hugo/hugofs/hashing_fs_test.go
Bjørn Erik Pedersen fb8909d5b0
Use xxHash for the change detector
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
2024-07-06 16:57:16 +02:00

77 lines
1.9 KiB
Go

// Copyright 2018 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package hugofs
import (
"fmt"
"strings"
"testing"
qt "github.com/frankban/quicktest"
"github.com/spf13/afero"
)
type testHashReceiver struct {
name string
sum uint64
}
func (t *testHashReceiver) OnFileClose(name string, checksum uint64) {
t.name = name
t.sum = checksum
}
func TestHashingFs(t *testing.T) {
c := qt.New(t)
fs := afero.NewMemMapFs()
observer := &testHashReceiver{}
ofs := NewHashingFs(fs, observer)
f, err := ofs.Create("hashme")
c.Assert(err, qt.IsNil)
_, err = f.Write([]byte("content"))
c.Assert(err, qt.IsNil)
c.Assert(f.Close(), qt.IsNil)
c.Assert(observer.sum, qt.Equals, uint64(7807861979271768572))
c.Assert(observer.name, qt.Equals, "hashme")
f, err = ofs.Create("nowrites")
c.Assert(err, qt.IsNil)
c.Assert(f.Close(), qt.IsNil)
c.Assert(observer.sum, qt.Equals, uint64(17241709254077376921))
}
func BenchmarkHashingFs(b *testing.B) {
fs := afero.NewMemMapFs()
observer := &testHashReceiver{}
ofs := NewHashingFs(fs, observer)
content := []byte(strings.Repeat("lorem ipsum ", 1000))
b.ResetTimer()
for i := 0; i < b.N; i++ {
f, err := ofs.Create(fmt.Sprintf("file%d", i))
if err != nil {
b.Fatal(err)
}
_, err = f.Write(content)
if err != nil {
b.Fatal(err)
}
if err := f.Close(); err != nil {
b.Fatal(err)
}
}
}