adding test for packaging an extension

integration/pack_extension_test.go

@@ -5,6 +5,8 @@ import (
 
 	"os"
 	"os/exec"
+	"os/user"
+
 	"path/filepath"
 	"testing"
 
@@ -116,4 +118,120 @@ func testPackExtension(t *testing.T, context spec.G, it spec.S) {
 		})
 	})
 
+	context("when packaging an implementation extension", func() {
+		it.Before(func() {
+			err := cargo.NewDirectoryDuplicator().Duplicate(filepath.Join("testdata", "extension-example-cnb"), extensionDir)
+			Expect(err).NotTo(HaveOccurred())
+		})
+
+		it("creates a packaged extension", func() {
+			command := exec.Command(
+				path, "pack",
+				"--extension", filepath.Join(extensionDir, "extension.toml"),
+				"--output", filepath.Join(tmpDir, "output.tgz"),
+				"--version", "some-version",
+			)
+			session, err := gexec.Start(command, buffer, buffer)
+			Expect(err).NotTo(HaveOccurred())
+			Eventually(session, "5s").Should(gexec.Exit(0), func() string { return buffer.String() })
+
+			Expect(session.Out).To(gbytes.Say("Packing some-extension-name some-version..."))
+			Expect(session.Out).To(gbytes.Say("  Executing pre-packaging script: ./scripts/build.sh"))
+			Expect(session.Out).To(gbytes.Say("    hello from the pre-packaging script"))
+			Expect(session.Out).To(gbytes.Say(fmt.Sprintf("  Building tarball: %s", filepath.Join(tmpDir, "output.tgz"))))
+			Expect(session.Out).To(gbytes.Say("    bin/detect"))
+			Expect(session.Out).To(gbytes.Say("    bin/generate"))
+			Expect(session.Out).To(gbytes.Say("    bin/run"))
+			Expect(session.Out).To(gbytes.Say("    extension.toml"))
+			Expect(session.Out).To(gbytes.Say("    generated-file"))
+
+			file, err := os.Open(filepath.Join(tmpDir, "output.tgz"))
+			Expect(err).NotTo(HaveOccurred())
+
+			u, err := user.Current()
+			Expect(err).NotTo(HaveOccurred())
+			userName := u.Username
+
+			group, err := user.LookupGroupId(u.Gid)
+			Expect(err).NotTo(HaveOccurred())
+			groupName := group.Name
+
+			contents, hdr, err := ExtractFile(file, "extension.toml")
+			Expect(err).NotTo(HaveOccurred())
+			Expect(contents).To(MatchTOML(`api = "0.7"
+
+[extension]
+  description = "some-extensin-description"
+  homepage = "some-extension-homepage"
+  id = "some-extension-id"
+  keywords = ["some-extension-keyword"]
+  name = "some-extension-name"
+  version = "some-version"
+
+  [[extension.licenses]]
+    type = "some-extension-license-type"
+    uri = "some-extension-license-uri"
+
+[metadata]
+  include-files = ["bin/generate", "bin/detect", "bin/run", "extension.toml", "generated-file"]
+  pre-package = "./scripts/build.sh"
+
+  [[metadata.configurations]]
+    build = true
+    default = "16"
+    description = "the Node.js version"
+    name = "BP_NODE_VERSION"
+
+  [metadata.default-versions]
+    node = "18.*.*"
+
+  [[metadata.dependencies]]
+    id = "some-dependency"
+    name = "Some Dependency"
+    sha256 = "shasum"
+    source = "http://some-source-url"
+    stacks = ["io.buildpacks.stacks.bionic", "org.cloudfoundry.stacks.tiny", "*"]
+    uri = "http://some-url"
+    version = "1.2.3"
+
+  [[metadata.dependencies]]
+    id = "other-dependency"
+    name = "Other Dependency"
+    sha256 = "shasum"
+    source = "http://some-source-url"
+    stacks = ["org.cloudfoundry.stacks.tiny"]
+    uri = "http://other-url"
+    version = "4.5.6"`))
+			Expect(hdr.Mode).To(Equal(int64(0644)))
+
+			contents, hdr, err = ExtractFile(file, "bin/detect")
+			Expect(err).NotTo(HaveOccurred())
+			Expect(string(contents)).To(Equal("detect-contents"))
+			Expect(hdr.Mode).To(Equal(int64(0755)))
+			Expect(hdr.Uname).To(Equal(userName))
+			Expect(hdr.Gname).To(Equal(groupName))
+
+			contents, hdr, err = ExtractFile(file, "bin/generate")
+			Expect(err).NotTo(HaveOccurred())
+			Expect(string(contents)).To(Equal("generate-contents"))
+			Expect(hdr.Mode).To(Equal(int64(0755)))
+			Expect(hdr.Uname).To(Equal(userName))
+			Expect(hdr.Gname).To(Equal(groupName))
+
+			contents, hdr, err = ExtractFile(file, "bin/run")
+			Expect(err).NotTo(HaveOccurred())
+			Expect(string(contents)).To(Equal("run-contents"))
+			Expect(hdr.Mode).To(Equal(int64(0755)))
+			Expect(hdr.Uname).To(Equal(userName))
+			Expect(hdr.Gname).To(Equal(groupName))
+
+			contents, hdr, err = ExtractFile(file, "generated-file")
+			Expect(err).NotTo(HaveOccurred())
+			Expect(string(contents)).To(Equal("hello\n"))
+			Expect(hdr.Mode).To(Equal(int64(0644)))
+			Expect(hdr.Uname).To(Equal(userName))
+			Expect(hdr.Gname).To(Equal(groupName))
+
+			Expect(filepath.Join(extensionDir, "generated-file")).NotTo(BeARegularFile())
+		})
 }

integration/testdata/extension-example-cnb/bin/detect

@@ -0,0 +1 @@
+detect-contents

integration/testdata/extension-example-cnb/bin/generate

@@ -0,0 +1 @@
+generate-contents

integration/testdata/extension-example-cnb/bin/run

@@ -0,0 +1 @@
+run-contents

integration/testdata/extension-example-cnb/extension.toml

@@ -0,0 +1,47 @@
+api = "0.7"
+
+[extension]
+  id = "some-extension-id"
+  name = "some-extension-name"
+  version = "version-string"
+  description = "some-extensin-description"
+  homepage = "some-extension-homepage"
+  keywords = [ "some-extension-keyword" ]
+
+  [[extension.licenses]]
+    type = "some-extension-license-type"
+    uri = "some-extension-license-uri"
+
+[metadata]
+  include-files = ["bin/generate", "bin/detect", "bin/run", "extension.toml", "generated-file"]
+  pre-package = "./scripts/build.sh"
+
+  [metadata.default-versions]
+    node = "18.*.*"
+
+  [[metadata.dependencies]]
+    id = "some-dependency"
+    name = "Some Dependency"
+    sha256 = "shasum"
+    stacks = ["io.buildpacks.stacks.bionic", "org.cloudfoundry.stacks.tiny", "*"]
+    uri = "http://some-url"
+    source = "http://some-source-url"
+    version = "1.2.3"
+
+  [[metadata.dependencies]]
+    id = "other-dependency"
+    name = "Other Dependency"
+    sha256 = "shasum"
+    stacks = ["org.cloudfoundry.stacks.tiny"]
+    uri = "http://other-url"
+    source = "http://some-source-url"
+    version = "4.5.6"
+
+  [[metadata.configurations]]
+    build = true
+    default = "16"
+    description = "the Node.js version"
+    name = "BP_NODE_VERSION"
+
+
+

integration/testdata/extension-example-cnb/scripts/build.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+readonly PROGDIR="$(cd "$(dirname "${0}")" && pwd)"
+
+echo "hello from the pre-packaging script"
+
+echo "hello" > "$PROGDIR/../generated-file"
+
+chmod 644 "$PROGDIR/../generated-file"