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https://github.com/gohugoio/hugo.git
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fb8909d5b0
Much faster compared to MD5: ``` name old time/op new time/op delta HashingFs-10 21.3µs ± 2% 3.2µs ±17% -84.96% (p=0.029 n=4+4) name old alloc/op new alloc/op delta HashingFs-10 12.9kB ± 0% 12.8kB ± 1% -1.31% (p=0.029 n=4+4) name old allocs/op new allocs/op delta HashingFs-10 10.0 ± 0% 7.0 ± 0% -30.00% (p=0.029 n=4+4) ``` Updates #12643
77 lines
1.9 KiB
Go
77 lines
1.9 KiB
Go
// Copyright 2018 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hugofs
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import (
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"fmt"
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"strings"
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"testing"
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qt "github.com/frankban/quicktest"
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"github.com/spf13/afero"
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)
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type testHashReceiver struct {
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name string
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sum uint64
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}
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func (t *testHashReceiver) OnFileClose(name string, checksum uint64) {
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t.name = name
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t.sum = checksum
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}
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func TestHashingFs(t *testing.T) {
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c := qt.New(t)
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fs := afero.NewMemMapFs()
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observer := &testHashReceiver{}
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ofs := NewHashingFs(fs, observer)
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f, err := ofs.Create("hashme")
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c.Assert(err, qt.IsNil)
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_, err = f.Write([]byte("content"))
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c.Assert(err, qt.IsNil)
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c.Assert(f.Close(), qt.IsNil)
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c.Assert(observer.sum, qt.Equals, uint64(7807861979271768572))
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c.Assert(observer.name, qt.Equals, "hashme")
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f, err = ofs.Create("nowrites")
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c.Assert(err, qt.IsNil)
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c.Assert(f.Close(), qt.IsNil)
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c.Assert(observer.sum, qt.Equals, uint64(17241709254077376921))
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}
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func BenchmarkHashingFs(b *testing.B) {
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fs := afero.NewMemMapFs()
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observer := &testHashReceiver{}
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ofs := NewHashingFs(fs, observer)
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content := []byte(strings.Repeat("lorem ipsum ", 1000))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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f, err := ofs.Create(fmt.Sprintf("file%d", i))
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if err != nil {
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b.Fatal(err)
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}
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_, err = f.Write(content)
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if err != nil {
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b.Fatal(err)
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}
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if err := f.Close(); err != nil {
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b.Fatal(err)
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}
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}
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}
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