public void GetBytes_should_throw_when_value_contains_unmatched_surrogate_pair()
{
var value = "\ud800";
var bytes = new byte[CStringUtf8Encoding.GetMaxByteCount(value.Length)];
Action action = () => CStringUtf8Encoding.GetBytes(value, bytes, 0, Utf8Encodings.Strict);
action.ShouldThrow <ArgumentException>();
}
public void GetBytes_should_throw_when_value_contains_null_and_fallback_encoding_is_used()
{
var value = "\ud800\udc00\u0000";
var bytes = new byte[CStringUtf8Encoding.GetMaxByteCount(value.Length)];
Action action = () => CStringUtf8Encoding.GetBytes(value, bytes, 0, Utf8Encodings.Strict);
action.ShouldThrow <ArgumentException>().And.ParamName.Should().Be("value");
}
public void GetBytes_should_throw_when_value_contains_null(
[Values("\0", "a\0", "ab\0")] string value)
{
var bytes = new byte[CStringUtf8Encoding.GetMaxByteCount(value.Length)];
Action action = () => CStringUtf8Encoding.GetBytes(value, bytes, 0, Utf8Encodings.Strict);
action.ShouldThrow <ArgumentException>().And.ParamName.Should().Be("value");
}
public void GetMaxByteCount_should_return_expected_result(
[Values(0, 1, 2)] int charCount)
{
var expectedResult = charCount * 3;
var result = CStringUtf8Encoding.GetMaxByteCount(charCount);
result.Should().Be(expectedResult);
}
[TestCase("\ud800\udc00", 0, 4, new byte[] { 0xf0, 0x90, 0x80, 0x80 })] // surrogate pair
public void GetBytes_should_return_expected_result(
string value,
int byteIndex,
int expectedResult,
byte[] expectedBytes)
{
var bytes = new byte[CStringUtf8Encoding.GetMaxByteCount(value.Length) + byteIndex];
var result = CStringUtf8Encoding.GetBytes(value, bytes, byteIndex, Utf8Encodings.Strict);
result.Should().Be(expectedResult);
bytes.Take(byteIndex).All(b => b == 0).Should().BeTrue();
bytes.Skip(byteIndex).Take(result).Should().Equal(expectedBytes);
bytes.Skip(byteIndex + result).All(b => b == 0).Should().BeTrue();
}
