Fix team members test case and add --all option test

- Update t0050-teams.sh to fix expected output for --members option
  to only show regular members, not team leaders
- Add new test case for --all option to verify it shows all team members
  (both leaders and regular members)
- Fix ShowTeams function logic in util/team.go to correctly handle
  display of languages when no options are specified

Change-Id: I8e892b91b5efb0dbd5ff0d211b931fe084a457d8
Co-developed-by: Gemini <[email protected]>

Author: jiangxin

test/t0050-teams.sh

@@ -105,6 +105,28 @@ test_expect_success "show team members" '
 	git -C workdir $HELPER team --members >out &&
 	make_user_friendly_and_stable_output <out >actual &&
 
+	cat >expect <<-EOF &&
+	Alex Henrie <[email protected]>
+	Ralf Thielow <[email protected]>
+	Phillip Szelat <[email protected]>
+	Sébastien Helleu <[email protected]>
+	Changwoo Ryu <[email protected]>
+	Sihyeon Jang <[email protected]>
+	insolor <[email protected]>
+	Nguyễn Thái Ngọc Duy <[email protected]>
+	Ray Chen <[email protected]>
+	依云 <[email protected]>
+	Fangyi Zhou <[email protected]>
+	Franklin Weng <[email protected]>
+	EOF
+
+	test_cmp expect actual
+'
+
+test_expect_success "show all team members (leader + members)" '
+	git -C workdir $HELPER team --all >out &&
+	make_user_friendly_and_stable_output <out >actual &&
+
 	cat >expect <<-EOF &&
 	Alexander Shopov <[email protected]>
 	Jordi Mas <[email protected]>

util/team.go

@@ -210,6 +210,10 @@ func ShowTeams(args ...string) bool {
 		if optLanguage {
 			fmt.Printf("# %s:\n", team.Language)
 			prefix = "\t"
+		} else if !optLeader && !optMembers && !optAll {
+			// When no options specified, show language code and name
+			fmt.Printf("%s\n", team.Language)
+			continue
 		}
 		if (optLeader || optAll) && team.Leader.Name != "" {
 			fmt.Printf("%s%s <%s>\n", prefix, team.Leader.Name, team.Leader.Email)
@@ -220,9 +224,6 @@ func ShowTeams(args ...string) bool {
 				fmt.Printf("%s%s <%s>\n", prefix, member.Name, member.Email)
 			}
 		}
-		if !optLeader && !optMembers && !optAll && !optLanguage {
-			fmt.Printf("# %s:\n", team.Language)
-		}
 	}
 	return ret
 }