syncthing/lib/scanner/blocks_test.go
Jakob Borg 7aaa1dd8a3 lib/scanner: Recheck file size and modification time after hashing (ref #3440)
To catch the case where the file changed. Also make sure we never let a
size-vs-blocklist mismatch slip through.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3443
2016-07-26 08:51:39 +00:00

125 lines
4.2 KiB
Go

// Copyright (C) 2014 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
package scanner
import (
"bytes"
"fmt"
"testing"
"github.com/syncthing/syncthing/lib/protocol"
)
var blocksTestData = []struct {
data []byte
blocksize int
hash []string
}{
{[]byte(""), 1024, []string{
"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"}},
{[]byte("contents"), 1024, []string{
"d1b2a59fbea7e20077af9f91b27e95e865061b270be03ff539ab3b73587882e8"}},
{[]byte("contents"), 9, []string{
"d1b2a59fbea7e20077af9f91b27e95e865061b270be03ff539ab3b73587882e8"}},
{[]byte("contents"), 8, []string{
"d1b2a59fbea7e20077af9f91b27e95e865061b270be03ff539ab3b73587882e8"}},
{[]byte("contents"), 7, []string{
"ed7002b439e9ac845f22357d822bac1444730fbdb6016d3ec9432297b9ec9f73",
"043a718774c572bd8a25adbeb1bfcd5c0256ae11cecf9f9c3f925d0e52beaf89"},
},
{[]byte("contents"), 3, []string{
"1143da2bc54c495c4be31d3868785d39ffdfd56df5668f0645d8f14d47647952",
"e4432baa90819aaef51d2a7f8e148bf7e679610f3173752fabb4dcb2d0f418d3",
"44ad63f60af0f6db6fdde6d5186ef78176367df261fa06be3079b6c80c8adba4"},
},
{[]byte("conconts"), 3, []string{
"1143da2bc54c495c4be31d3868785d39ffdfd56df5668f0645d8f14d47647952",
"1143da2bc54c495c4be31d3868785d39ffdfd56df5668f0645d8f14d47647952",
"44ad63f60af0f6db6fdde6d5186ef78176367df261fa06be3079b6c80c8adba4"},
},
{[]byte("contenten"), 3, []string{
"1143da2bc54c495c4be31d3868785d39ffdfd56df5668f0645d8f14d47647952",
"e4432baa90819aaef51d2a7f8e148bf7e679610f3173752fabb4dcb2d0f418d3",
"e4432baa90819aaef51d2a7f8e148bf7e679610f3173752fabb4dcb2d0f418d3"},
},
}
func TestBlocks(t *testing.T) {
for _, test := range blocksTestData {
buf := bytes.NewBuffer(test.data)
blocks, err := Blocks(buf, test.blocksize, -1, nil)
if err != nil {
t.Fatal(err)
}
if l := len(blocks); l != len(test.hash) {
t.Fatalf("Incorrect number of blocks %d != %d", l, len(test.hash))
} else {
i := 0
for off := int64(0); off < int64(len(test.data)); off += int64(test.blocksize) {
if blocks[i].Offset != off {
t.Errorf("Incorrect offset for block %d: %d != %d", i, blocks[i].Offset, off)
}
bs := test.blocksize
if rem := len(test.data) - int(off); bs > rem {
bs = rem
}
if int(blocks[i].Size) != bs {
t.Errorf("Incorrect length for block %d: %d != %d", i, blocks[i].Size, bs)
}
if h := fmt.Sprintf("%x", blocks[i].Hash); h != test.hash[i] {
t.Errorf("Incorrect block hash %q != %q", h, test.hash[i])
}
i++
}
}
}
}
var diffTestData = []struct {
a string
b string
s int
d []protocol.BlockInfo
}{
{"contents", "contents", 1024, []protocol.BlockInfo{}},
{"", "", 1024, []protocol.BlockInfo{}},
{"contents", "contents", 3, []protocol.BlockInfo{}},
{"contents", "cantents", 3, []protocol.BlockInfo{{Offset: 0, Size: 3}}},
{"contents", "contants", 3, []protocol.BlockInfo{{Offset: 3, Size: 3}}},
{"contents", "cantants", 3, []protocol.BlockInfo{{Offset: 0, Size: 3}, {Offset: 3, Size: 3}}},
{"contents", "", 3, []protocol.BlockInfo{{Offset: 0, Size: 0}}},
{"", "contents", 3, []protocol.BlockInfo{{Offset: 0, Size: 3}, {Offset: 3, Size: 3}, {Offset: 6, Size: 2}}},
{"con", "contents", 3, []protocol.BlockInfo{{Offset: 3, Size: 3}, {Offset: 6, Size: 2}}},
{"contents", "con", 3, nil},
{"contents", "cont", 3, []protocol.BlockInfo{{Offset: 3, Size: 1}}},
{"cont", "contents", 3, []protocol.BlockInfo{{Offset: 3, Size: 3}, {Offset: 6, Size: 2}}},
}
func TestDiff(t *testing.T) {
for i, test := range diffTestData {
a, _ := Blocks(bytes.NewBufferString(test.a), test.s, -1, nil)
b, _ := Blocks(bytes.NewBufferString(test.b), test.s, -1, nil)
_, d := BlockDiff(a, b)
if len(d) != len(test.d) {
t.Fatalf("Incorrect length for diff %d; %d != %d", i, len(d), len(test.d))
} else {
for j := range test.d {
if d[j].Offset != test.d[j].Offset {
t.Errorf("Incorrect offset for diff %d block %d; %d != %d", i, j, d[j].Offset, test.d[j].Offset)
}
if d[j].Size != test.d[j].Size {
t.Errorf("Incorrect length for diff %d block %d; %d != %d", i, j, d[j].Size, test.d[j].Size)
}
}
}
}
}