public static void TryCopyIA5StringBytes_Success_CER_MinConstructedLength()
{
// CER says that the maximum encoding length for a IA5String primitive
// is 1000, and that a constructed form must be used for values greater
// than 1000 bytes, with segments dividing up for each thousand
// [1000, 1000, ..., len%1000].
//
// So our smallest constructed form is 1001 bytes, [1000, 1]
//
// 36 80 (indefinite constructed IA5 string)
// 04 82 03 E9 (primitive octet string, 1000 bytes)
// [1000 content bytes]
// 04 01 (primitive octet string, 1 byte)
// pp
// 00 00 (end of contents, 0 bytes)
// 1011 total.
byte[] input = new byte[1011];
int offset = 0;
// CONSTRUCTED IA5STRING (Indefinite)
input[offset++] = 0x36;
input[offset++] = 0x80;
// OCTET STRING (1000)
input[offset++] = 0x04;
input[offset++] = 0x82;
input[offset++] = 0x03;
input[offset++] = 0xE8;
// Primitive 1: (65 65 :: 61 61) (1000)
input[offset++] = 0x65;
input[offset] = 0x65;
offset += 997;
input[offset++] = 0x61;
input[offset++] = 0x61;
// OCTET STRING (1)
input[offset++] = 0x04;
input[offset++] = 0x01;
// Primitive 2: One more byte
input[offset] = 0x2E;
byte[] expected = new byte[1001];
offset = 0;
expected[offset++] = 0x65;
expected[offset] = 0x65;
offset += 997;
expected[offset++] = 0x61;
expected[offset++] = 0x61;
expected[offset] = 0x2E;
byte[] output = new byte[1001];
AsnReader reader = new AsnReader(input, AsnEncodingRules.CER);
bool success = reader.TryCopyIA5StringBytes(output,
out int bytesWritten);
Assert.True(success, "reader.TryCopyIA5StringBytes");
Assert.Equal(1001, bytesWritten);
Assert.Equal(
expected.ByteArrayToHex(),
output.ByteArrayToHex());
}