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// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build ((darwin || dragonfly || freebsd || (js && wasm) || wasip1 || (!android && linux) || netbsd || openbsd || solaris) && ((!cgo && !darwin) || osusergo)) || aix || illumos
package user
import (
"fmt"
"sort"
"strings"
"testing"
)
var testGroupFile = `# See the opendirectoryd(8) man page for additional
# information about Open Directory.
##
nobody:*:-2:
nogroup:*:-1:
wheel:*:0:root
emptyid:*::root
invalidgid:*:notanumber:root
+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)
}
return b.String()
}
var listGroupsTests = []struct {
// input
in string
user string
gid string
// output
gids []string
err bool
}{
{in: testGroupFile, user: "root", gid: "0", gids: []string{"0", "1", "2", "7"}},
{in: testGroupFile, user: "jill", gid: "33", gids: []string{"33", "777"}},
{in: testGroupFile, user: "jody", gid: "34", gids: []string{"34", "777"}},
{in: testGroupFile, user: "john", gid: "35", gids: []string{"35", "777"}},
{in: testGroupFile, user: "jov", gid: "37", gids: []string{"37", "777"}},
{in: testGroupFile, user: "user777", gid: "7", gids: []string{"7", "777", "1000"}},
{in: testGroupFile, user: "user1111", gid: "1111", gids: []string{"1111", "1000"}},
{in: testGroupFile, user: "user1000", gid: "1000", gids: []string{"1000"}},
{in: testGroupFile, user: "user7500", gid: "7500", gids: []string{"1000", "7500"}},
{in: testGroupFile, user: "no-such-user", gid: "2345", gids: []string{"2345"}},
{in: "", user: "no-such-user", gid: "2345", gids: []string{"2345"}},
// Error cases.
{in: "", user: "", gid: "2345", err: true},
{in: "", user: "joanna", gid: "bad", err: true},
}
func TestListGroups(t *testing.T) {
for _, tc := range listGroupsTests {
u := &User{Username: tc.user, Gid: tc.gid}
got, err := listGroupsFromReader(u, strings.NewReader(tc.in))
if tc.err {
if err == nil {
t.Errorf("listGroups(%q): got nil; want error", tc.user)
}
continue // no more checks
}
if err != nil {
t.Errorf("listGroups(%q): got %v error, want nil", tc.user, err)
continue // no more checks
}
checkSameIDs(t, got, tc.gids)
}
}
func checkSameIDs(t *testing.T, got, want []string) {
t.Helper()
if len(got) != len(want) {
t.Errorf("ID list mismatch: got %v; want %v", got, want)
return
}
sort.Strings(got)
sort.Strings(want)
mismatch := -1
for i, g := range want {
if got[i] != g {
mismatch = i
break
}
}
if mismatch != -1 {
t.Errorf("ID list mismatch (at index %d): got %v; want %v", mismatch, got, want)
}
}
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