private static SourceText FromLargeTextWriter(string source, Encoding encoding, SourceHashAlgorithm checksumAlgorithm)
{
using (var writer = new LargeTextWriter(encoding, checksumAlgorithm, source.Length))
{
writer.Write(source);
return(writer.ToSourceText());
}
}
public void TestLargeTextWriterReusesLargeChunks()
{
var chunk1 = "this is the large text".ToArray();
var largeText = CreateLargeText(chunk1);
// chunks are considered large because they are bigger than the expected size
var writer = new LargeTextWriter(largeText.Encoding, largeText.ChecksumAlgorithm, 10);
largeText.Write(writer);
var newText = (LargeText)writer.ToSourceText();
Assert.NotSame(largeText, newText);
Assert.Equal(1, GetChunks(newText).Length);
Assert.Same(chunk1, GetChunks(newText)[0]);
}
public void TestLargeTextWriterDoesNotResuseSmallChunks()
{
var text = SourceText.From("small preamble");
var chunk1 = "this is the large text".ToArray();
var largeText = CreateLargeText(chunk1);
// chunks are considered small because they fit within the buffer (which is the expected length for this test)
var writer = new LargeTextWriter(largeText.Encoding, largeText.ChecksumAlgorithm, chunk1.Length * 4);
// write preamble so buffer is allocated and has contents.
text.Write(writer);
// large text fits within the remaining buffer
largeText.Write(writer);
var newText = (LargeText)writer.ToSourceText();
Assert.NotSame(largeText, newText);
Assert.Equal(text.Length + largeText.Length, newText.Length);
Assert.Equal(1, GetChunks(newText).Length);
Assert.NotSame(chunk1, GetChunks(newText)[0]);
}
