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test-bash-hook

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finalize_test.go

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package finalize_test

import (

"bytes"

"fmt"

"io/ioutil"

"os"

"os/exec"

"path"

"path/filepath"

"python/finalize"

"github.com/cloudfoundry/libbuildpack"

"github.com/cloudfoundry/libbuildpack/ansicleaner"

"github.com/golang/mock/gomock"

. "github.com/onsi/ginkgo"

. "github.com/onsi/gomega"

)

//go:generate mockgen -source=finalize.go --destination=mocks_test.go --package=finalize_test

var _ = Describe("Finalize", func() {

var (

err error

buildDir string

depsDir string

depsIdx string

finalizer *finalize.Finalizer

logger *libbuildpack.Logger

buffer *bytes.Buffer

mockCtrl *gomock.Controller

mockManifest *MockManifest

mockCommand *MockCommand

mockManagePyFinder *MockManagePyFinder

)

BeforeEach(func() {

buildDir, err = ioutil.TempDir("", "python-buildpack.build.")

Expect(err).To(BeNil())

depsDir, err = ioutil.TempDir("", "python-buildpack.deps.")

Expect(err).To(BeNil())

depsIdx = "9"

Expect(os.MkdirAll(filepath.Join(depsDir, depsIdx), 0755)).To(Succeed())

buffer = new(bytes.Buffer)

logger = libbuildpack.NewLogger(ansicleaner.New(buffer))

mockCtrl = gomock.NewController(GinkgoT())

mockManifest = NewMockManifest(mockCtrl)

mockCommand = NewMockCommand(mockCtrl)

mockManagePyFinder = NewMockManagePyFinder(mockCtrl)

args := []string{buildDir, "", depsDir, depsIdx}

stager := libbuildpack.NewStager(args, logger, &libbuildpack.Manifest{})

finalizer = &finalize.Finalizer{

Stager: stager,

Manifest: mockManifest,

Log: logger,

Command: mockCommand,

ManagePyFinder: mockManagePyFinder,

}

})

AfterEach(func() {

mockCtrl.Finish()

err = os.RemoveAll(buildDir)

Expect(err).To(BeNil())

err = os.RemoveAll(depsDir)

Expect(err).To(BeNil())

os.Setenv("DISABLE_COLLECTSTATIC", "")

})

Describe("HandleCollectStatic", func() {

Context("When DISABLE_COLLECTSTATIC is set", func() {

BeforeEach(func() {

os.Setenv("DISABLE_COLLECTSTATIC", "1")

})

It("does nothing", func() {

Expect(finalizer.HandleCollectstatic()).To(Succeed())

})

})

Context("When DISABLE_COLLECTSTATIC is not set", func() {

BeforeEach(func() {

os.Setenv("DISABLE_COLLECTSTATIC", "")

})

Context("app uses Django", func() {

BeforeEach(func() {

mockCommand.EXPECT().Execute(buildDir, gomock.Any(), gomock.Any(), "pip-grep", "-s", "requirements.txt", "django", "Django").Return(nil)

mockManagePyFinder.EXPECT().FindManagePy(buildDir).Return("/foo/bar/manage.py", nil)

})

It("runs collectstatic with the most top-level manage.py", func() {

mockCommand.EXPECT().Execute(buildDir, gomock.Any(), gomock.Any(), "python", "/foo/bar/manage.py", "collectstatic", "--noinput", "--traceback").Return(nil)

Expect(finalizer.HandleCollectstatic()).To(Succeed())

})

Context("when collectstatic fails", func() {

It("prints an error", func() {

mockCommand.EXPECT().Execute(buildDir, gomock.Any(), gomock.Any(), "python", "/foo/bar/manage.py", "collectstatic", "--noinput", "--traceback").Return(fmt.Errorf("oh no it failed"))

Expect(finalizer.HandleCollectstatic()).NotTo(Succeed())

Expect(buffer.String()).To(ContainSubstring(` ! Error while running '$ python /foo/bar/manage.py collectstatic --noinput'.`))

Expect(buffer.String()).To(ContainSubstring(` See traceback above for details.`))

Expect(buffer.String()).To(ContainSubstring(` You may need to update application code to resolve this error.`))

Expect(buffer.String()).To(ContainSubstring(` Or, you can disable collectstatic for this application:`))

Expect(buffer.String()).To(ContainSubstring(` $ cf set-env <app> DISABLE_COLLECTSTATIC 1`))

Expect(buffer.String()).To(ContainSubstring(` https://devcenter.heroku.com/articles/django-assets`))

})

})

})

Context("app does not use Django", func() {

BeforeEach(func() {

mockCommand.EXPECT().Execute(buildDir, gomock.Any(), gomock.Any(), "pip-grep", "-s", "requirements.txt", "django", "Django").Return(fmt.Errorf("Not found"))

})

It("does not run anything", func() {

Expect(finalizer.HandleCollectstatic()).To(Succeed())

})

})

})

})

Describe("ReplaceDepsDirWithLiteral", func() {

var file string

runSubjectAndReadContents := func() string {

Expect(finalizer.ReplaceDepsDirWithLiteral()).To(Succeed())

contents, err := ioutil.ReadFile(file)

Expect(err).ToNot(HaveOccurred())

return string(contents)

}

Context("file at site-packages root", func() {

BeforeEach(func() {

file = filepath.Join(depsDir, depsIdx, "python", "lib", "python2.7", "site-packages", "easy-install.pth")

Expect(os.MkdirAll(path.Dir(file), 0755)).To(Succeed())

Expect(ioutil.WriteFile(file, []byte("./setuptools-32.1.0-py2.7.egg\n./pip-9.0.1-py2.7.egg\n"+depsDir+"/9/src/regcore\n"), 0644)).To(Succeed())

})

It("Converts DepsDir value to '$DEPS_DIR' string", func() {

Expect(runSubjectAndReadContents()).To(Equal("./setuptools-32.1.0-py2.7.egg\n./pip-9.0.1-py2.7.egg\nDOLLAR_DEPS_DIR/9/src/regcore\n"))

})

})

Context("file deeply nested under site-packages root", func() {

BeforeEach(func() {

file = filepath.Join(depsDir, depsIdx, "python", "lib", "python3.2", "site-packages", "something", "extra", "fred.pth")

Expect(os.MkdirAll(path.Dir(file), 0755)).To(Succeed())

Expect(ioutil.WriteFile(file, []byte(depsDir+"/9/src/bing\n./pip-9.0.1-py2.7.egg\n"+depsDir+"/9/src/regcore\n"), 0644)).To(Succeed())

})

It("Converts DepsDir value to '$DEPS_DIR' string", func() {

Expect(runSubjectAndReadContents()).To(Equal("DOLLAR_DEPS_DIR/9/src/bing\n./pip-9.0.1-py2.7.egg\nDOLLAR_DEPS_DIR/9/src/regcore\n"))

})

})

})

Describe("ReplaceLiteralWithDepsDirAtRuntime", func() {

Context("file has literal depsDir", func() {

var file string

BeforeEach(func() {

file = filepath.Join(depsDir, depsIdx, "python", "lib", "python2.7", "site-packages", "easy-install.pth")

Expect(os.MkdirAll(path.Dir(file), 0755)).To(Succeed())

Expect(ioutil.WriteFile(file, []byte("./setuptools-32.1.0-py2.7.egg\n./pip-9.0.1-py2.7.egg\nDOLLAR_DEPS_DIR/9/src/regcore\n"), 0644)).To(Succeed())

})

It("At runtime, converts the contents to the runtime depsDir", func() {

Expect(finalizer.ReplaceLiteralWithDepsDirAtRuntime()).To(Succeed())

cmd := exec.Command("bash", filepath.Join(depsDir, depsIdx, "profile.d", "python.fixeggs.sh"))

cmd.Env = append(os.Environ(), "DEPS_DIR="+depsDir)

Expect(cmd.Run()).To(Succeed())

contents, err := ioutil.ReadFile(file)

Expect(err).ToNot(HaveOccurred())

Expect(string(contents)).To(Equal("./setuptools-32.1.0-py2.7.egg\n./pip-9.0.1-py2.7.egg\n" + depsDir + "/9/src/regcore\n"))

})

})

})

})