public void EncodeIntoBuffer_SurrogatePairs()
{
// Arange
TextEncoder encoder = new ConfigurableScalarTextEncoder(_ => false);
const string X = "\U00000058"; // LATIN CAPITAL LETTER X (ascii)
const string Pair = "\U0001033A"; // GOTHIC LETTER KUSMA (surrogate pair)
const string eX = "[0058]";
const string ePair = "[1033A]";
// Act & assert
Assert.Equal("", encoder.Encode(""));
Assert.Equal(eX, encoder.Encode(X)); // no iteration, block
Assert.Equal(eX + eX, encoder.Encode(X + X)); // two iterations, no block
Assert.Equal(eX + eX + eX, encoder.Encode(X + X + X)); // two iterations, block
Assert.Equal(ePair, encoder.Encode(Pair)); // one iteration, no block
Assert.Equal(ePair + ePair, encoder.Encode(Pair + Pair)); // two iterations, no block
Assert.Equal(eX + ePair, encoder.Encode(X + Pair)); // two iterations, no block
Assert.Equal(ePair + eX, encoder.Encode(Pair + X)); // one iteration, block
Assert.Equal(eX + ePair + eX, encoder.Encode(X + Pair + X)); // two iterations, block, even length
Assert.Equal(ePair + eX + ePair, encoder.Encode(Pair + X + Pair)); // three iterations, no block, odd length
}
public void EncodeUtf16_OperationStatus_SurrogateHandlingEdgeCases(char[] input, int destBufferSize, bool isFinalBlock, string expectedOutput, int expectedCharsConsumed, OperationStatus expectedResult)
{
// Arrange
var encoder = new ConfigurableScalarTextEncoder(_ => true); // allow all well-formed scalars
using BoundedMemory <char> boundedInput = BoundedMemory.AllocateFromExistingData(input);
using BoundedMemory <char> boundedOutput = BoundedMemory.Allocate <char>(destBufferSize);
// Act
OperationStatus actualResult = encoder.Encode(boundedInput.Span, boundedOutput.Span, out int actualCharsConsumed, out int actualCharsWritten, isFinalBlock);
// Assert
Assert.Equal(expectedResult, actualResult);
Assert.Equal(expectedCharsConsumed, actualCharsConsumed);
Assert.Equal(expectedOutput, boundedOutput.Span.Slice(0, actualCharsWritten).ToString());
}
public void EncodeUtf16_OperationStatus_AlphaNumericOnly(string input, int destBufferSize, string expectedOutput, int expectedCharsConsumed, OperationStatus expectedResult)
{
// Arrange
var encoder = new ConfigurableScalarTextEncoder(scalar => UnicodeUtility.IsInRangeInclusive((uint)scalar | 0x20, 'a', 'z')); // allow only [A-Za-z] unescaped
using BoundedMemory <char> boundedInput = BoundedMemory.AllocateFromExistingData <char>(input.AsSpan());
using BoundedMemory <char> boundedOutput = BoundedMemory.Allocate <char>(destBufferSize);
// Act
OperationStatus actualResult = encoder.Encode(boundedInput.Span, boundedOutput.Span, out int actualCharsConsumed, out int actualCharsWritten);
// Assert
Assert.Equal(expectedResult, actualResult);
Assert.Equal(expectedCharsConsumed, actualCharsConsumed);
Assert.Equal(expectedOutput, boundedOutput.Span.Slice(0, actualCharsWritten).ToString());
}