mirror of
https://github.com/restic/restic.git
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732 lines
18 KiB
Go
732 lines
18 KiB
Go
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package webdav
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import (
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"fmt"
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"math/rand"
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"path"
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"reflect"
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"sort"
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"strconv"
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"strings"
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"testing"
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"time"
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)
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func TestWalkToRoot(t *testing.T) {
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testCases := []struct {
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name string
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want []string
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}{{
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"/a/b/c/d",
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[]string{
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"/a/b/c/d",
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"/a/b/c",
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"/a/b",
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"/a",
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"/",
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},
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}, {
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"/a",
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[]string{
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"/a",
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"/",
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},
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}, {
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"/",
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[]string{
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"/",
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},
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}}
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for _, tc := range testCases {
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var got []string
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if !walkToRoot(tc.name, func(name0 string, first bool) bool {
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if first != (len(got) == 0) {
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t.Errorf("name=%q: first=%t but len(got)==%d", tc.name, first, len(got))
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return false
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}
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got = append(got, name0)
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return true
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}) {
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continue
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}
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if !reflect.DeepEqual(got, tc.want) {
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t.Errorf("name=%q:\ngot %q\nwant %q", tc.name, got, tc.want)
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}
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}
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}
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var lockTestDurations = []time.Duration{
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infiniteTimeout, // infiniteTimeout means to never expire.
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0, // A zero duration means to expire immediately.
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100 * time.Hour, // A very large duration will not expire in these tests.
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}
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// lockTestNames are the names of a set of mutually compatible locks. For each
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// name fragment:
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// - _ means no explicit lock.
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// - i means a infinite-depth lock,
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// - z means a zero-depth lock,
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var lockTestNames = []string{
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"/_/_/_/_/z",
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"/_/_/i",
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"/_/z",
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"/_/z/i",
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"/_/z/z",
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"/_/z/_/i",
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"/_/z/_/z",
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"/i",
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"/z",
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"/z/_/i",
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"/z/_/z",
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}
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func lockTestZeroDepth(name string) bool {
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switch name[len(name)-1] {
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case 'i':
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return false
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case 'z':
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return true
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}
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panic(fmt.Sprintf("lock name %q did not end with 'i' or 'z'", name))
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}
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func TestMemLSCanCreate(t *testing.T) {
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now := time.Unix(0, 0)
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m := NewMemLS().(*memLS)
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for _, name := range lockTestNames {
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_, err := m.Create(now, LockDetails{
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Root: name,
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Duration: infiniteTimeout,
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ZeroDepth: lockTestZeroDepth(name),
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})
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if err != nil {
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t.Fatalf("creating lock for %q: %v", name, err)
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}
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}
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wantCanCreate := func(name string, zeroDepth bool) bool {
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for _, n := range lockTestNames {
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switch {
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case n == name:
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// An existing lock has the same name as the proposed lock.
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return false
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case strings.HasPrefix(n, name):
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// An existing lock would be a child of the proposed lock,
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// which conflicts if the proposed lock has infinite depth.
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if !zeroDepth {
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return false
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}
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case strings.HasPrefix(name, n):
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// An existing lock would be an ancestor of the proposed lock,
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// which conflicts if the ancestor has infinite depth.
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if n[len(n)-1] == 'i' {
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return false
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}
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}
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}
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return true
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}
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var check func(int, string)
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check = func(recursion int, name string) {
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for _, zeroDepth := range []bool{false, true} {
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got := m.canCreate(name, zeroDepth)
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want := wantCanCreate(name, zeroDepth)
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if got != want {
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t.Errorf("canCreate name=%q zeroDepth=%t: got %t, want %t", name, zeroDepth, got, want)
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}
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}
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if recursion == 6 {
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return
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}
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if name != "/" {
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name += "/"
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}
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for _, c := range "_iz" {
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check(recursion+1, name+string(c))
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}
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}
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check(0, "/")
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}
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func TestMemLSLookup(t *testing.T) {
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now := time.Unix(0, 0)
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m := NewMemLS().(*memLS)
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badToken := m.nextToken()
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t.Logf("badToken=%q", badToken)
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for _, name := range lockTestNames {
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token, err := m.Create(now, LockDetails{
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Root: name,
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Duration: infiniteTimeout,
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ZeroDepth: lockTestZeroDepth(name),
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})
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if err != nil {
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t.Fatalf("creating lock for %q: %v", name, err)
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}
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t.Logf("%-15q -> node=%p token=%q", name, m.byName[name], token)
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}
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baseNames := append([]string{"/a", "/b/c"}, lockTestNames...)
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for _, baseName := range baseNames {
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for _, suffix := range []string{"", "/0", "/1/2/3"} {
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name := baseName + suffix
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goodToken := ""
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base := m.byName[baseName]
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if base != nil && (suffix == "" || !lockTestZeroDepth(baseName)) {
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goodToken = base.token
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}
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for _, token := range []string{badToken, goodToken} {
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if token == "" {
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continue
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}
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got := m.lookup(name, Condition{Token: token})
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want := base
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if token == badToken {
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want = nil
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}
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if got != want {
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t.Errorf("name=%-20qtoken=%q (bad=%t): got %p, want %p",
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name, token, token == badToken, got, want)
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}
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}
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}
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}
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}
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func TestMemLSConfirm(t *testing.T) {
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now := time.Unix(0, 0)
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m := NewMemLS().(*memLS)
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alice, err := m.Create(now, LockDetails{
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Root: "/alice",
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Duration: infiniteTimeout,
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ZeroDepth: false,
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})
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tweedle, err := m.Create(now, LockDetails{
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Root: "/tweedle",
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Duration: infiniteTimeout,
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ZeroDepth: false,
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})
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if err != nil {
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t.Fatalf("Create: %v", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Create: inconsistent state: %v", err)
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}
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// Test a mismatch between name and condition.
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_, err = m.Confirm(now, "/tweedle/dee", "", Condition{Token: alice})
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if err != ErrConfirmationFailed {
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t.Fatalf("Confirm (mismatch): got %v, want ErrConfirmationFailed", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Confirm (mismatch): inconsistent state: %v", err)
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}
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// Test two names (that fall under the same lock) in the one Confirm call.
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release, err := m.Confirm(now, "/tweedle/dee", "/tweedle/dum", Condition{Token: tweedle})
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if err != nil {
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t.Fatalf("Confirm (twins): %v", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Confirm (twins): inconsistent state: %v", err)
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}
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release()
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if err := m.consistent(); err != nil {
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t.Fatalf("release (twins): inconsistent state: %v", err)
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}
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// Test the same two names in overlapping Confirm / release calls.
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releaseDee, err := m.Confirm(now, "/tweedle/dee", "", Condition{Token: tweedle})
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if err != nil {
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t.Fatalf("Confirm (sequence #0): %v", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Confirm (sequence #0): inconsistent state: %v", err)
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}
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_, err = m.Confirm(now, "/tweedle/dum", "", Condition{Token: tweedle})
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if err != ErrConfirmationFailed {
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t.Fatalf("Confirm (sequence #1): got %v, want ErrConfirmationFailed", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Confirm (sequence #1): inconsistent state: %v", err)
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}
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releaseDee()
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if err := m.consistent(); err != nil {
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t.Fatalf("release (sequence #2): inconsistent state: %v", err)
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}
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releaseDum, err := m.Confirm(now, "/tweedle/dum", "", Condition{Token: tweedle})
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if err != nil {
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t.Fatalf("Confirm (sequence #3): %v", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Confirm (sequence #3): inconsistent state: %v", err)
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}
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// Test that you can't unlock a held lock.
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err = m.Unlock(now, tweedle)
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if err != ErrLocked {
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t.Fatalf("Unlock (sequence #4): got %v, want ErrLocked", err)
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}
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releaseDum()
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if err := m.consistent(); err != nil {
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t.Fatalf("release (sequence #5): inconsistent state: %v", err)
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}
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err = m.Unlock(now, tweedle)
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if err != nil {
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t.Fatalf("Unlock (sequence #6): %v", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Unlock (sequence #6): inconsistent state: %v", err)
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}
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}
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func TestMemLSNonCanonicalRoot(t *testing.T) {
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now := time.Unix(0, 0)
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m := NewMemLS().(*memLS)
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token, err := m.Create(now, LockDetails{
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Root: "/foo/./bar//",
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Duration: 1 * time.Second,
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})
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if err != nil {
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t.Fatalf("Create: %v", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Create: inconsistent state: %v", err)
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}
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if err := m.Unlock(now, token); err != nil {
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t.Fatalf("Unlock: %v", err)
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}
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if err := m.consistent(); err != nil {
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t.Fatalf("Unlock: inconsistent state: %v", err)
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}
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}
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func TestMemLSExpiry(t *testing.T) {
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m := NewMemLS().(*memLS)
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testCases := []string{
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"setNow 0",
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"create /a.5",
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"want /a.5",
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"create /c.6",
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"want /a.5 /c.6",
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"create /a/b.7",
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"want /a.5 /a/b.7 /c.6",
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"setNow 4",
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"want /a.5 /a/b.7 /c.6",
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"setNow 5",
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"want /a/b.7 /c.6",
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"setNow 6",
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"want /a/b.7",
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"setNow 7",
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"want ",
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"setNow 8",
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"want ",
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"create /a.12",
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"create /b.13",
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"create /c.15",
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"create /a/d.16",
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"want /a.12 /a/d.16 /b.13 /c.15",
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"refresh /a.14",
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"want /a.14 /a/d.16 /b.13 /c.15",
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"setNow 12",
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"want /a.14 /a/d.16 /b.13 /c.15",
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"setNow 13",
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"want /a.14 /a/d.16 /c.15",
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"setNow 14",
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"want /a/d.16 /c.15",
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"refresh /a/d.20",
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"refresh /c.20",
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"want /a/d.20 /c.20",
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"setNow 20",
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"want ",
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}
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tokens := map[string]string{}
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zTime := time.Unix(0, 0)
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now := zTime
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for i, tc := range testCases {
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j := strings.IndexByte(tc, ' ')
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if j < 0 {
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t.Fatalf("test case #%d %q: invalid command", i, tc)
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}
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op, arg := tc[:j], tc[j+1:]
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switch op {
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default:
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t.Fatalf("test case #%d %q: invalid operation %q", i, tc, op)
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case "create", "refresh":
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parts := strings.Split(arg, ".")
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if len(parts) != 2 {
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t.Fatalf("test case #%d %q: invalid create", i, tc)
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}
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root := parts[0]
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d, err := strconv.Atoi(parts[1])
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if err != nil {
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t.Fatalf("test case #%d %q: invalid duration", i, tc)
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}
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dur := time.Unix(0, 0).Add(time.Duration(d) * time.Second).Sub(now)
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switch op {
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case "create":
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token, err := m.Create(now, LockDetails{
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Root: root,
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Duration: dur,
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ZeroDepth: true,
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})
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if err != nil {
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t.Fatalf("test case #%d %q: Create: %v", i, tc, err)
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}
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tokens[root] = token
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case "refresh":
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token := tokens[root]
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if token == "" {
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t.Fatalf("test case #%d %q: no token for %q", i, tc, root)
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}
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got, err := m.Refresh(now, token, dur)
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if err != nil {
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t.Fatalf("test case #%d %q: Refresh: %v", i, tc, err)
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}
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want := LockDetails{
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Root: root,
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Duration: dur,
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ZeroDepth: true,
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}
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if got != want {
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t.Fatalf("test case #%d %q:\ngot %v\nwant %v", i, tc, got, want)
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}
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}
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case "setNow":
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d, err := strconv.Atoi(arg)
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if err != nil {
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t.Fatalf("test case #%d %q: invalid duration", i, tc)
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}
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now = time.Unix(0, 0).Add(time.Duration(d) * time.Second)
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case "want":
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m.mu.Lock()
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m.collectExpiredNodes(now)
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got := make([]string, 0, len(m.byToken))
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for _, n := range m.byToken {
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got = append(got, fmt.Sprintf("%s.%d",
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n.details.Root, n.expiry.Sub(zTime)/time.Second))
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}
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m.mu.Unlock()
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sort.Strings(got)
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want := []string{}
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if arg != "" {
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want = strings.Split(arg, " ")
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}
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if !reflect.DeepEqual(got, want) {
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t.Fatalf("test case #%d %q:\ngot %q\nwant %q", i, tc, got, want)
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}
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}
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if err := m.consistent(); err != nil {
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||
|
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)
|
||
|
}
|
||
|
}
|
||
|
}
|