go hash_test 源码
golang hash_test 代码
文件路径：/src/cmd/go/internal/cache/hash_test.go
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cache
import (
"fmt"
"os"
"testing"
)
func TestHash(t *testing.T) {
oldSalt := hashSalt
hashSalt = nil
defer func() {
hashSalt = oldSalt
}()
h := NewHash("alice")
h.Write([]byte("hello world"))
sum := fmt.Sprintf("%x", h.Sum())
want := "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"
if sum != want {
t.Errorf("hash(hello world) = %v, want %v", sum, want)
}
}
func TestHashFile(t *testing.T) {
f, err := os.CreateTemp("", "cmd-go-test-")
if err != nil {
t.Fatal(err)
}
name := f.Name()
fmt.Fprintf(f, "hello world")
defer os.Remove(name)
if err := f.Close(); err != nil {
t.Fatal(err)
}
var h ActionID // make sure hash result is assignable to ActionID
h, err = FileHash(name)
if err != nil {
t.Fatal(err)
}
sum := fmt.Sprintf("%x", h)
want := "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"
if sum != want {
t.Errorf("hash(hello world) = %v, want %v", sum, want)
}
}
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