Início / coding / Perguntas / 79590937
Accepted
Josh
Asked: 2025-04-24 23:06:03 +0800 CST

Produza uma barra em uma string base64 para testar a codificação base64url

  • 772

Tenho um teste de unidade para uma função segura de URL Base64 e quero ter certeza de que ele está lidando corretamente com três coisas:

  1. Substitui +por-
  2. Substitui /por_
  3. Acabamentos =na ponta

Quero que meu teste unitário tenha uma string que produza +e termine com um =da string. Mas não estou conseguindo criar o /.

public void ToBase64Url_ValidInput_ReturnsExpectedEncodedString()
{
    // Arrange
    var allAciiChars = "\0\u0001\u0002\u0003\u0004\u0005\u0006\a\b\t\n\v\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\u007f";
    var inputBytes = Encoding.UTF8.GetBytes(allAciiChars);
    var expectedEncodedString = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0-P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn8";

    // Act
    var result = inputBytes.ToBase64Url();

    // Assert
    Assert.Equal(expectedEncodedString, result);
}

O que preciso atualizar na string para produzir a barra quando ela for convertida para base64?

c#

2 respostas

  1. Best Answer

    Você precisa obter o binário 111111 em uma das etapas da codificação (antes da conversão final de binário para texto). Se você triplicar o ponto de interrogação na sua string de teste, deverá obter uma barra. Por exemplo:

    ... <=>???@ABCDEFGHIJKLMNOPQRSTUVWXYZ ...
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