refactor: various cleanups (#18)

.golangci.yaml

@@ -0,0 +1,27 @@
+linters:
+  presets:
+    - bugs
+    - error
+    - import
+    - metalinter
+    - module
+    - unused
+
+  enable:
+    - testifylint
+
+  disable:
+    # preset error
+    # These should probably be cleaned up at some point if we want to publish part of this as a library.
+    - err113 # Very annoying to define static errors everywhere
+    - wrapcheck # Very annoying to wrap errors everywhere
+    # preset import
+    - depguard
+
+linters-settings:
+  gci:
+    sections:
+      - standard
+      - default
+      - localmodule
+

action.yml

@@ -12,14 +12,19 @@ inputs:
     description: 'GitHub token for creating and grooming release PRs, defaults to using secrets.GITHUB_TOKEN'
     required: false
     default: ${{ github.token }}
+  extra-files:
+    description: 'List of files that are scanned for version references.'
+    required: false
+    default: ""
 outputs: {}
 runs:
   using: 'docker'
-  image: ghcr.io/apricote/releaser-pleaser:v0.1.0
+  image: ghcr.io/apricote/releaser-pleaser:v0.1.0 # x-releaser-pleaser-version
   args:
     - run
     - --forge=github
     - --branch=${{ inputs.branch }}
+    - --extra-files="${{ inputs.extra-files }}"
   env:
     GITHUB_TOKEN: ${{ inputs.token }}
     GITHUB_USER: "oauth2"

changelog.go

@@ -3,14 +3,8 @@ package rp
 import (
 	"bytes"
 	_ "embed"
-	"fmt"
 	"html/template"
-	"io"
 	"log"
-	"os"
-	"regexp"
-
-	"github.com/go-git/go-git/v5"
 )
 
 const (
@@ -20,8 +14,6 @@ const (
 
 var (
 	changelogTemplate *template.Template
-
-	headerRegex = regexp.MustCompile(`^# Changelog\n`)
 )
 
 //go:embed changelog.md.tpl
@@ -35,60 +27,6 @@ func init() {
 	}
 }
 
-func UpdateChangelogFile(wt *git.Worktree, newEntry string) error {
-	file, err := wt.Filesystem.OpenFile(ChangelogFile, os.O_RDWR|os.O_CREATE, 0644)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-
-	content, err := io.ReadAll(file)
-	if err != nil {
-		return err
-	}
-
-	headerIndex := headerRegex.FindIndex(content)
-	if headerIndex == nil && len(content) != 0 {
-		return fmt.Errorf("unexpected format of CHANGELOG.md, header does not match")
-	}
-	if headerIndex != nil {
-		// Remove the header from the content
-		content = content[headerIndex[1]:]
-	}
-
-	err = file.Truncate(0)
-	if err != nil {
-		return err
-	}
-	_, err = file.Seek(0, io.SeekStart)
-	if err != nil {
-		return err
-	}
-
-	_, err = file.Write([]byte(ChangelogHeader + "\n\n" + newEntry))
-	if err != nil {
-		return err
-	}
-
-	_, err = file.Write(content)
-	if err != nil {
-		return err
-	}
-
-	// Close file to make sure it is written to disk.
-	err = file.Close()
-	if err != nil {
-		return err
-	}
-
-	_, err = wt.Add(ChangelogFile)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
 func NewChangelogEntry(commits []AnalyzedCommit, version, link, prefix, suffix string) (string, error) {
 	features := make([]AnalyzedCommit, 0)
 	fixes := make([]AnalyzedCommit, 0)

changelog_test.go

@@ -1,99 +1,15 @@
 package rp
 
 import (
-	"io"
 	"testing"
 
-	"github.com/go-git/go-git/v5"
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-
-	"github.com/apricote/releaser-pleaser/internal/testutils"
 )
 
 func ptr[T any](input T) *T {
 	return &input
 }
 
-func TestUpdateChangelogFile(t *testing.T) {
-	tests := []struct {
-		name            string
-		repoFn          testutils.Repo
-		entry           string
-		expectedContent string
-		wantErr         assert.ErrorAssertionFunc
-	}{
-		{
-			name:            "empty repo",
-			repoFn:          testutils.WithTestRepo(),
-			entry:           "## v1.0.0\n",
-			expectedContent: "# Changelog\n\n## v1.0.0\n",
-			wantErr:         assert.NoError,
-		},
-		{
-			name: "repo with well-formatted changelog",
-			repoFn: testutils.WithTestRepo(testutils.WithCommit("feat: add changelog", testutils.WithFile(ChangelogFile, `# Changelog
-
-## v0.0.1
-
-- Bazzle
-
-## v0.1.0
-
-### Bazuuum
-`))),
-			entry: "## v1.0.0\n\n- Version 1, juhu.\n",
-			expectedContent: `# Changelog
-
-## v1.0.0
-
-- Version 1, juhu.
-
-## v0.0.1
-
-- Bazzle
-
-## v0.1.0
-
-### Bazuuum
-`,
-			wantErr: assert.NoError,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			repo := tt.repoFn(t)
-			wt, err := repo.Worktree()
-			require.NoError(t, err, "failed to get worktree")
-
-			err = UpdateChangelogFile(wt, tt.entry)
-			if !tt.wantErr(t, err) {
-				return
-			}
-
-			wtStatus, err := wt.Status()
-			require.NoError(t, err, "failed to get worktree status")
-
-			assert.Len(t, wtStatus, 1, "worktree status does not have the expected entry number")
-
-			changelogFileStatus := wtStatus.File(ChangelogFile)
-
-			assert.Equal(t, git.Unmodified, changelogFileStatus.Worktree, "unexpected file status in worktree")
-			assert.Equal(t, git.Added, changelogFileStatus.Staging, "unexpected file status in staging")
-
-			changelogFile, err := wt.Filesystem.Open(ChangelogFile)
-			require.NoError(t, err)
-			defer changelogFile.Close()
-
-			changelogFileContent, err := io.ReadAll(changelogFile)
-			require.NoError(t, err)
-
-			assert.Equal(t, tt.expectedContent, string(changelogFileContent))
-		})
-	}
-}
-
 func Test_NewChangelogEntry(t *testing.T) {
 	type args struct {
 		analyzedCommits []AnalyzedCommit

cmd/rp/cmd/run.go

@@ -1,6 +1,8 @@
 package cmd
 
 import (
+	"strings"
+
 	"github.com/spf13/cobra"
 
 	rp "github.com/apricote/releaser-pleaser"
@@ -13,10 +15,11 @@ var runCmd = &cobra.Command{
 }
 
 var (
-	flagForge  string
-	flagBranch string
-	flagOwner  string
-	flagRepo   string
+	flagForge      string
+	flagBranch     string
+	flagOwner      string
+	flagRepo       string
+	flagExtraFiles string
 )
 
 func init() {
@@ -28,6 +31,7 @@ func init() {
 	runCmd.PersistentFlags().StringVar(&flagBranch, "branch", "main", "")
 	runCmd.PersistentFlags().StringVar(&flagOwner, "owner", "", "")
 	runCmd.PersistentFlags().StringVar(&flagRepo, "repo", "", "")
+	runCmd.PersistentFlags().StringVar(&flagExtraFiles, "extra-files", "", "")
 }
 
 func run(cmd *cobra.Command, _ []string) error {
@@ -47,9 +51,9 @@ func run(cmd *cobra.Command, _ []string) error {
 		BaseBranch: flagBranch,
 	}
 
-	switch flagForge {
-	//case "gitlab":
-	//f = rp.NewGitLab(forgeOptions)
+	switch flagForge { // nolint:gocritic // Will become a proper switch once gitlab is added
+	// case "gitlab":
+	// f = rp.NewGitLab(forgeOptions)
 	case "github":
 		logger.DebugContext(ctx, "using forge GitHub")
 		forge = rp.NewGitHub(logger, &rp.GitHubOptions{
@@ -59,7 +63,31 @@ func run(cmd *cobra.Command, _ []string) error {
 		})
 	}
 
-	releaserPleaser := rp.New(forge, logger, flagBranch, rp.NewConventionalCommitsParser(), rp.SemVerNextVersion)
+	extraFiles := parseExtraFiles(flagExtraFiles)
+
+	releaserPleaser := rp.New(
+		forge,
+		logger,
+		flagBranch,
+		rp.NewConventionalCommitsParser(),
+		rp.SemVerNextVersion,
+		extraFiles,
+		[]rp.Updater{&rp.GenericUpdater{}},
+	)
 
 	return releaserPleaser.Run(ctx)
 }
+
+func parseExtraFiles(input string) []string {
+	lines := strings.Split(input, "\n")
+
+	extraFiles := make([]string, 0, len(lines))
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if len(line) > 0 {
+			extraFiles = append(extraFiles, line)
+		}
+	}
+
+	return extraFiles
+}

forge.go

@@ -19,7 +19,7 @@ const (
 	GitHubPerPageMax    = 100
 	GitHubPRStateOpen   = "open"
 	GitHubPRStateClosed = "closed"
-	GitHubEnvAPIToken   = "GITHUB_TOKEN"
+	GitHubEnvAPIToken   = "GITHUB_TOKEN" // nolint:gosec // Not actually a hardcoded credential
 	GitHubEnvUsername   = "GITHUB_USER"
 	GitHubEnvRepository = "GITHUB_REPOSITORY"
 	GitHubLabelColor    = "dedede"

go.mod

@@ -4,7 +4,6 @@ go 1.23.0
 
 require (
 	github.com/blang/semver/v4 v4.0.0
-	github.com/go-git/go-billy/v5 v5.5.0
 	github.com/go-git/go-git/v5 v5.12.0
 	github.com/google/go-github/v63 v63.0.0
 	github.com/leodido/go-conventionalcommits v0.12.0
@@ -17,11 +16,12 @@ require (
 	dario.cat/mergo v1.0.1 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/ProtonMail/go-crypto v1.0.0 // indirect
-	github.com/cloudflare/circl v1.3.9 // indirect
+	github.com/cloudflare/circl v1.4.0 // indirect
 	github.com/cyphar/filepath-securejoin v0.3.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
+	github.com/go-git/go-billy/v5 v5.5.0 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect

go.sum

@@ -15,6 +15,8 @@ github.com/bwesterb/go-ristretto v1.2.3/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7N
 github.com/cloudflare/circl v1.3.3/go.mod h1:5XYMA4rFBvNIrhs50XuiBJ15vF2pZn4nnUKZrLbUZFA=
 github.com/cloudflare/circl v1.3.9 h1:QFrlgFYf2Qpi8bSpVPK1HBvWpx16v/1TZivyo7pGuBE=
 github.com/cloudflare/circl v1.3.9/go.mod h1:PDRU+oXvdD7KCtgKxW95M5Z8BpSCJXQORiZFnBQS5QU=
+github.com/cloudflare/circl v1.4.0 h1:BV7h5MgrktNzytKmWjpOtdYrf0lkkbF8YMlBGPhJQrY=
+github.com/cloudflare/circl v1.4.0/go.mod h1:PDRU+oXvdD7KCtgKxW95M5Z8BpSCJXQORiZFnBQS5QU=
 github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/cyphar/filepath-securejoin v0.3.1 h1:1V7cHiaW+C+39wEfpH6XlLBQo3j/PciWFrgfCLS8XrE=
 github.com/cyphar/filepath-securejoin v0.3.1/go.mod h1:F7i41x/9cBF7lzCrVsYs9fuzwRZm4NQsGTBdpp6mETc=

internal/markdown/extensions/section.go

@@ -12,8 +12,10 @@ import (
 	"github.com/apricote/releaser-pleaser/internal/markdown/extensions/ast"
 )
 
-var sectionStartRegex = regexp.MustCompile(`^<!-- section-start (.+) -->`)
-var sectionEndRegex = regexp.MustCompile(`^<!-- section-end (.+) -->`)
+var (
+	sectionStartRegex = regexp.MustCompile(`^<!-- section-start (.+) -->`)
+	sectionEndRegex   = regexp.MustCompile(`^<!-- section-end (.+) -->`)
+)
 
 const (
 	sectionTrigger     = "<!--"
@@ -21,8 +23,7 @@ const (
 	SectionEndFormat   = "<!-- section-end %s -->"
 )
 
-type sectionParser struct {
-}
+type sectionParser struct{}
 
 func (s *sectionParser) Open(_ gast.Node, reader text.Reader, _ parser.Context) (gast.Node, parser.State) {
 	line, _ := reader.PeekLine()
@@ -75,8 +76,7 @@ func (s *sectionParser) Trigger() []byte {
 	return []byte(sectionTrigger)
 }
 
-type section struct {
-}
+type section struct{}
 
 // Section is an extension that allow you to use group content under a shared parent ast node.
 var Section = &section{}

internal/markdown/renderer/markdown/renderer.go

@@ -331,7 +331,7 @@ func (r *Renderer) renderFencedCodeBlock(w util.BufWriter, source []byte, node a
 		return ast.WalkStop, fmt.Errorf(": %w", err)
 	}
 	if err := r.writeByte(w, '\n'); err != nil {
-		return ast.WalkStop, nil
+		return ast.WalkStop, fmt.Errorf(": %w", err)
 	}
 
 	// Write the contents of the fenced code block.

internal/testutils/git.go

@@ -11,25 +11,26 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-var (
-	author = &object.Signature{
-		Name: "releaser-pleaser",
-		When: time.Date(2020, 01, 01, 01, 01, 01, 01, time.UTC),
-	}
-)
+var author = &object.Signature{
+	Name: "releaser-pleaser",
+	When: time.Date(2020, 01, 01, 01, 01, 01, 01, time.UTC),
+}
 
 type CommitOption func(*commitOptions)
+
 type commitOptions struct {
 	cleanFiles bool
 	files      []commitFile
 	tags       []string
 }
+
 type commitFile struct {
 	path    string
 	content string
 }
 
 type Commit func(*testing.T, *git.Repository) error
+
 type Repo func(*testing.T) *git.Repository
 
 func WithCommit(message string, options ...CommitOption) Commit {
@@ -83,7 +84,6 @@ func WithCommit(message string, options ...CommitOption) Commit {
 		}
 
 		return nil
-
 	}
 }
 

releasepr.go

@@ -155,6 +155,9 @@ func (pr *ReleasePullRequest) parseVersioningFlags(overrides ReleaseOverrides) R
 			overrides.NextVersionType = NextVersionTypeBeta
 		case LabelNextVersionTypeAlpha:
 			overrides.NextVersionType = NextVersionTypeAlpha
+		case LabelReleasePending, LabelReleaseTagged:
+			// These labels have no effect on the versioning.
+			break
 		}
 	}
 

releaserpleaser.go

@@ -3,7 +3,9 @@ package rp
 import (
 	"context"
 	"fmt"
+	"io"
 	"log/slog"
+	"os"
 
 	"github.com/go-git/go-git/v5"
 	"github.com/go-git/go-git/v5/config"
@@ -20,15 +22,19 @@ type ReleaserPleaser struct {
 	targetBranch string
 	commitParser CommitParser
 	nextVersion  VersioningStrategy
+	extraFiles   []string
+	updaters     []Updater
 }
 
-func New(forge Forge, logger *slog.Logger, targetBranch string, commitParser CommitParser, versioningStrategy VersioningStrategy) *ReleaserPleaser {
+func New(forge Forge, logger *slog.Logger, targetBranch string, commitParser CommitParser, versioningStrategy VersioningStrategy, extraFiles []string, updaters []Updater) *ReleaserPleaser {
 	return &ReleaserPleaser{
 		forge:        forge,
 		logger:       logger,
 		targetBranch: targetBranch,
 		commitParser: commitParser,
 		nextVersion:  versioningStrategy,
+		extraFiles:   extraFiles,
+		updaters:     updaters,
 	}
 }
 
@@ -236,21 +242,74 @@ func (rp *ReleaserPleaser) runReconcileReleasePR(ctx context.Context) error {
 		return fmt.Errorf("failed to check out branch: %w", err)
 	}
 
-	err = RunUpdater(ctx, nextVersion, worktree)
-	if err != nil {
-		return fmt.Errorf("failed to update files with new version: %w", err)
-	}
-
 	changelogEntry, err := NewChangelogEntry(analyzedCommits, nextVersion, rp.forge.ReleaseURL(nextVersion), releaseOverrides.Prefix, releaseOverrides.Suffix)
 	if err != nil {
 		return fmt.Errorf("failed to build changelog entry: %w", err)
 	}
 
-	err = UpdateChangelogFile(worktree, changelogEntry)
+	// Info for updaters
+	info := ReleaseInfo{Version: nextVersion, ChangelogEntry: changelogEntry}
+
+	updateFile := func(path string, updaters []Updater) error {
+		file, err := worktree.Filesystem.OpenFile(path, os.O_RDWR, 0)
+		if err != nil {
+			return err
+		}
+		defer file.Close()
+
+		content, err := io.ReadAll(file)
+		if err != nil {
+			return err
+		}
+
+		updatedContent := string(content)
+
+		for _, updater := range updaters {
+			updatedContent, err = updater.UpdateContent(updatedContent, info)
+			if err != nil {
+				return fmt.Errorf("failed to run updater %T on file %s", updater, path)
+			}
+		}
+
+		err = file.Truncate(0)
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+		_, err = file.Seek(0, 0)
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+		_, err = file.Write([]byte(updatedContent))
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+
+		_, err = worktree.Add(path)
+		if err != nil {
+			return fmt.Errorf("failed to add updated file to git worktree: %w", err)
+		}
+
+		return nil
+	}
+
+	err = updateFile(ChangelogFile, []Updater{&ChangelogUpdater{}})
 	if err != nil {
 		return fmt.Errorf("failed to update changelog file: %w", err)
 	}
 
+	for _, path := range rp.extraFiles {
+		_, err = worktree.Filesystem.Stat(path)
+		if err != nil {
+			// TODO: Check for non existing file or dirs
+			return fmt.Errorf("failed to run file updater because the file %s does not exist: %w", path, err)
+		}
+
+		err = updateFile(path, rp.updaters)
+		if err != nil {
+			return fmt.Errorf("failed to run file updater: %w", err)
+		}
+	}
+
 	releaseCommitMessage := fmt.Sprintf("chore(%s): release %s", rp.targetBranch, nextVersion)
 	releaseCommitHash, err := worktree.Commit(releaseCommitMessage, &git.CommitOptions{
 		Author:    GitSignature(),

updater.go

@@ -1,12 +1,47 @@
 package rp
 
 import (
-	"context"
-
-	"github.com/go-git/go-git/v5"
+	"fmt"
+	"regexp"
+	"strings"
 )
 
-func RunUpdater(ctx context.Context, version string, worktree *git.Worktree) error {
-	// TODO: Implement updater for Go,Python,ExtraFilesMarkers
-	return nil
+var (
+	GenericUpdaterSemVerRegex   = regexp.MustCompile(`\d+\.\d+\.\d+(-[\w.]+)?(.*x-releaser-pleaser-version)`)
+	ChangelogUpdaterHeaderRegex = regexp.MustCompile(`^# Changelog\n`)
+)
+
+type ReleaseInfo struct {
+	Version        string
+	ChangelogEntry string
+}
+
+type Updater interface {
+	UpdateContent(content string, info ReleaseInfo) (string, error)
+}
+
+type GenericUpdater struct{}
+
+func (u *GenericUpdater) UpdateContent(content string, info ReleaseInfo) (string, error) {
+	// We strip the "v" prefix to avoid adding/removing it from the users input.
+	version := strings.TrimPrefix(info.Version, "v")
+
+	return GenericUpdaterSemVerRegex.ReplaceAllString(content, version+"${2}"), nil
+}
+
+type ChangelogUpdater struct{}
+
+func (u *ChangelogUpdater) UpdateContent(content string, info ReleaseInfo) (string, error) {
+	headerIndex := ChangelogUpdaterHeaderRegex.FindStringIndex(content)
+	if headerIndex == nil && len(content) != 0 {
+		return "", fmt.Errorf("unexpected format of CHANGELOG.md, header does not match")
+	}
+	if headerIndex != nil {
+		// Remove the header from the content
+		content = content[headerIndex[1]:]
+	}
+
+	content = ChangelogHeader + "\n\n" + info.ChangelogEntry + content
+
+	return content, nil
 }

updater_test.go

@@ -0,0 +1,129 @@
+package rp
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+type updaterTestCase struct {
+	name    string
+	content string
+	info    ReleaseInfo
+	want    string
+	wantErr assert.ErrorAssertionFunc
+}
+
+func runUpdaterTest(t *testing.T, updater Updater, tt updaterTestCase) {
+	t.Helper()
+
+	got, err := updater.UpdateContent(tt.content, tt.info)
+	if !tt.wantErr(t, err, fmt.Sprintf("UpdateContent(%v, %v)", tt.content, tt.info)) {
+		return
+	}
+	assert.Equalf(t, tt.want, got, "UpdateContent(%v, %v)", tt.content, tt.info)
+}
+
+func TestGenericUpdater_UpdateContent(t *testing.T) {
+	updater := &GenericUpdater{}
+
+	tests := []updaterTestCase{
+		{
+			name:    "single line",
+			content: "v1.0.0 // x-releaser-pleaser-version",
+			info: ReleaseInfo{
+				Version: "v1.2.0",
+			},
+			want:    "v1.2.0 // x-releaser-pleaser-version",
+			wantErr: assert.NoError,
+		},
+		{
+			name:    "multiline line",
+			content: "Foooo\n\v1.2.0\nv1.0.0 // x-releaser-pleaser-version\n",
+			info: ReleaseInfo{
+				Version: "v1.2.0",
+			},
+			want:    "Foooo\n\v1.2.0\nv1.2.0 // x-releaser-pleaser-version\n",
+			wantErr: assert.NoError,
+		},
+		{
+			name:    "invalid existing version",
+			content: "1.0 // x-releaser-pleaser-version",
+			info: ReleaseInfo{
+				Version: "v1.2.0",
+			},
+			want:    "1.0 // x-releaser-pleaser-version",
+			wantErr: assert.NoError,
+		},
+		{
+			name:    "complicated line",
+			content: "version: v1.2.0-alpha.1 => Awesome, isnt it? x-releaser-pleaser-version foobar",
+			info: ReleaseInfo{
+				Version: "v1.2.0",
+			},
+			want:    "version: v1.2.0 => Awesome, isnt it? x-releaser-pleaser-version foobar",
+			wantErr: assert.NoError,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			runUpdaterTest(t, updater, tt)
+		})
+	}
+}
+
+func TestChangelogUpdater_UpdateContent(t *testing.T) {
+	updater := &ChangelogUpdater{}
+
+	tests := []updaterTestCase{
+		{
+			name:    "empty file",
+			content: "",
+			info:    ReleaseInfo{ChangelogEntry: "## v1.0.0\n"},
+			want:    "# Changelog\n\n## v1.0.0\n",
+			wantErr: assert.NoError,
+		},
+		{
+			name: "well-formatted changelog",
+			content: `# Changelog
+
+## v0.0.1
+
+- Bazzle
+
+## v0.1.0
+
+### Bazuuum
+`,
+			info: ReleaseInfo{ChangelogEntry: "## v1.0.0\n\n- Version 1, juhu.\n"},
+			want: `# Changelog
+
+## v1.0.0
+
+- Version 1, juhu.
+
+## v0.0.1
+
+- Bazzle
+
+## v0.1.0
+
+### Bazuuum
+`,
+			wantErr: assert.NoError,
+		},
+		{
+			name:    "error on invalid header",
+			content: "What even is this file?",
+			info:    ReleaseInfo{ChangelogEntry: "## v1.0.0\n\n- Version 1, juhu.\n"},
+			want:    "",
+			wantErr: assert.Error,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			runUpdaterTest(t, updater, tt)
+		})
+	}
+}

versioning.go

@@ -45,6 +45,9 @@ func SemVerNextVersion(r Releases, versionBump conventionalcommits.VersionBump,
 	case conventionalcommits.MajorVersion:
 		err = next.IncrementMajor()
 	}
+	if err != nil {
+		return "", err
+	}
 
 	switch nextVersionType {
 	case NextVersionTypeUndefined, NextVersionTypeNormal:
@@ -62,10 +65,6 @@ func SemVerNextVersion(r Releases, versionBump conventionalcommits.VersionBump,
 		setPRVersion(&next, nextVersionType.String(), id)
 	}
 
-	if err != nil {
-		return "", err
-	}
-
 	return "v" + next.String(), nil
 }