Should have exited")
Expect(session3).Should(Exit(128+9), "Should have exited")
})
})
Describe("terminate", func() {
It("should terminate all the started sessions", func() {
session1, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session2, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session3, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
Terminate()
Eventually(session1).Should(Exit(128 + 15))
Eventually(session2).Should(Exit(128 + 15))
Eventually(session3).Should(Exit(128 + 15))
})
})
Describe("terminateAndWait", func() {
It("should terminate all the started sessions, and wait for them to exit", func() {
session1, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session2, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session3, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
TerminateAndWait()
Expect(session1).Should(Exit(128+15), "Should have exited")
Expect(session2).Should(Exit(128+15), "Should have exited")
Expect(session3).Should(Exit(128+15), "Should have exited")
})
})
Describe("signal", func() {
It("should signal all the started sessions", func() {
session1, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session2, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session3, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
Signal(syscall.SIGABRT)
Eventually(session1).Should(Exit(128 + 6))
Eventually(session2).Should(Exit(128 + 6))
Eventually(session3).Should(Exit(128 + 6))
})
})
Describe("interrupt", func() {
It("should interrupt all the started sessions, and not wait", func() {
session1, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session2, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
session3, err := Start(exec.Command("sleep", "10000000"), GinkgoWriter, GinkgoWriter)
Expect(err).ShouldNot(HaveOccurred())
Interrupt()
Eventually(session1).Should(Exit(128 + 2))
Eventually(session2).Should(Exit(128 + 2))
Eventually(session3).Should(Exit(128 + 2))
})
})
})
Context("when the command exits", func() {
It("should close the buffers", func() {
Eventually(session).Should(Exit())
Expect(session.Out.Closed()).Should(BeTrue())
Expect(session.Err.Closed()).Should(BeTrue())
Expect(session.Out).Should(Say("We've done the impossible, and that makes us mighty"))
})
var So = It
So("this means that eventually should short circuit", func() {
t := time.Now()
failures := InterceptGomegaFailures(func() {
Eventually(session).Should(Say("blah blah blah blah blah"))
})
Expect(time.Since(t)).Should(BeNumerically("<=", 500*time.Millisecond))
Expect(failures).Should(HaveLen(1))
})
})
Context("when wrapping out and err", func() {
var (
outWriterBuffer, errWriterBuffer *Buffer
)
BeforeEach(func() {
outWriterBuffer = NewBuffer()
outWriter = outWriterBuffer
errWriterBuffer = NewBuffer()
errWriter = errWriterBuffer
})
It("should route to both the provided writers and the gbytes buffers", func() {
Eventually(session.Out).Should(Say("We've done the impossible, and that makes us mighty"))
Eventually(session.Err).Should(Say("Ah, curse your sudden but inevitable betrayal!"))
Expect(outWriterBuffer.Contents()).Should(ContainSubstring("We've done the impossible, and that makes us mighty"))
Expect(errWriterBuffer.Contents()).Should(ContainSubstring("Ah, curse your sudden but inevitable betrayal!"))
Eventually(session).Should(Exit())
Expect(outWriterBuffer.Contents()).Should(Equal(session.Out.Contents()))
Expect(errWriterBuffer.Contents()).Should(Equal(session.Err.Contents()))
})
Context("when discarding the output of the command", func() {
BeforeEach(func() {
outWriter = ioutil.Discard
errWriter = ioutil.Discard
})
It("executes succesfuly", func() {
Eventually(session).Should(Exit())
})
})
})
Describe("when the command fails to start", func() {
It("should return an error", func() {
_, err := Start(exec.Command("agklsjdfas"), nil, nil)
Expect(err).Should(HaveOccurred())
})
})
})
|
