// Copyright 2014 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.
package webdav
import (
"fmt"
"math/rand"
"path"
"reflect"
"sort"
"strconv"
"strings"
"testing"
"time"
)
func TestWalkToRoot(t *testing.T) {
testCases := []struct {
name string
want []string
}{{
"/a/b/c/d",
[]string{
"/a/b/c/d",
"/a/b/c",
"/a/b",
"/a",
"/",
},
}, {
"/a",
[]string{
"/a",
"/",
},
}, {
"/",
[]string{
"/",
},
}}
for _, tc := range testCases {
var got []string
if !walkToRoot(tc.name, func(name0 string, first bool) bool {
if first != (len(got) == 0) {
t.Errorf("name=%q: first=%t but len(got)==%d", tc.name, first, len(got))
return false
}
got = append(got, name0)
return true
}) {
continue
}
if !reflect.DeepEqual(got, tc.want) {
t.Errorf("name=%q:\ngot %q\nwant %q", tc.name, got, tc.want)
}
}
}
var lockTestDurations = []time.Duration{
infiniteTimeout, // infiniteTimeout means to never expire.
0, // A zero duration means to expire immediately.
100 * time.Hour, // A very large duration will not expire in these tests.
}
// lockTestNames are the names of a set of mutually compatible locks. For each
// name fragment:
// - _ means no explicit lock.
// - i means an infinite-depth lock,
// - z means a zero-depth lock,
var lockTestNames = []string{
"/_/_/_/_/z",
"/_/_/i",
"/_/z",
"/_/z/i",
"/_/z/z",
"/_/z/_/i",
"/_/z/_/z",
"/i",
"/z",
"/z/_/i",
"/z/_/z",
}
func lockTestZeroDepth(name string) bool {
switch name[len(name)-1] {
case 'i':
return false
case 'z':
return true
}
panic(fmt.Sprintf("lock name %q did not end with 'i' or 'z'", name))
}
func TestMemLSCanCreate(t *testing.T) {
now := time.Unix(0, 0)
m := NewMemLS().(*memLS)
for _, name := range lockTestNames {
_, err := m.Create(now, LockDetails{
Root: name,
Duration: infiniteTimeout,
ZeroDepth: lockTestZeroDepth(name),
})
if err != nil {
t.Fatalf("creating lock for %q: %v", name, err)
}
}
wantCanCreate := func(name string, zeroDepth bool) bool {
for _, n := range lockTestNames {
switch {
case n == name:
// An existing lock has the same name as the proposed lock.
return false
case strings.HasPrefix(n, name):
// An existing lock would be a child of the proposed lock,
// which conflicts if the proposed lock has infinite depth.
if !zeroDepth {
return false
}
case strings.HasPrefix(name, n):
// An existing lock would be an ancestor of the proposed lock,
// which conflicts if the ancestor has infinite depth.
if n[len(n)-1] == 'i' {
return false
}
}
}
return true
}
var check func(int, string)
check = func(recursion int, name string) {
for _, zeroDepth := range []bool{false, true} {
got := m.canCreate(name, zeroDepth)
want := wantCanCreate(name, zeroDepth)
if got != want {
t.Errorf("canCreate name=%q zeroDepth=%t: got %t, want %t", name, zeroDepth, got, want)
}
}
if recursion == 6 {
return
}
if name != "/" {
name += "/"
}
for _, c := range "_iz" {
check(recursion+1, name+string(c))
}
}
check(0, "/")
}
func TestMemLSLookup(t *testing.T) {
now := time.Unix(0, 0)
m := NewMemLS().(*memLS)
badToken := m.nextToken()
t.Logf("badToken=%q", badToken)
for _, name := range lockTestNames {
token, err := m.Create(now, LockDetails{
Root: name,
Duration: infiniteTimeout,
ZeroDepth: lockTestZeroDepth(name),
})
if err != nil {
t.Fatalf("creating lock for %q: %v", name, err)
}
t.Logf("%-15q -> node=%p token=%q", name, m.byName[name], token)
}
baseNames := append([]string{"/a", "/b/c"}, lockTestNames...)
for _, baseName := range baseNames {
for _, suffix := range []string{"", "/0", "/1/2/3"} {
name := baseName + suffix
goodToken := ""
base := m.byName[baseName]
if base != nil && (suffix == "" || !lockTestZeroDepth(baseName)) {
goodToken = base.token
}
for _, token := range []string{badToken, goodToken} {
if token == "" {
continue
}
got := m.lookup(name, Condition{Token: token})
want := base
if token == badToken {
want = nil
}
if got != want {
t.Errorf("name=%-20qtoken=%q (bad=%t): got %p, want %p",
name, token, token == badToken, got, want)
}
}
}
}
}
func TestMemLSConfirm(t *testing.T) {
now := time.Unix(0, 0)
m := NewMemLS().(*memLS)
alice, err := m.Create(now, LockDetails{
Root: "/alice",
Duration: infiniteTimeout,
ZeroDepth: false,
})
tweedle, err := m.Create(now, LockDetails{
Root: "/tweedle",
Duration: infiniteTimeout,
ZeroDepth: false,
})
if err != nil {
t.Fatalf("Create: %v", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Create: inconsistent state: %v", err)
}
// Test a mismatch between name and condition.
_, err = m.Confirm(now, "/tweedle/dee", "", Condition{Token: alice})
if err != ErrConfirmationFailed {
t.Fatalf("Confirm (mismatch): got %v, want ErrConfirmationFailed", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Confirm (mismatch): inconsistent state: %v", err)
}
// Test two names (that fall under the same lock) in the one Confirm call.
release, err := m.Confirm(now, "/tweedle/dee", "/tweedle/dum", Condition{Token: tweedle})
if err != nil {
t.Fatalf("Confirm (twins): %v", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Confirm (twins): inconsistent state: %v", err)
}
release()
if err := m.consistent(); err != nil {
t.Fatalf("release (twins): inconsistent state: %v", err)
}
// Test the same two names in overlapping Confirm / release calls.
releaseDee, err := m.Confirm(now, "/tweedle/dee", "", Condition{Token: tweedle})
if err != nil {
t.Fatalf("Confirm (sequence #0): %v", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Confirm (sequence #0): inconsistent state: %v", err)
}
_, err = m.Confirm(now, "/tweedle/dum", "", Condition{Token: tweedle})
if err != ErrConfirmationFailed {
t.Fatalf("Confirm (sequence #1): got %v, want ErrConfirmationFailed", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Confirm (sequence #1): inconsistent state: %v", err)
}
releaseDee()
if err := m.consistent(); err != nil {
t.Fatalf("release (sequence #2): inconsistent state: %v", err)
}
releaseDum, err := m.Confirm(now, "/tweedle/dum", "", Condition{Token: tweedle})
if err != nil {
t.Fatalf("Confirm (sequence #3): %v", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Confirm (sequence #3): inconsistent state: %v", err)
}
// Test that you can't unlock a held lock.
err = m.Unlock(now, tweedle)
if err != ErrLocked {
t.Fatalf("Unlock (sequence #4): got %v, want ErrLocked", err)
}
releaseDum()
if err := m.consistent(); err != nil {
t.Fatalf("release (sequence #5): inconsistent state: %v", err)
}
err = m.Unlock(now, tweedle)
if err != nil {
t.Fatalf("Unlock (sequence #6): %v", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Unlock (sequence #6): inconsistent state: %v", err)
}
}
func TestMemLSNonCanonicalRoot(t *testing.T) {
now := time.Unix(0, 0)
m := NewMemLS().(*memLS)
token, err := m.Create(now, LockDetails{
Root: "/foo/./bar//",
Duration: 1 * time.Second,
})
if err != nil {
t.Fatalf("Create: %v", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Create: inconsistent state: %v", err)
}
if err := m.Unlock(now, token); err != nil {
t.Fatalf("Unlock: %v", err)
}
if err := m.consistent(); err != nil {
t.Fatalf("Unlock: inconsistent state: %v", err)
}
}
func TestMemLSExpiry(t *testing.T) {
m := NewMemLS().(*memLS)
testCases := []string{
"setNow 0",
"create /a.5",
"want /a.5",
"create /c.6",
"want /a.5 /c.6",
"create /a/b.7",
"want /a.5 /a/b.7 /c.6",
"setNow 4",
"want /a.5 /a/b.7 /c.6",
"setNow 5",
"want /a/b.7 /c.6",
"setNow 6",
"want /a/b.7",
"setNow 7",
"want ",
"setNow 8",
"want ",
"create /a.12",
"create /b.13",
"create /c.15",
"create /a/d.16",
"want /a.12 /a/d.16 /b.13 /c.15",
"refresh /a.14",
"want /a.14 /a/d.16 /b.13 /c.15",
"setNow 12",
"want /a.14 /a/d.16 /b.13 /c.15",
"setNow 13",
"want /a.14 /a/d.16 /c.15",
"setNow 14",
"want /a/d.16 /c.15",
"refresh /a/d.20",
"refresh /c.20",
"want /a/d.20 /c.20",
"setNow 20",
"want ",
}
tokens := map[string]string{}
zTime := time.Unix(0, 0)
now := zTime
for i, tc := range testCases {
j := strings.IndexByte(tc, ' ')
if j < 0 {
t.Fatalf("test case #%d %q: invalid command", i, tc)
}
op, arg := tc[:j], tc[j+1:]
switch op {
default:
t.Fatalf("test case #%d %q: invalid operation %q", i, tc, op)
case "create", "refresh":
parts := strings.Split(arg, ".")
if len(parts) != 2 {
t.Fatalf("test case #%d %q: invalid create", i, tc)
}
root := parts[0]
d, err := strconv.Atoi(parts[1])
if err != nil {
t.Fatalf("test case #%d %q: invalid duration", i, tc)
}
dur := time.Unix(0, 0).Add(time.Duration(d) * time.Second).Sub(now)
switch op {
case "create":
token, err := m.Create(now, LockDetails{
Root: root,
Duration: dur,
ZeroDepth: true,
})
if err != nil {
t.Fatalf("test case #%d %q: Create: %v", i, tc, err)
}
tokens[root] = token
case "refresh":
token := tokens[root]
if token == "" {
t.Fatalf("test case #%d %q: no token for %q", i, tc, root)
}
got, err := m.Refresh(now, token, dur)
if err != nil {
t.Fatalf("test case #%d %q: Refresh: %v", i, tc, err)
}
want := LockDetails{
Root: root,
Duration: dur,
ZeroDepth: true,
}
if got != want {
t.Fatalf("test case #%d %q:\ngot %v\nwant %v", i, tc, got, want)
}
}
case "setNow":
d, err := strconv.Atoi(arg)
if err != nil {
t.Fatalf("test case #%d %q: invalid duration", i, tc)
}
now = time.Unix(0, 0).Add(time.Duration(d) * time.Second)
case "want":
m.mu.Lock()
m.collectExpiredNodes(now)
got := make([]string, 0, len(m.byToken))
for _, n := range m.byToken {
got = append(got, fmt.Sprintf("%s.%d",
n.details.Root, n.expiry.Sub(zTime)/time.Second))
}
m.mu.Unlock()
sort.Strings(got)
want := []string{}
if arg != "" {
want = strings.Split(arg, " ")
}
if !reflect.DeepEqual(got, want) {
t.Fatalf("test case #%d %q:\ngot %q\nwant %q", i, tc, got, want)
}
}
if err := m.consistent(); err != nil {
t.Fatalf("test case #%d %q: inconsistent state: %v", i, tc, err)
}
}
}
func TestMemLS(t *testing.T) {
now := time.Unix(0, 0)
m := NewMemLS().(*memLS)
rng := rand.New(rand.NewSource(0))
tokens := map[string]string{}
nConfirm, nCreate, nRefresh, nUnlock := 0, 0, 0, 0
const N = 2000
for i := 0; i < N; i++ {
name := lockTestNames[rng.Intn(len(lockTestNames))]
duration := lockTestDurations[rng.Intn(len(lockTestDurations))]
confirmed, unlocked := false, false
// If the name was already locked, we randomly confirm/release, refresh
// or unlock it. Otherwise, we create a lock.
token := tokens[name]
if token != "" {
switch rng.Intn(3) {
case 0:
confirmed = true
nConfirm++
release, err := m.Confirm(now, name, "", Condition{Token: token})
if err != nil {
t.Fatalf("iteration #%d: Confirm %q: %v", i, name, err)
}
if err := m.consistent(); err != nil {
t.Fatalf("iteration #%d: inconsistent state: %v", i, err)
}
release()
case 1:
nRefresh++
if _, err := m.Refresh(now, token, duration); err != nil {
t.Fatalf("iteration #%d: Refresh %q: %v", i, name, err)
}
case 2:
unlocked = true
nUnlock++
if err := m.Unlock(now, token); err != nil {
t.Fatalf("iteration #%d: Unlock %q: %v", i, name, err)
}
}
} else {
nCreate++
var err error
token, err = m.Create(now, LockDetails{
Root: name,
Duration: duration,
ZeroDepth: lockTestZeroDepth(name),
})
if err != nil {
t.Fatalf("iteration #%d: Create %q: %v", i, name, err)
}
}
if !confirmed {
if duration == 0 || unlocked {
// A zero-duration lock should expire immediately and is
// effectively equivalent to being unlocked.
tokens[name] = ""
} else {
tokens[name] = token
}
}
if err := m.consistent(); err != nil {
t.Fatalf("iteration #%d: inconsistent state: %v", i, err)
}
}
if nConfirm < N/10 {
t.Fatalf("too few Confirm calls: got %d, want >= %d", nConfirm, N/10)
}
if nCreate < N/10 {
t.Fatalf("too few Create calls: got %d, want >= %d", nCreate, N/10)
}
if nRefresh < N/10 {
t.Fatalf("too few Refresh calls: got %d, want >= %d", nRefresh, N/10)
}
if nUnlock < N/10 {
t.Fatalf("too few Unlock calls: got %d, want >= %d", nUnlock, N/10)
}
}
func (m *memLS) consistent() error {
m.mu.Lock()
defer m.mu.Unlock()
// If m.byName is non-empty, then it must contain an entry for the root "/",
// and its refCount should equal the number of locked nodes.
if len(m.byName) > 0 {
n := m.byName["/"]
if n == nil {
return fmt.Errorf(`non-empty m.byName does not contain the root "/"`)
}
if n.refCount != len(m.byToken) {
return fmt.Errorf("root node refCount=%d, differs from len(m.byToken)=%d", n.refCount, len(m.byToken))
}
}
for name, n := range m.byName {
// The map keys should be consistent with the node's copy of the key.
if n.details.Root != name {
return fmt.Errorf("node name %q != byName map key %q", n.details.Root, name)
}
// A name must be clean, and start with a "/".
if len(name) == 0 || name[0] != '/' {
return fmt.Errorf(`node name %q does not start with "/"`, name)
}
if name != path.Clean(name) {
return fmt.Errorf(`node name %q is not clean`, name)
}
// A node's refCount should be positive.
if n.refCount <= 0 {
return fmt.Errorf("non-positive refCount for node at name %q", name)
}
// A node's refCount should be the number of self-or-descendents that
// are locked (i.e. have a non-empty token).
var list []string
for name0, n0 := range m.byName {
// All of lockTestNames' name fragments are one byte long: '_', 'i' or 'z',
// so strings.HasPrefix is equivalent to self-or-descendent name match.
// We don't have to worry about "/foo/bar" being a false positive match
// for "/foo/b".
if strings.HasPrefix(name0, name) && n0.token != "" {
list = append(list, name0)
}
}
if n.refCount != len(list) {
sort.Strings(list)
return fmt.Errorf("node at name %q has refCount %d but locked self-or-descendents are %q (len=%d)",
name, n.refCount, list, len(list))
}
// A node n is in m.byToken if it has a non-empty token.
if n.token != "" {
if _, ok := m.byToken[n.token]; !ok {
return fmt.Errorf("node at name %q has token %q but not in m.byToken", name, n.token)
}
}
// A node n is in m.byExpiry if it has a non-negative byExpiryIndex.
if n.byExpiryIndex >= 0 {
if n.byExpiryIndex >= len(m.byExpiry) {
return fmt.Errorf("node at name %q has byExpiryIndex %d but m.byExpiry has length %d", name, n.byExpiryIndex, len(m.byExpiry))
}
if n != m.byExpiry[n.byExpiryIndex] {
return fmt.Errorf("node at name %q has byExpiryIndex %d but that indexes a different node", name, n.byExpiryIndex)
}
}
}
for token, n := range m.byToken {
// The map keys should be consistent with the node's copy of the key.
if n.token != token {
return fmt.Errorf("node token %q != byToken map key %q", n.token, token)
}
// Every node in m.byToken is in m.byName.
if _, ok := m.byName[n.details.Root]; !ok {
return fmt.Errorf("node at name %q in m.byToken but not in m.byName", n.details.Root)
}
}
for i, n := range m.byExpiry {
// The slice indices should be consistent with the node's copy of the index.
if n.byExpiryIndex != i {
return fmt.Errorf("node byExpiryIndex %d != byExpiry slice index %d", n.byExpiryIndex, i)
}
// Every node in m.byExpiry is in m.byName.
if _, ok := m.byName[n.details.Root]; !ok {
return fmt.Errorf("node at name %q in m.byExpiry but not in m.byName", n.details.Root)
}
// No node in m.byExpiry should be held.
if n.held {
return fmt.Errorf("node at name %q in m.byExpiry is held", n.details.Root)
}
}
return nil
}
func TestParseTimeout(t *testing.T) {
testCases := []struct {
s string
want time.Duration
wantErr error
}{{
"",
infiniteTimeout,
nil,
}, {
"Infinite",
infiniteTimeout,
nil,
}, {
"Infinitesimal",
0,
errInvalidTimeout,
}, {
"infinite",
0,
errInvalidTimeout,
}, {
"Second-0",
0 * time.Second,
nil,
}, {
"Second-123",
123 * time.Second,
nil,
}, {
" Second-456 ",
456 * time.Second,
nil,
}, {
"Second-4100000000",
4100000000 * time.Second,
nil,
}, {
"junk",
0,
errInvalidTimeout,
}, {
"Second-",
0,
errInvalidTimeout,
}, {
"Second--1",
0,
errInvalidTimeout,
}, {
"Second--123",
0,
errInvalidTimeout,
}, {
"Second-+123",
0,
errInvalidTimeout,
}, {
"Second-0x123",
0,
errInvalidTimeout,
}, {
"second-123",
0,
errInvalidTimeout,
}, {
"Second-4294967295",
4294967295 * time.Second,
nil,
}, {
// Section 10.7 says that "The timeout value for TimeType "Second"
// must not be greater than 2^32-1."
"Second-4294967296",
0,
errInvalidTimeout,
}, {
// This test case comes from section 9.10.9 of the spec. It says,
//
// "In this request, the client has specified that it desires an
// infinite-length lock, if available, otherwise a timeout of 4.1
// billion seconds, if available."
//
// The Go WebDAV package always supports infinite length locks,
// and ignores the fallback after the comma.
"Infinite, Second-4100000000",
infiniteTimeout,
nil,
}}
for _, tc := range testCases {
got, gotErr := parseTimeout(tc.s)
if got != tc.want || gotErr != tc.wantErr {
t.Errorf("parsing %q:\ngot %v, %v\nwant %v, %v", tc.s, got, gotErr, tc.want, tc.wantErr)
}
}
}
