Merge pull request #2499 from Shell32-Natsu/release_script

Release program
2026-05-17 18:25:26 +00:00 · 2020-05-22 17:29:45 -07:00
parent c62a83c903 4b68425d86
commit 7de391e0d6
10 changed files with 1087 additions and 11 deletions
--- a/releasing/README.md
+++ b/releasing/README.md
@@ -112,17 +112,8 @@ The tag appears in the URL, e.g. [pluginator/v1.0.0].

 ## Release procedure

-> TODO: script what follows, so someone can enter
-> ```
-> go run ./releasing/release.go kustomize minor
-> # or:
-> # go run ./releasing/release.go api patch
-> # go run ./releasing/release.go pluginator minor
-> ```
-> The program would look at the existing remote tags,
-> confirm sanity and increment the appropriate major/minor/patch
-> component, create the right branch and tag, etc.
-> No more bash please.
+The script used to release modules is in progress. Check it in 
+`releasing/releasing` directory.

 At any given moment, the repository's master branch is
 passing all its tests and contains code one could release.
--- a/releasing/releasing/gitrunner.go
+++ b/releasing/releasing/gitrunner.go
@@ -0,0 +1,293 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+type gitRunner struct {
+	// Original git repo path, which should be current working directory
+	originalGitPath string
+	// A temporary path for worktree
+	worktreePath string
+	// Does this have worktree
+	hasWorktree bool
+}
+
+func newGitRunner(worktree bool) (gitRunner, error) {
+	gr := gitRunner{}
+	pwd, err := os.Getwd()
+	if err != nil {
+		return gr, err
+	}
+	gr.originalGitPath = pwd
+	gr.hasWorktree = worktree
+	if worktree {
+		err = gr.CreateWorktreeDir()
+		if err != nil {
+			return gr, err
+		}
+	}
+	return gr, nil
+}
+
+func (gr *gitRunner) Close() error {
+	if !gr.hasWorktree {
+		return nil
+	}
+	err := gr.DeleteWorktreeDir()
+	if err != nil {
+		return err
+	}
+	err = gr.PruneWorktree()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (gr *gitRunner) DeleteWorktreeDir() error {
+	logDebug("Deleting git worktree dir: %s", gr.worktreePath)
+	err := os.RemoveAll(gr.worktreePath)
+	if err != nil {
+		return err
+	}
+	logDebug("Deleting done")
+	return nil
+}
+
+func (gr *gitRunner) WorktreePath() (string, error) {
+	if gr.worktreePath == "" {
+		return "", fmt.Errorf("Empty worktree path")
+	}
+	return gr.worktreePath, nil
+}
+
+func (gr *gitRunner) OriginalGitPath() (string, error) {
+	if gr.originalGitPath == "" {
+		return "", fmt.Errorf("Empty git path")
+	}
+	return gr.originalGitPath, nil
+}
+
+func (gr *gitRunner) CreateWorktreeDir() error {
+	// Create temporary directory
+	temp, err := ioutil.TempDir("", "kustomize-releases")
+	if err != nil {
+		return err
+	}
+	gr.worktreePath = filepath.Join(temp, "sigs.k8s.io/kustomize")
+	err = os.MkdirAll(gr.worktreePath, 0700)
+	logDebug("Created git worktree dir: %s", gr.worktreePath)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (gr *gitRunner) CheckRemoteExistence(remote string) error {
+	path, err := gr.OriginalGitPath()
+	if err != nil {
+		return err
+	}
+	logDebug("Checking remote %s in %s", remote, path)
+	cmd := exec.Command("git", "remote")
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	logDebug("Remotes:\n%s", string(stdoutStderr))
+
+	regString := fmt.Sprintf("(?m)^\\s*%s\\s*$", remote)
+	reg := regexp.MustCompile(regString)
+	if !reg.MatchString(string(stdoutStderr)) {
+		return fmt.Errorf("Cannot find remote named %s", remote)
+	}
+	logDebug("Remote %s exists", remote)
+	return nil
+}
+
+func (gr *gitRunner) FetchTags(remote string) error {
+	logDebug("Fetching latest tags")
+	path, err := gr.OriginalGitPath()
+	if err != nil {
+		return err
+	}
+	cmd := exec.Command("git", "fetch", "-t", remote)
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	logDebug("Finished fetching")
+	return nil
+}
+
+func (gr *gitRunner) GetTags() (string, error) {
+	path, err := gr.OriginalGitPath()
+	if err != nil {
+		return "", err
+	}
+	logDebug("Getting latest tag in repo %s", path)
+	cmd := exec.Command("git", "tag", "-l")
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return "", fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	logDebug("Finished getting tags")
+	return string(stdoutStderr), nil
+}
+
+func (gr *gitRunner) CheckBranchExistence(name string) (bool, error) {
+	logDebug("Checking branch %s existence", name)
+	path, err := gr.OriginalGitPath()
+	if err != nil {
+		return false, err
+	}
+	cmd := exec.Command("git", "branch", "-a")
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return false, fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	branches := strings.Split(string(stdoutStderr), "\n")
+	for _, branch := range branches {
+		if strings.Trim(branch, " ") == "remotes/"+name {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+func (gr *gitRunner) NewBranch(name string) error {
+	logInfo("Creating new branch %s", name)
+	path, err := gr.OriginalGitPath()
+	if err != nil {
+		return err
+	}
+	upstreamBranch := "upstream/" + name
+	cmd := exec.Command("git", "branch", name, upstreamBranch)
+	exist, err := gr.CheckBranchExistence(upstreamBranch)
+	if err != nil {
+		return err
+	}
+	if !exist {
+		logInfo("Remote branch %s doesn't exist", upstreamBranch)
+		cmd = exec.Command("git", "branch", name)
+	}
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	return nil
+}
+
+func (gr *gitRunner) DeleteBranch(name string) error {
+	logDebug("Deleting branch %s", name)
+	path, err := gr.OriginalGitPath()
+	if err != nil {
+		return err
+	}
+	cmd := exec.Command("git", "branch", "-D", name)
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	logDebug("Finished deleting branch")
+	return nil
+}
+
+func (gr *gitRunner) AddWorktree(branch string) error {
+	path, err := gr.OriginalGitPath()
+	if err != nil {
+		return err
+	}
+	tempDir, err := gr.WorktreePath()
+	if err != nil {
+		return err
+	}
+	logInfo("Adding worktree %s for branch %s", tempDir, branch)
+	cmd := exec.Command("git", "worktree", "add", tempDir, branch)
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	return nil
+}
+
+func (gr *gitRunner) PruneWorktree() error {
+	path, err := gr.OriginalGitPath()
+	if err != nil {
+		return err
+	}
+	logDebug("Pruning worktree for repo %s", path)
+	cmd := exec.Command("git", "worktree", "prune")
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	logDebug("Finished pruning worktree")
+	return nil
+}
+
+func (gr *gitRunner) Merge(branch string) error {
+	logInfo("Merging %s", branch)
+	path, err := gr.WorktreePath()
+	if err != nil {
+		return err
+	}
+	logDebug("Working dir: %s", path)
+	cmd := exec.Command("git", "merge", branch)
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	return nil
+}
+
+func (gr *gitRunner) PushRelease(branch string, mod module) error {
+	logInfo("Pushing branch %s", branch)
+	path, err := gr.WorktreePath()
+	if err != nil {
+		return err
+	}
+	cmd := exec.Command("git", "push", "upstream", branch)
+	cmd.Dir = path
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+
+	logInfo("Creating tag %s", mod.Tag())
+	cmd = exec.Command(
+		"git", "tag",
+		"-a", mod.Tag(),
+		"-m", fmt.Sprintf("Release %s on branch %s", mod.Tag(), branch),
+	)
+	cmd.Dir = path
+	stdoutStderr, err = cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+
+	logInfo("Pushing tag %s", mod.Tag())
+	cmd = exec.Command("git", "push", "upstream", mod.Tag())
+	cmd.Dir = path
+	stdoutStderr, err = cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("%s %s", err.Error(), stdoutStderr)
+	}
+	return nil
+}
--- a/releasing/releasing/go.mod
+++ b/releasing/releasing/go.mod
@@ -0,0 +1,5 @@
+module sigs.k8s.io/kustomize/releasing
+
+go 1.13
+
+require github.com/spf13/cobra v1.0.0
--- a/releasing/releasing/go.sum
+++ b/releasing/releasing/go.sum
@@ -0,0 +1,141 @@
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--- a/releasing/releasing/main.go
+++ b/releasing/releasing/main.go
@@ -0,0 +1,272 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log"
+
+	"github.com/spf13/cobra"
+)
+
+var modules = [...]string{
+	"kyaml", "api", "kstatus", "cmd/config",
+	"cmd/resource", "cmd/kubectl", "pluginator", "kustomize",
+}
+
+// Enable verbose or not
+var verbose bool
+
+// Disable dry run
+var noDryRun bool
+
+// Enable module tests
+var doTest bool
+
+// === Log helper functions ===
+
+func logDebug(format string, v ...interface{}) {
+	if verbose {
+		log.Printf("DEBUG "+format, v...)
+	}
+}
+
+func logInfo(format string, v ...interface{}) {
+	log.Printf("INFO "+format, v...)
+}
+
+func logWarn(format string, v ...interface{}) {
+	log.Printf("WARN "+format, v...)
+}
+
+func logFatal(format string, v ...interface{}) {
+	log.Fatalf("FATAL "+format, v...)
+}
+
+func logFatalE(e error) {
+	log.Fatalf("FATAL %s", e.Error())
+}
+
+// === Command line commands ===
+
+var rootCmd = &cobra.Command{
+	Use: "releasing",
+	Short: `This go program is used to improve the modules releasing process in Kustomize repository.
+Note: You may need to run fixgomod.sh in the module to make the module ready to release.`,
+}
+
+func listCmdImpl() error {
+	gr, err := newGitRunner(false)
+	if err != nil {
+		return err
+	}
+	logDebug("Working directory: %s", gr.originalGitPath)
+	remote := "upstream"
+
+	err = gr.CheckRemoteExistence(remote)
+	if err != nil {
+		return err
+	}
+	err = gr.FetchTags(remote)
+	if err != nil {
+		return err
+	}
+	tags, err := gr.GetTags()
+	if err != nil {
+		return err
+	}
+
+	res := []string{} // Store result strings
+	for _, modName := range modules {
+		mod := module{
+			name: modName,
+		}
+		err = mod.UpdateVersion(tags)
+		if err != nil {
+			return err
+		}
+		res = append(res, fmt.Sprintf("%s/%s", mod.name, mod.version.String()))
+	}
+	err = gr.Close()
+	if err != nil {
+		return err
+	}
+	for _, l := range res {
+		fmt.Println(l)
+	}
+	return nil
+}
+
+var listSubCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List current version of all covered modules",
+	Run: func(cmd *cobra.Command, args []string) {
+		err := listCmdImpl()
+		if err != nil {
+			logFatalE(err)
+		}
+	},
+}
+
+func checkReleaseArgs(args []string) error {
+	if len(args) != 2 {
+		return errors.New("2 arguments are required")
+	}
+	found := false
+	for _, mod := range modules {
+		if mod == args[0] {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return fmt.Errorf("%s is not a valid module. Valid modules are %s", args[0], modules)
+	}
+	types := []string{"major", "minor", "patch"}
+	found = false
+	for _, t := range types {
+		if t == args[1] {
+			found = true
+			break
+		}
+	}
+	if !found {
+		return fmt.Errorf("%s is not a valid version type. Valid types are %s", args[1], types)
+	}
+	return nil
+}
+
+func releaseCmdImpl(args []string) error {
+	modName := args[0]
+	versionType := args[1]
+	gr, err := newGitRunner(true)
+	if err != nil {
+		return err
+	}
+	logInfo("Creating tag for module %s", modName)
+	logDebug("Working directory: %s", gr.originalGitPath)
+	remote := "upstream"
+
+	err = gr.CheckRemoteExistence(remote)
+	if err != nil {
+		return err
+	}
+	err = gr.FetchTags(remote)
+	if err != nil {
+		return err
+	}
+	tags, err := gr.GetTags()
+	if err != nil {
+		return err
+	}
+
+	gitPath, err := gr.OriginalGitPath()
+	if err != nil {
+		return err
+	}
+	mod := module{
+		name: modName,
+		path: gitPath,
+	}
+	err = mod.UpdateVersion(tags)
+	if err != nil {
+		return err
+	}
+
+	oldVersion := mod.version.String()
+	err = mod.version.Bump(versionType)
+	if err != nil {
+		return err
+	}
+	newVersion := mod.version.String()
+	logInfo("Bumping version: %s => %s", oldVersion, newVersion)
+
+	// Create branch
+	branch := fmt.Sprintf("release-%s-v%d.%d", mod.name, mod.version.major, mod.version.minor)
+	err = gr.NewBranch(branch)
+	if err != nil {
+		return err
+	}
+
+	err = gr.AddWorktree(branch)
+	if err != nil {
+		return err
+	}
+
+	err = gr.Merge("upstream/master")
+	if err != nil {
+		return err
+	}
+	// Update module path
+	worktreePath, err := gr.WorktreePath()
+	if err != nil {
+		return err
+	}
+	mod.path = worktreePath
+
+	logInfo(
+		"Releasing summary:\nDir:\t%s\nModule:\t%s %s\nBranch:\t%s\nTag:\t%s",
+		worktreePath,
+		mod.name,
+		mod.version.String(),
+		branch,
+		mod.Tag(),
+	)
+
+	// Run module tests
+	output, err := mod.RunTest()
+	if err != nil {
+		logWarn(output)
+	} else if !noDryRun {
+		logInfo("Skipping push module %s. Run with --no-dry-run to push the release.", mod.name)
+	} else {
+		err = gr.PushRelease(branch, mod)
+		if err != nil {
+			return err
+		}
+	}
+	// Clean
+	err = gr.Close()
+	if err != nil {
+		return err
+	}
+	err = gr.DeleteBranch(branch)
+	if err != nil {
+		return err
+	}
+	logInfo("Releasing for module %s completes", mod.name)
+	return nil
+}
+
+var release = &cobra.Command{
+	Use:   "release [module name] [version type]",
+	Short: "Release a new version of specified module",
+	Args: func(cmd *cobra.Command, args []string) error {
+		return checkReleaseArgs(args)
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+		err := releaseCmdImpl(args)
+		if err != nil {
+			logFatalE(err)
+		}
+	},
+}
+
+var subCmds = [...]*cobra.Command{
+	listSubCmd,
+	release,
+}
+
+// === Main function ===
+
+func main() {
+	for _, cmd := range subCmds {
+		rootCmd.AddCommand(cmd)
+	}
+	rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose output")
+	release.Flags().BoolVarP(&noDryRun, "no-dry-run", "", false, "disable dry-run")
+	release.Flags().BoolVarP(&doTest, "do-test", "", false, "run module tests before releasing")
+
+	if err := rootCmd.Execute(); err != nil {
+		logFatal(err.Error())
+	}
+}
--- a/releasing/releasing/main_test.go
+++ b/releasing/releasing/main_test.go
@@ -0,0 +1,20 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestList(t *testing.T) {
+	err := listCmdImpl()
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func TestRelease(t *testing.T) {
+	args := []string{"api", "minor"}
+	err := releaseCmdImpl(args)
+	if err != nil {
+		t.Error(err)
+	}
+}
--- a/releasing/releasing/modulemeta.go
+++ b/releasing/releasing/modulemeta.go
@@ -0,0 +1,45 @@
+package main
+
+import (
+	"os/exec"
+	"path/filepath"
+)
+
+type module struct {
+	// Module name
+	name string
+	// Module path. This path is only used for running test.
+	path string
+	// Module version
+	version moduleVersion
+}
+
+func (m *module) UpdateVersion(tags string) error {
+	v, err := newModuleVersionFromGitTags(tags, m.name)
+	if err != nil {
+		return err
+	}
+	m.version = v
+	return nil
+}
+
+func (m *module) Tag() string {
+	return m.name + "/" + m.version.String()
+}
+
+func (m *module) RunTest() (string, error) {
+	if !doTest {
+		logInfo("Tests disabled.")
+		return "", nil
+	}
+	testPath := filepath.Join(m.path, m.name)
+	logInfo("Running tests in %s...", testPath)
+	cmd := exec.Command("go", "test", "./...")
+	cmd.Dir = testPath
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return string(stdoutStderr), err
+	}
+	logInfo("Tests are successfully finished")
+	return "", nil
+}
--- a/releasing/releasing/modulemeta_test.go
+++ b/releasing/releasing/modulemeta_test.go
@@ -0,0 +1,68 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestModuleTags(t *testing.T) {
+	tags := `api/v0.1.1
+	api/v0.2.0
+	api/v0.3.0
+	api/v0.3.1
+	api/v0.3.2
+	api/v0.3.3
+	cmd/config/v0.0.1
+	cmd/config/v0.0.10
+	cmd/config/v0.0.11
+	cmd/config/v0.0.12
+	cmd/config/v0.0.13
+	cmd/config/v0.0.2
+	cmd/config/v0.0.3
+	cmd/config/v0.0.4
+	cmd/config/v0.0.5
+	cmd/config/v0.0.6
+	cmd/config/v0.0.7
+	cmd/config/v0.0.8
+	cmd/config/v0.0.9
+	cmd/config/v0.1.0
+	cmd/config/v0.1.1
+	cmd/config/v0.1.10
+	cmd/config/v0.1.11
+	cmd/config/v0.1.2
+	cmd/config/v0.1.3
+	cmd/config/v0.1.4
+	cmd/config/v0.1.5
+	cmd/config/v0.1.6
+	cmd/config/v0.1.7
+	cmd/config/v0.1.8
+	cmd/kubectl/v0.0.1
+	cmd/kubectl/v0.0.2
+	cmd/kubectl/v0.0.3
+	cmd/resource/v0.0.1
+	cmd/resource/v0.0.2
+	kstatus/v0.0.1
+	kustomize/v3.2.1
+	kustomize/v3.2.2
+	kustomize/v3.2.3
+	kustomize/v3.3.0
+	kustomize/v3.4.0
+	kustomize/v3.5.1
+	kustomize/v3.5.2
+	kustomize/v3.5.3
+	kustomize/v3.5.4
+	kustomize/v3.5.5`
+	expect := "cmd/config/v0.1.11"
+
+	m := module{
+		name: "cmd/config",
+	}
+
+	err := m.UpdateVersion(tags)
+	if err != nil {
+		t.Error(err)
+	}
+
+	if m.Tag() != expect {
+		t.Errorf("Tag %s doesn't match expected %s", m.Tag(), expect)
+	}
+}
--- a/releasing/releasing/moduleversion.go
+++ b/releasing/releasing/moduleversion.go
@@ -0,0 +1,97 @@
+package main
+
+import (
+	"fmt"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+type moduleVersion struct {
+	major int
+	minor int
+	patch int
+}
+
+func (v *moduleVersion) String() string {
+	return fmt.Sprintf("v%d.%d.%d", v.major, v.minor, v.patch)
+}
+
+func (v *moduleVersion) Bump(t string) error {
+	if t == "major" {
+		v.major++
+		v.minor = 0
+		v.patch = 0
+	} else if t == "minor" {
+		v.minor++
+		v.patch = 0
+	} else if t == "patch" {
+		v.patch++
+	} else {
+		return fmt.Errorf("Invalid version type: %s", t)
+	}
+	return nil
+}
+
+func newModuleVersionFromString(vs string) (moduleVersion, error) {
+	v := moduleVersion{}
+	if len(vs) < 1 {
+		return v, fmt.Errorf("Invalid version string %s", vs)
+	}
+	if vs[0] == 'v' {
+		vs = vs[1:]
+	}
+	versions := strings.Split(vs, ".")
+	if len(versions) != 3 {
+		return v, fmt.Errorf("Invalid version string %s", vs)
+	}
+	major, err := strconv.Atoi(versions[0])
+	if err != nil {
+		return v, err
+	}
+	minor, err := strconv.Atoi(versions[1])
+	if err != nil {
+		return v, err
+	}
+	patch, err := strconv.Atoi(versions[2])
+	if err != nil {
+		return v, err
+	}
+	v = moduleVersion{
+		major: major,
+		minor: minor,
+		patch: patch,
+	}
+
+	return v, nil
+}
+
+func newModuleVersionFromGitTags(tags, modName string) (moduleVersion, error) {
+	// Search for module tag
+	regString := fmt.Sprintf("(?m)^\\s*%s/v(\\d+\\.){2}\\d+\\s*$", modName)
+	reg := regexp.MustCompile(regString)
+	modTagsString := reg.FindAllString(tags, -1)
+	logDebug("Tags for module %s:\n%s", modName, modTagsString)
+	var versions []moduleVersion
+	for _, tag := range modTagsString {
+		tag = tag[len(modName)+2:]
+		v, err := newModuleVersionFromString(tag)
+		if err != nil {
+			return moduleVersion{}, err
+		}
+
+		versions = append(versions, v)
+	}
+	// Sort to find latest tag
+	sort.Slice(versions, func(i, j int) bool {
+		if versions[i].major == versions[j].major && versions[i].minor == versions[j].minor {
+			return versions[i].patch > versions[j].patch
+		} else if versions[i].major == versions[j].major {
+			return versions[i].minor > versions[j].minor
+		} else {
+			return versions[i].major > versions[j].major
+		}
+	})
+	return versions[0], nil
+}
--- a/releasing/releasing/moduleversion_test.go
+++ b/releasing/releasing/moduleversion_test.go
@@ -0,0 +1,144 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestVersionFromAndToString(t *testing.T) {
+	vs := "1.1.1"
+	expect := "v1.1.1"
+	v, err := newModuleVersionFromString(vs)
+	if err != nil {
+		t.Error(err)
+	}
+	if v.String() != expect {
+		t.Errorf("%s doesn't match expected %s", v.String(), expect)
+	}
+
+	vs = "v0.0.0"
+	expect = "v0.0.0"
+	v, err = newModuleVersionFromString(vs)
+	if err != nil {
+		t.Error(err)
+	}
+	if v.String() != expect {
+		t.Errorf("%s doesn't match expected %s", v.String(), expect)
+	}
+
+	vs = "v0.0"
+	v, err = newModuleVersionFromString(vs)
+	if err == nil {
+		t.Errorf("%s should be invalid", vs)
+	}
+
+	vs = ""
+	v, err = newModuleVersionFromString(vs)
+	if err == nil {
+		t.Errorf("%s should be invalid", vs)
+	}
+}
+
+func TestVersionFromGitTags(t *testing.T) {
+	tags := `api/v0.1.1
+	api/v0.2.0
+	api/v0.3.0
+	api/v0.3.1
+	api/v0.3.2
+	api/v0.3.3
+	cmd/config/v0.0.1
+	cmd/config/v0.0.10
+	cmd/config/v0.0.11
+	cmd/config/v0.0.12
+	cmd/config/v0.0.13
+	cmd/config/v0.0.2
+	cmd/config/v0.0.3
+	cmd/config/v0.0.4
+	cmd/config/v0.0.5
+	cmd/config/v0.0.6
+	cmd/config/v0.0.7
+	cmd/config/v0.0.8
+	cmd/config/v0.0.9
+	cmd/config/v0.1.0
+	cmd/config/v0.1.1
+	cmd/config/v0.1.10
+	cmd/config/v0.1.11
+	cmd/config/v0.1.2
+	cmd/config/v0.1.3
+	cmd/config/v0.1.4
+	cmd/config/v0.1.5
+	cmd/config/v0.1.6
+	cmd/config/v0.1.7
+	cmd/config/v0.1.8
+	cmd/kubectl/v0.0.1
+	cmd/kubectl/v0.0.2
+	cmd/kubectl/v0.0.3
+	cmd/resource/v0.0.1
+	cmd/resource/v0.0.2
+	kstatus/v0.0.1
+	kustomize/v3.2.1
+	kustomize/v3.2.2
+	kustomize/v3.2.3
+	kustomize/v3.3.0
+	kustomize/v3.4.0
+	kustomize/v3.5.1
+	kustomize/v3.5.2
+	kustomize/v3.5.3
+	kustomize/v3.5.4
+	kustomize/v3.5.5`
+	expect := "v0.1.11"
+
+	v, err := newModuleVersionFromGitTags(tags, "cmd/config")
+	if err != nil {
+		t.Error(err)
+	}
+	if v.String() != expect {
+		t.Errorf("%s doesn't match expected %s", v.String(), expect)
+	}
+}
+
+func TestVersionBumpPatch(t *testing.T) {
+	v := moduleVersion{0, 1, 1}
+	expect := "v0.1.2"
+	err := v.Bump("patch")
+	if err != nil {
+		t.Error(err)
+	}
+
+	if v.String() != expect {
+		t.Errorf("%s doesn't match expected %s", v.String(), expect)
+	}
+}
+
+func TestVersionBumpMinor(t *testing.T) {
+	v := moduleVersion{0, 1, 1}
+	expect := "v0.2.0"
+	err := v.Bump("minor")
+	if err != nil {
+		t.Error(err)
+	}
+
+	if v.String() != expect {
+		t.Errorf("%s doesn't match expected %s", v.String(), expect)
+	}
+}
+
+func TestVersionBumpMajor(t *testing.T) {
+	v := moduleVersion{0, 1, 1}
+	expect := "v1.0.0"
+	err := v.Bump("major")
+	if err != nil {
+		t.Error(err)
+	}
+
+	if v.String() != expect {
+		t.Errorf("%s doesn't match expected %s", v.String(), expect)
+	}
+}
+
+func TestVersionBumpError(t *testing.T) {
+	v := moduleVersion{}
+	err := v.Bump("unknown")
+	if err == nil {
+		t.Errorf("Invalid bumping type should have error")
+	}
+}