refactor: extract getVersion function (#1127)

Co-authored-by: chavacava <salvador.cavadini@gmail.com>

cli/main.go

@@ -16,11 +16,18 @@ import (
 	"github.com/spf13/afero"
 )
 
+const (
+	defaultVersion = "dev"
+	defaultCommit  = "none"
+	defaultDate    = "unknown"
+	defaultBuilder = "unknown"
+)
+
 var (
-	version = "dev"
-	commit  = "none"
-	date    = "unknown"
-	builtBy = "unknown"
+	version = defaultVersion
+	commit  = defaultCommit
+	date    = defaultDate
+	builtBy = defaultBuilder
 	//AppFs is used to operations related with user config files
 	AppFs = afero.NewOsFs()
 )
@@ -35,6 +42,12 @@ func RunRevive(extraRules ...revivelib.ExtraRule) {
 	// move parsing flags outside of init() otherwise tests dont works properly
 	// more info: https://github.com/golang/go/issues/46869#issuecomment-865695953
 	initConfig()
+
+	if versionFlag {
+		fmt.Print(getVersion(builtBy, date, commit, version))
+		os.Exit(0)
+	}
+
 	conf, err := config.GetConfig(configPath)
 	if err != nil {
 		fail(err.Error())
@@ -160,35 +173,33 @@ func initConfig() {
 	flag.BoolVar(&setExitStatus, "set_exit_status", false, exitStatusUsage)
 	flag.IntVar(&maxOpenFiles, "max_open_files", 0, maxOpenFilesUsage)
 	flag.Parse()
+}
 
-	// Output build info (version, commit, date and builtBy)
-	if versionFlag {
-		var buildInfo string
-		if date != "unknown" && builtBy != "unknown" {
-			buildInfo = fmt.Sprintf("Built\t\t%s by %s\n", date, builtBy)
-		}
+// getVersion returns build info (version, commit, date and builtBy)
+func getVersion(builtBy, date, commit, version string) string {
+	var buildInfo string
+	if date != defaultDate && builtBy != defaultBuilder {
+		buildInfo = fmt.Sprintf("Built\t\t%s by %s\n", date, builtBy)
+	}
 
-		if commit != "none" {
-			buildInfo = fmt.Sprintf("Commit:\t\t%s\n%s", commit, buildInfo)
-		}
+	if commit != defaultCommit {
+		buildInfo = fmt.Sprintf("Commit:\t\t%s\n%s", commit, buildInfo)
+	}
 
-		if version == "dev" {
-			bi, ok := debug.ReadBuildInfo()
-			if ok {
-				version = bi.Main.Version
-				if strings.HasPrefix(version, "v") {
-					version = bi.Main.Version[1:]
-				}
-				if len(buildInfo) == 0 {
-					fmt.Printf("version %s\n", version)
-					os.Exit(0)
-				}
+	if version == defaultVersion {
+		bi, ok := debug.ReadBuildInfo()
+		if ok {
+			version = bi.Main.Version
+			if strings.HasPrefix(version, "v") {
+				version = strings.TrimLeft(bi.Main.Version, "v")
+			}
+			if len(buildInfo) == 0 {
+				return fmt.Sprintf("version %s\n", version)
 			}
 		}
-
-		fmt.Printf("Version:\t%s\n%s", version, buildInfo)
-		os.Exit(0)
 	}
+
+	return fmt.Sprintf("Version:\t%s\n%s", version, buildInfo)
 }
 
 func fileExist(path string) bool {

cli/main_test.go

@@ -86,3 +86,44 @@ func TestXDGConfigDirNoFile(t *testing.T) {
 		t.Errorf("got %q, wanted %q", got, want)
 	}
 }
+
+func TestGetVersion(t *testing.T) {
+	tests := []struct {
+		name    string
+		version string
+		commit  string
+		date    string
+		builtBy string
+		want    string
+	}{
+		{
+			name:    "Development version",
+			version: defaultVersion,
+			commit:  defaultCommit,
+			date:    defaultDate,
+			builtBy: defaultBuilder,
+			want:    "version \n",
+		},
+		{
+			name:    "Release version",
+			version: "v1.5.0-12-g7ee4500-dev",
+			commit:  "7ee4500e125e2d1b12653b2c8e140fec380919b4",
+			date:    "2024-11-15 10:52 UTC",
+			builtBy: "builder",
+			want: `Version:	v1.5.0-12-g7ee4500-dev
+Commit:		7ee4500e125e2d1b12653b2c8e140fec380919b4
+Built		2024-11-15 10:52 UTC by builder
+`,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := getVersion(tt.builtBy, tt.date, tt.commit, tt.version)
+
+			if got != tt.want {
+				t.Errorf("getVersion() = %q, want %q", got, tt.want)
+			}
+		})
+	}
+}