69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
// Copyright (C) 2016 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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// The existence of this file means we get 0% test coverage rather than no
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// test coverage at all. Remove when implementing an actual test.
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package weakhash
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import (
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"bytes"
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"context"
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"io"
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"os"
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"reflect"
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"testing"
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)
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var payload = []byte("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz")
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func TestFinder(t *testing.T) {
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f, err := os.CreateTemp("", "")
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if err != nil {
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t.Error(err)
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}
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defer os.Remove(f.Name())
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defer f.Close()
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if _, err := f.Write(payload); err != nil {
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t.Error(err)
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}
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if _, err := f.Seek(0, io.SeekStart); err != nil {
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t.Error(err)
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}
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hashes := []uint32{65143183, 65798547}
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finder, err := NewFinder(context.Background(), f, 4, hashes)
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if err != nil {
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t.Error(err)
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}
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expected := map[uint32][]int64{
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65143183: {1, 27, 53, 79},
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65798547: {2, 28, 54, 80},
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}
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actual := make(map[uint32][]int64)
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b := make([]byte, Size)
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for _, hash := range hashes {
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_, err := finder.Iterate(hash, b[:4], func(offset int64) bool {
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if !bytes.Equal(b, payload[offset:offset+4]) {
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t.Errorf("Not equal at %d: %s != %s", offset, string(b), string(payload[offset:offset+4]))
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}
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actual[hash] = append(actual[hash], offset)
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return true
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})
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if err != nil {
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t.Error(err)
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}
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}
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if !reflect.DeepEqual(actual, expected) {
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t.Errorf("Not equal: %#v != %#v", actual, expected)
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}
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}
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