chore: allow "list" and "run" without commits.

Signed-off-by: Tiago Natel <[email protected]>

cmd/terramate/cli/cli.go

@@ -497,6 +497,10 @@ Please see https://terramate.io/docs/cli/configuration/project-setup for details
 		log.Fatal().Msg("flag --changed provided but no git repository found")
 	}
 
+	if parsedArgs.Changed && !prj.hasCommits() {
+		log.Fatal().Msg("flag --changed provided but repository has no commits")
+	}
+
 	uimode := HumanMode
 	if val := os.Getenv("CI"); envVarIsSet(val) {
 		uimode = AutomationMode
@@ -615,17 +619,18 @@ func (c *cli) run() {
 }
 
 func (c *cli) setupGit() {
-	if c.prj.isRepo && c.parsedArgs.Changed {
+	if !c.prj.isRepo || !c.prj.hasCommits() || !c.parsedArgs.Changed {
+		return
+	}
 
-		if err := c.prj.checkDefaultRemote(); err != nil {
-			fatal(err, "checking git default remote")
-		}
+	if err := c.prj.checkDefaultRemote(); err != nil {
+		fatal(err, "checking git default remote")
+	}
 
-		if c.parsedArgs.GitChangeBase != "" {
-			c.prj.baseRef = c.parsedArgs.GitChangeBase
-		} else {
-			c.prj.baseRef = c.prj.defaultBaseRef()
-		}
+	if c.parsedArgs.GitChangeBase != "" {
+		c.prj.baseRef = c.parsedArgs.GitChangeBase
+	} else {
+		c.prj.baseRef = c.prj.defaultBaseRef()
 	}
 }
 
@@ -867,7 +872,11 @@ func (c *cli) gencodeWithVendor() (generate.Report, download.Report) {
 }
 
 func (c *cli) checkGitUntracked() bool {
-	if c.parsedArgs.DisableCheckGitUntracked {
+	if !c.prj.isRepo || c.parsedArgs.DisableCheckGitUntracked {
+		return false
+	}
+
+	if c.prj.isRepo && !c.prj.hasCommits() {
 		return false
 	}
 
@@ -888,7 +897,11 @@ func (c *cli) checkGitUntracked() bool {
 }
 
 func (c *cli) checkGitUncommited() bool {
-	if c.parsedArgs.DisableCheckGitUncommitted {
+	if !c.prj.isRepo || c.parsedArgs.DisableCheckGitUncommitted {
+		return false
+	}
+
+	if c.prj.isRepo && !c.prj.hasCommits() {
 		return false
 	}
 
@@ -949,7 +962,7 @@ func (c *cli) gitSafeguardDefaultBranchIsReachable() {
 		Bool("is_enabled", c.gitSafeguardRemoteEnabled()).
 		Logger()
 
-	if !c.prj.isRepo || !c.gitSafeguardRemoteEnabled() {
+	if !c.prj.isRepo || !c.prj.hasCommits() || !c.gitSafeguardRemoteEnabled() {
 		logger.Debug().Msg("Safeguard default-branch-is-reachable is disabled.")
 		return
 	}
@@ -2108,10 +2121,8 @@ func lookupProject(wd string) (prj project, found bool, err error) {
 
 	gw, err := newGit(wd, false)
 	if err == nil {
-
 		gitdir, err := gw.Root()
 		if err == nil {
-
 			gitabs := gitdir
 			if !filepath.IsAbs(gitabs) {
 				gitabs = filepath.Join(wd, gitdir)

cmd/terramate/cli/project.go

@@ -78,6 +78,11 @@ func (p *project) localDefaultBranchCommit() string {
 	return val
 }
 
+func (p *project) hasCommits() bool {
+	_, err := p.git.wrapper.RevParse("HEAD")
+	return err == nil
+}
+
 func (p *project) headCommit() string {
 	if p.git.headCommit != "" {
 		return p.git.headCommit

cmd/terramate/e2etests/core/general_test.go

@@ -312,7 +312,7 @@ func TestFailsOnChangeDetectionIfRepoDoesntHaveOriginMain(t *testing.T) {
 	t.Parallel()
 
 	rootdir := test.TempDir(t)
-	assertFails := func(stderrRegex string) {
+	assertFailsWithChanged := func(stderrRegex string) {
 		t.Helper()
 
 		ts := NewCLI(t, rootdir)
@@ -335,19 +335,24 @@ func TestFailsOnChangeDetectionIfRepoDoesntHaveOriginMain(t *testing.T) {
 	git := sandbox.NewGit(t, rootdir)
 	git.InitLocalRepo()
 
-	assertFails("repository must have a configured")
+	// list and run works without commit.
+	ts := NewCLI(t, rootdir)
+	AssertRun(t, ts.ListStacks())
+	AssertRun(t, ts.Run(HelperPath, "exit", "0"))
+
+	assertFailsWithChanged("flag --changed provided but repository has no commits")
 
 	// the main branch only exists after first commit.
 	path := test.WriteFile(t, git.BaseDir(), "README.md", "# generated by terramate")
 	git.Add(path)
 	git.Commit("first commit")
 
 	git.SetupRemote("notorigin", "main", "main")
-	assertFails("repository must have a configured")
+	assertFailsWithChanged("repository must have a configured")
 
 	git.CheckoutNew("not-main")
 	git.SetupRemote("origin", "not-main", "main")
-	assertFails("has no default branch ")
+	assertFailsWithChanged("has no default branch ")
 }
 
 func TestNoArgsProvidesBasicHelp(t *testing.T) {