英文:
Proper testing method for function in go
问题
我是你的中文翻译助手，以下是你要翻译的内容：
我刚开始学习Go语言，并开始尝试测试。我的方法返回一个包含MD5哈希值的[]byte。
func myHash(s string) []byte {
h := md5.New()
io.WriteString(h, s)
return h.Sum(nil)
}
这个方法运行正常，哈希值看起来也没问题，但是当我使用下面的方法进行测试时：
func TestMyHash(t *testing.T) {
s := "linux"
bf := "e206a54e97690cce50cc872dd70ee896"
x := myHash(s)
if !bytes.Equal(x, []byte(bf)) {
t.Errorf("myHash ...")
}
}
测试总是失败。起初我以为可能是将字符串转换为[]byte或反之的问题，但是尝试了多次后，我只能在这里提问了。
你能给我一个测试函数的示例吗？我是否漏掉了必要的东西？
提前感谢。
英文:
I'm new to go and started to play around with testing.
My method returns a []byte with a md5 hash in it.
func myHash(s string) []byte {
h := md5.New()
io.WriteString(h, s)
return h.Sum(nil)
}
It's working and the hashes look ok, but when I'm testing it with this method:
func TestMyHash(t *testing.T) {
s := "linux"
bf := ("e206a54e97690cce50cc872dd70ee896")
x := hashor(s)
if !bytes.Equal(x, []byte(bf)) {
t.Errorf("myHash ...")
}
}
It will always fail. First I thought it could be some issue with the casting of a string to []byte or vice versa, but after trying ot over and over again I just need to ask here.
Can you give me an example how to test my function? Do I miss something necessary?
Thanks in advance.
答案1
得分: 6
你可能正在将哈希的原始字节与哈希的十六进制格式进行比较。你可能想要像这样做：
got := fmt.Sprintf("%034x", myHash("linux"))
want := "00e206a54e97690cce50cc872dd70ee896"
if got != want {
t.Errorf("got %q, want %q", got, want)
}
英文:
You are probably comparing the raw bytes of the hash with the hexadecimal formatted version of a hash. You might want to do something like this:
got := fmt.Sprintf("%034x", myHash("linux"))
want := "00e206a54e97690cce50cc872dd70ee896"
if got != want {
t.Errorf("got %q, want %q", got, want)
}
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