{testGroupFile, "emptyid", ""},
	{testGroupFile, "invalidgid", ""},
	{testGroupFile, "indented", "7"},
	{testGroupFile, "# comment", ""},
	{testGroupFile, "largegroup", "1000"},
	{testGroupFile, "manymembers", "777"},
	{"", "emptyfile", ""},
}

func TestFindGroupName(t *testing.T) {
	for _, tt := range groupTests {
		got, err := findGroupName(tt.name, strings.NewReader(tt.in))
		if tt.gid == "" {
			if err == nil {

+plussign:*:20:root
-minussign:*:21:root
# Next line is invalid (empty group name)
:*:22:root

daemon:*:1:root
    indented:*:7:root
# comment:*:4:found
     # comment:*:4:found
kmem:*:2:root
manymembers:x:777:jill,jody,john,jack,jov,user777
` + largeGroup()

func largeGroup() (res string) {
	var b strings.Builder
	b.WriteString("largegroup:x:1000:user1")
	for i := 2; i <= 7500; i++ {
		fmt.Fprintf(&b, ",user%d", i)

			if !ok {
				continue
			}
			wantMembers := want[name]
			if wantMembers == nil {
				continue
			}
			gotMembers, err := findMembers(rdr)
			if err != nil {
				t.Fatalf("error reading DWARF: %v", err)
			}

			if !reflect.DeepEqual(gotMembers, wantMembers) {
				t.Errorf("type %v: got map[member]embedded = %+v, want %+v", name, wantMembers, gotMembers)
			}
			delete(want, name)
		}
	}