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- // Copyright (C) 2016 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 https://mozilla.org/MPL/2.0/.
- // The existence of this file means we get 0% test coverage rather than no
- // test coverage at all. Remove when implementing an actual test.
- package weakhash
- import (
- "bytes"
- "context"
- "io"
- "io/ioutil"
- "os"
- "reflect"
- "testing"
- )
- var payload = []byte("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")
- func TestFinder(t *testing.T) {
- f, err := ioutil.TempFile("", "")
- if err != nil {
- t.Error(err)
- }
- defer os.Remove(f.Name())
- defer f.Close()
- if _, err := f.Write(payload); err != nil {
- t.Error(err)
- }
- if _, err := f.Seek(0, io.SeekStart); err != nil {
- t.Error(err)
- }
- hashes := []uint32{65143183, 65798547}
- finder, err := NewFinder(context.Background(), f, 4, hashes)
- if err != nil {
- t.Error(err)
- }
- expected := map[uint32][]int64{
- 65143183: {1, 27, 53, 79},
- 65798547: {2, 28, 54, 80},
- }
- actual := make(map[uint32][]int64)
- b := make([]byte, Size)
- for _, hash := range hashes {
- _, err := finder.Iterate(hash, b[:4], func(offset int64) bool {
- if !bytes.Equal(b, payload[offset:offset+4]) {
- t.Errorf("Not equal at %d: %s != %s", offset, string(b), string(payload[offset:offset+4]))
- }
- actual[hash] = append(actual[hash], offset)
- return true
- })
- if err != nil {
- t.Error(err)
- }
- }
- if !reflect.DeepEqual(actual, expected) {
- t.Errorf("Not equal: %#v != %#v", actual, expected)
- }
- }
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