It("provides the step as the previous step to the hook", func() {
process := ifrit.Background(ensureStep)
Eventually(step.RunCallCount).Should(Equal(1))
Eventually(hookFactory.UsingCallCount).Should(Equal(1))
argsPrev, argsRepo := hookFactory.UsingArgsForCall(0)
Expect(argsPrev).To(Equal(step))
Expect(argsRepo).To(Equal(repo))
Eventually(process.Wait()).Should(Receive(noError()))
})
It("runs the ensured hook even if the step errors", func() {
step.RunReturns(errors.New("disaster"))
process := ifrit.Background(ensureStep)
Eventually(step.RunCallCount).Should(Equal(1))
Eventually(process.Wait()).Should(Receive(errorMatching(ContainSubstring("disaster"))))
Expect(hook.RunCallCount()).To(Equal(1))
})
It("propagates signals to the first step when first step is running", func() {
step.RunStub = func(signals <-chan os.Signal, ready chan<- struct{}) error {
close(ready)
<-signals
return errors.New("interrupted")
attempt2Step.ResultReturns(true)
var foo interface{}
destination := &foo
Expect(step.Result(destination)).To(BeTrue())
Expect(attempt2Step.ResultCallCount()).To(Equal(2))
Expect(attempt2Step.ResultArgsForCall(1)).To(Equal(destination))
})
})
})
})
Context("when attempt 1 errors, and attempt 2 succeeds", func() {
BeforeEach(func() {
attempt1Step.RunReturns(errors.New("nope"))
attempt2Step.ResultStub = successResult(true)
})
Describe("Run", func() {
var process ifrit.Process
JustBeforeEach(func() {
process = ifrit.Invoke(step)
})
It("returns nil having only run the first and second attempts", func() {
Expect(<-process.Wait()).ToNot(HaveOccurred())
Expect(attempt1Step.RunCallCount()).To(Equal(1))
Expect(attempt2Step.RunCallCount()).To(Equal(1))
inputStepFactory.UsingReturns(inputStep)
fakeFactory.GetReturns(inputStepFactory)
outputStepFactory = new(execfakes.FakeStepFactory)
outputStep = new(execfakes.FakeStep)
outputStep.ResultStub = successResult(true)
outputStepFactory.UsingReturns(outputStep)
fakeFactory.PutReturns(outputStepFactory)
dependentStepFactory = new(execfakes.FakeStepFactory)
dependentStep = new(execfakes.FakeStep)
dependentStep.ResultStub = successResult(true)
dependentStepFactory.UsingReturns(dependentStep)
fakeFactory.DependentGetReturns(dependentStepFactory)
taskStep.RunReturns(nil)
inputStep.RunReturns(nil)
outputStep.RunReturns(nil)
})
Context("constructing steps", func() {
var (
fakeDelegate *fakes.FakeBuildDelegate
fakeInputDelegate *execfakes.FakeGetDelegate
fakeExecutionDelegate *execfakes.FakeTaskDelegate
)
BeforeEach(func() {
fakeDelegate = new(fakes.FakeBuildDelegate)
fakeDelegateFactory.DelegateReturns(fakeDelegate)
Context("when the task is privileged", func() {
BeforeEach(func() {
privileged = true
})
It("constructs the task step privileged", func() {
Ω(fakeFactory.TaskCallCount()).Should(Equal(1))
_, _, _, privileged, _, _ := fakeFactory.TaskArgsForCall(0)
Ω(privileged).Should(Equal(exec.Privileged(true)))
})
})
Context("when the input succeeds", func() {
BeforeEach(func() {
inputStep.RunReturns(nil)
})
Context("when executing the task errors", func() {
disaster := errors.New("oh no!")
BeforeEach(func() {
taskStep.RunReturns(disaster)
})
It("does not run any outputs", func() {
Ω(outputStep.RunCallCount()).Should(BeZero())
})
It("finishes with error", func() {
Ω(fakeDelegate.FinishCallCount()).Should(Equal(1))
process.Signal(os.Kill)
var receivedError error
Eventually(process.Wait()).Should(Receive(&receivedError))
Ω(receivedError).ShouldNot(BeNil())
Ω(receivedError.Error()).Should(ContainSubstring(ErrInterrupted.Error()))
})
})
Context("when the step returns an error", func() {
var someError error
BeforeEach(func() {
someError = errors.New("some error")
runStep.ResultStub = successResult(false)
runStep.RunReturns(someError)
})
It("returns the error", func() {
var receivedError error
Eventually(process.Wait()).Should(Receive(&receivedError))
Ω(receivedError).ShouldNot(BeNil())
Ω(receivedError).Should(Equal(someError))
})
})
Context("result", func() {
It("is not successful", func() {
Eventually(runStep.RunCallCount).Should(Equal(1))
var receivedError error
})
It("propagates to all sources", func() {
interruptedErr := errors.New("sources failed:\ninterrupted\ninterrupted")
process.Signal(os.Interrupt)
Eventually(process.Wait()).Should(Receive(Equal(interruptedErr)))
})
})
Context("when sources fail", func() {
disasterA := errors.New("nope A")
disasterB := errors.New("nope B")
BeforeEach(func() {
outStepA.RunReturns(disasterA)
outStepB.RunReturns(disasterB)
})
It("exits with an error including the original message", func() {
var err error
Eventually(process.Wait()).Should(Receive(&err))
Ω(err.Error()).Should(ContainSubstring("nope A"))
Ω(err.Error()).Should(ContainSubstring("nope B"))
})
})
Describe("releasing", func() {
It("releases all sources", func() {
err := step.Release()
})
It("deletegates to the inner step", func() {
x := new(ExitStatus)
result := step.Result(x)
Expect(result).Should(Equal(true))
Expect(*x).Should(Equal(ExitStatus(exitCode)))
})
})
})
Describe("Run", func() {
Context("when the inner step is interrupted", func() {
BeforeEach(func() {
runStep.ResultStub = successResult(false)
runStep.RunReturns(ErrInterrupted)
})
It("propagates the error", func() {
err := step.Run(nil, nil)
Expect(err).To(Equal(ErrInterrupted))
})
})
Context("when the inner step returns any other error", func() {
BeforeEach(func() {
runStep.ResultStub = successResult(false)
runStep.RunReturns(errors.New("some error"))
})
It("swallows the error", func() {