我的bcrypt密码验证始终失败，说hashedPassword不是给定密码的哈希值

func validateCredentials(attemptedPassword string, actualPasswordHash string) (bool, error) {
    if err := bcrypt.CompareHashAndPassword([]byte(actualPasswordHash), []byte(attemptedPassword)); err != nil {
        fmt.Printf("validateCredentials error is %v", err)
        return false, nil
    }

    return true, nil
}

I wrote a test that looks like this:

func TestAuth_validateCredentials(t *testing.T) {
    var actualPassword = "hello123"
    actualPasswordHash, _ := bcrypt.GenerateFromPassword([]byte(actualPassword), bcrypt.MinCost)
    if valid, err := validateCredentials("username", string(actualPasswordHash)); err != nil {
        t.Error("Unexpted error: ", err)
    } else if valid {
        t.Error("Expected invalid when password is wrong")
    }
}

I keep getting this error:

validateCredentials error is crypto/bcrypt: hashedPassword is not the hash of the given passwordPASS

What am I doing wrong here?

You're passing "username" instead of actualPassword

if valid, err := validateCredentials(actualPassword, string(actualPasswordHash))