})
})
Describe("ScaleApp", func() {
It("scales a Docker App", func() {
desiredLRPs := []receptor.DesiredLRPResponse{
{ProcessGuid: "americano-app", Instances: 1},
}
fakeReceptorClient.DesiredLRPsReturns(desiredLRPs, nil)
instanceCount := 25
err := appRunner.ScaleApp("americano-app", instanceCount)
Expect(err).NotTo(HaveOccurred())
Expect(fakeReceptorClient.UpdateDesiredLRPCallCount()).To(Equal(1))
processGuid, updateRequest := fakeReceptorClient.UpdateDesiredLRPArgsForCall(0)
Expect(processGuid).To(Equal("americano-app"))
Expect(*updateRequest.Instances).To(Equal(instanceCount))
})
It("returns errors if the app is NOT already started", func() {
desiredLRPs := []receptor.DesiredLRPResponse{
{ProcessGuid: "americano-app", Instances: 1},
}
fakeReceptorClient.DesiredLRPsReturns(desiredLRPs, nil)
err := appRunner.ScaleApp("app-not-running", 15)
Expect(err).To(MatchError("app-not-running is not started."))
Expect(fakeReceptorClient.DesiredLRPsCallCount()).To(Equal(1))
})