public static void TryCopyBMPString(
PublicEncodingRules ruleSet,
string inputHex,
string expectedValue)
{
byte[] inputData = inputHex.HexToByteArray();
char[] output = new char[expectedValue.Length];
AsnReader reader = new AsnReader(inputData, (AsnEncodingRules)ruleSet);
bool copied;
int charsWritten;
if (output.Length > 0)
{
output[0] = 'a';
copied = reader.TryCopyBMPString(
output.AsSpan(0, expectedValue.Length - 1),
out charsWritten);
Assert.False(copied, "reader.TryCopyBMPString - too short");
Assert.Equal(0, charsWritten);
Assert.Equal('a', output[0]);
}
copied = reader.TryCopyBMPString(
output,
out charsWritten);
Assert.True(copied, "reader.TryCopyBMPString");
string actualValue = new string(output, 0, charsWritten);
Assert.Equal(expectedValue, actualValue);
}
private static void TryCopyBMPString_Throws_Helper(PublicEncodingRules ruleSet, byte[] inputData)
{
char[] outputData = new char[inputData.Length + 1];
outputData[0] = 'a';
int bytesWritten = -1;
AsnReader reader = new AsnReader(inputData, (AsnEncodingRules)ruleSet);
Assert.Throws <CryptographicException>(
() =>
{
reader.TryCopyBMPString(
outputData,
out bytesWritten);
});
Assert.Equal(-1, bytesWritten);
Assert.Equal('a', outputData[0]);
}