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Added a HttpResponseStreamWriter test for surrogate pairs

This commit is contained in:
Kiran Challa 2016-07-18 14:09:40 -07:00
parent e64b8e55e5
commit c5e09b0344
1 changed files with 26 additions and 0 deletions
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26
test/Microsoft.AspNetCore.WebUtilities.Tests/HttpResponseStreamWriterTest.cs
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@ -13,6 +13,8 @@ namespace Microsoft.AspNetCore.WebUtilities.Test
{
public class HttpResponseStreamWriterTest
{
private const int DefaultCharacterChunkSize = HttpResponseStreamWriter.DefaultBufferSize;
[Fact]
public async Task DoesNotWriteBOM()
{
@ -428,6 +430,30 @@ namespace Microsoft.AspNetCore.WebUtilities.Test
Assert.Equal(expectedBytes, stream.ToArray());
}
[Theory]
[InlineData(DefaultCharacterChunkSize)]
[InlineData(DefaultCharacterChunkSize * 2)]
[InlineData(DefaultCharacterChunkSize * 3)]
public async Task HttpResponseStreamWriter_WritesDataCorrectly_ForCharactersHavingSurrogatePairs(int characterSize)
{
// Arrange
// Here "𐐀" (called Deseret Long I) actually represents 2 characters. Try to make this character split across
// the boundary
var content = new string('a', characterSize - 1) + "𐐀";
var stream = new TestMemoryStream();
var writer = new HttpResponseStreamWriter(stream, Encoding.Unicode);
// Act
await writer.WriteAsync(content);
await writer.FlushAsync();
// Assert
stream.Seek(0, SeekOrigin.Begin);
var streamReader = new StreamReader(stream, Encoding.Unicode);
var actualContent = await streamReader.ReadToEndAsync();
Assert.Equal(content, actualContent);
}
private class TestMemoryStream : MemoryStream
{
public int FlushCallCount { get; private set; }