Adds integration tests for Rake CNB

- Adds Rake to order grouping

Co-authored-by: Frankie Gallina-Jones <frankieg@vmware.com>

buildpack.toml

@@ -121,3 +121,28 @@ api = "0.2"
     id = "paketo-buildpacks/procfile"
     version = "1.4.0"
     optional = true
+
+[[order]]
+
+  [[order.group]]
+    id = "paketo-community/mri"
+    version = "0.0.160"
+
+  [[order.group]]
+    id = "paketo-community/bundler"
+    version = "0.0.150"
+    optional = true
+
+  [[order.group]]
+    id = "paketo-community/bundle-install"
+    version = "0.0.57"
+    optional = true
+
+  [[order.group]]
+    id = "paketo-community/rake"
+    version = "0.0.3"
+
+  [[order.group]]
+    id = "paketo-buildpacks/procfile"
+    version = "1.4.0"
+    optional = true

integration/init_test.go

@@ -36,6 +36,7 @@ func TestIntegration(t *testing.T) {
 	suite("Passenger", testPassenger)
 	suite("Puma", testPuma)
 	suite("Rackup", testRackup)
+	suite("Rake", testRake)
 	suite("Thin", testThin)
 	suite("Unicorn", testUnicorn)
 	suite.Run(t)

integration/rake_test.go

@@ -0,0 +1,151 @@
+package integration_test
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/paketo-buildpacks/occam"
+	"github.com/sclevine/spec"
+
+	. "github.com/onsi/gomega"
+	. "github.com/paketo-buildpacks/occam/matchers"
+)
+
+func testRake(t *testing.T, context spec.G, it spec.S) {
+	var (
+		Expect     = NewWithT(t).Expect
+		Eventually = NewWithT(t).Eventually
+
+		pack   occam.Pack
+		docker occam.Docker
+	)
+
+	it.Before(func() {
+		pack = occam.NewPack()
+		docker = occam.NewDocker()
+	})
+
+	context("when building a rake container", func() {
+		var (
+			image     occam.Image
+			container occam.Container
+
+			name   string
+			source string
+		)
+
+		it.Before(func() {
+			var err error
+			name, err = occam.RandomName()
+			Expect(err).NotTo(HaveOccurred())
+		})
+
+		it.After(func() {
+			Expect(docker.Container.Remove.Execute(container.ID)).To(Succeed())
+			Expect(docker.Image.Remove.Execute(image.ID)).To(Succeed())
+			Expect(docker.Volume.Remove.Execute(occam.CacheVolumeNames(name))).To(Succeed())
+			Expect(os.RemoveAll(source)).To(Succeed())
+		})
+
+		context("uses the rake gem", func() {
+			it("creates a working OCI image", func() {
+				var err error
+				source, err = occam.Source(filepath.Join("testdata", "rake"))
+				Expect(err).NotTo(HaveOccurred())
+
+				var logs fmt.Stringer
+				image, logs, err = pack.WithNoColor().Build.
+					WithBuildpacks(rubyBuildpack).
+					WithNoPull().
+					Execute(name, source)
+				Expect(err).NotTo(HaveOccurred(), logs.String())
+
+				container, err = docker.Container.Run.Execute(image.ID)
+				Expect(err).NotTo(HaveOccurred())
+
+				rLogs := func() fmt.Stringer {
+					rakeLogs, err := docker.Container.Logs.Execute(container.ID)
+					Expect(err).NotTo(HaveOccurred())
+					return rakeLogs
+				}
+
+				Eventually(rLogs).Should(ContainSubstring("I am a rake task"))
+
+				Expect(logs).To(ContainLines(ContainSubstring("MRI Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("Bundler Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("Bundle Install Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("Rake Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("bundle exec rake")))
+			})
+		})
+
+		context("does not use rake gem", func() {
+			it("creates a working OCI image", func() {
+				var err error
+				source, err = occam.Source(filepath.Join("testdata", "rake_no_gem"))
+				Expect(err).NotTo(HaveOccurred())
+
+				var logs fmt.Stringer
+				image, logs, err = pack.WithNoColor().Build.
+					WithBuildpacks(rubyBuildpack).
+					WithNoPull().
+					Execute(name, source)
+				Expect(err).NotTo(HaveOccurred(), logs.String())
+
+				container, err = docker.Container.Run.Execute(image.ID)
+				Expect(err).NotTo(HaveOccurred())
+
+				rLogs := func() fmt.Stringer {
+					rakeLogs, err := docker.Container.Logs.Execute(container.ID)
+					Expect(err).NotTo(HaveOccurred())
+					return rakeLogs
+				}
+
+				Eventually(rLogs).Should(ContainSubstring("I am a rake task"))
+
+				Expect(logs).To(ContainLines(ContainSubstring("MRI Buildpack")))
+				Expect(logs).NotTo(ContainLines(ContainSubstring("Bundler Buildpack")))
+				Expect(logs).NotTo(ContainLines(ContainSubstring("Bundle Install Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("Rake Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("rake")))
+			})
+		})
+
+		context("when there is a Procfile", func() {
+			it("creates a working OCI image that uses the start command from", func() {
+				var err error
+				source, err = occam.Source(filepath.Join("testdata", "rake"))
+				Expect(err).NotTo(HaveOccurred())
+				Expect(ioutil.WriteFile(filepath.Join(source, "Procfile"), []byte("web: bundle exec rake proc"), 0644)).To(Succeed())
+
+				var logs fmt.Stringer
+				image, logs, err = pack.WithNoColor().Build.
+					WithBuildpacks(rubyBuildpack).
+					WithNoPull().
+					Execute(name, source)
+				Expect(err).NotTo(HaveOccurred(), logs.String())
+
+				container, err = docker.Container.Run.Execute(image.ID)
+				Expect(err).NotTo(HaveOccurred())
+
+				rLogs := func() fmt.Stringer {
+					rakeLogs, err := docker.Container.Logs.Execute(container.ID)
+					Expect(err).NotTo(HaveOccurred())
+					return rakeLogs
+				}
+
+				Eventually(rLogs).Should(ContainSubstring("I am the proc rake task"))
+
+				Expect(logs).To(ContainLines(ContainSubstring("MRI Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("Bundler Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("Bundle Install Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("Rake Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("Procfile Buildpack")))
+				Expect(logs).To(ContainLines(ContainSubstring("bundle exec rake proc")))
+			})
+		})
+	})
+}

integration/testdata/rake/Gemfile

@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+ruby '~> 2.0'
+
+gem 'rake'

integration/testdata/rake/Rakefile

@@ -0,0 +1,9 @@
+task :simple do
+  puts "I am a rake task"
+end
+
+task :default => [:simple]
+
+task :proc do
+  puts "I am the proc rake task"
+end

integration/testdata/rake_no_gem/Rakefile

@@ -0,0 +1,5 @@
+task :simple do
+  puts "I am a rake task"
+end
+
+task :default => [:simple]