func (Focker) StageApp(writer io.Writer, buildpackDirOptional ...string) error {
buildpackDir := "/tmp/cloudfockerbuildpacks"
if len(buildpackDirOptional) > 0 {
buildpackDir = buildpackDirOptional[0]
}
buildpackRunner := stager.NewBuildpackRunner(abs(buildpackDir))
err := stager.RunBuildpack(writer, buildpackRunner)
return err
}
type TestRunner struct {
RunCalled bool
}
func (f *TestRunner) Run() error {
f.RunCalled = true
return nil
}
var _ = Describe("Stager", func() {
Describe("Running a buildpack", func() {
It("should tell a buildpack runner to run", func() {
buffer := gbytes.NewBuffer()
testrunner := new(TestRunner)
err := stager.RunBuildpack(buffer, testrunner)
Expect(testrunner.RunCalled).To(Equal(true))
Expect(err).ShouldNot(HaveOccurred())
Eventually(buffer).Should(gbytes.Say(`Running Buildpacks...`))
})
})
Describe("Getting a buildpack runner", func() {
It("should return the address of a valid buildpack runner, with a correct buildpack list", func() {
buildpackDir, _ := ioutil.TempDir(os.TempDir(), "cfocker-buildpackrunner-test")
os.Mkdir(buildpackDir+"/test-buildpack", 0755)
ioutil.WriteFile(buildpackDir+"/test-buildpack"+"/testfile", []byte("test"), 0644)
runner := stager.NewBuildpackRunner(buildpackDir)
var runnerVar *buildpackrunner.Runner
Expect(runner).Should(BeAssignableToTypeOf(runnerVar))
md5BuildpackName := fmt.Sprintf("%x", md5.Sum([]byte("test-buildpack")))