public async Task Write_String()
{
// Arrange
var pool = new TestArrayPool();
var inner = new StringWriter();
var writer = new PagedBufferedTextWriter(pool, inner);
// These numbers chosen to hit boundary conditions in buffer lengths
Assert.Equal(4096, Content.Length); // Update these numbers if this changes.
var chunkSizes = new int[] { 3, 1021, 1023, 1023, 1, 1, 1024 };
// Act
var offset = 0;
foreach (var chunkSize in chunkSizes)
{
var chunk = new string(Content, offset, chunkSize);
writer.Write(chunk);
offset += chunkSize;
}
await writer.FlushAsync();
// Assert
Assert.Equal <char>(Content, inner.ToString().ToCharArray());
}
public void Write_CharArray_Bounded_Null()
{
// Arrange
var pool = new TestArrayPool();
var inner = new StringWriter();
var writer = new PagedBufferedTextWriter(pool, inner);
// Act & Assert
Assert.Throws <ArgumentNullException>("buffer", () => writer.Write(null, 0, 0));
}
public async Task Write_CharArray_Null()
{
// Arrange
var pool = new TestArrayPool();
var inner = new StringWriter();
var writer = new PagedBufferedTextWriter(pool, inner);
// Act
writer.Write((char[])null);
await writer.FlushAsync();
// Assert
Assert.Empty(inner.ToString());
}
public async Task SynchronousWrites_FollowedByAsyncWriteCharArray_WritesAllContent()
{
// Arrange
var pool = new TestArrayPool();
var inner = new StringWriter();
var writer = new PagedBufferedTextWriter(new TestArrayPool(), inner);
// Act
writer.Write('a');
writer.Write(new[] { 'b', 'c', 'd' });
writer.Write("ef");
await writer.WriteAsync(new[] { 'g', 'h', 'i' });
// Assert
Assert.Equal("abcdefghi", inner.ToString());
}
public async Task FlushAsync_WritesContentToInner_WithLargeArrays()
{
// Arrange
var pool = new RentMoreArrayPool();
var inner = new StringWriter();
var writer = new PagedBufferedTextWriter(pool, inner);
for (var i = 0; i < Content.Length; i++)
{
writer.Write(Content[i]);
}
// Act
await writer.FlushAsync();
// Assert
Assert.Equal <char>(Content, inner.ToString().ToCharArray());
}
public async Task Write_Char()
{
// Arrange
var pool = new TestArrayPool();
var inner = new StringWriter();
var writer = new PagedBufferedTextWriter(pool, inner);
// Act
for (var i = 0; i < Content.Length; i++)
{
writer.Write(Content[i]);
}
await writer.FlushAsync();
// Assert
Assert.Equal <char>(Content, inner.ToString().ToCharArray());
}
public async Task FlushAsync_ReturnsPages()
{
// Arrange
var pool = new TestArrayPool();
var inner = new StringWriter();
var writer = new PagedBufferedTextWriter(pool, inner);
for (var i = 0; i < Content.Length; i++)
{
writer.Write(Content[i]);
}
// Act
await writer.FlushAsync();
// Assert
Assert.Equal(3, pool.Returned.Count);
}
public async Task Write_CharArray()
{
// Arrange
var pool = new TestArrayPool();
var inner = new StringWriter();
var writer = new PagedBufferedTextWriter(pool, inner);
// These numbers chosen to hit boundary conditions in buffer lengths
Assert.Equal(4096, Content.Length); // Update these numbers if this changes.
var chunkSizes = new int[] { 3, 1021, 1023, 1023, 1, 1, 1024 };
// Act
var offset = 0;
foreach (var chunkSize in chunkSizes)
{
var chunk = new char[chunkSize];
for (var j = 0; j < chunkSize; j++)
{
chunk[j] = Content[offset + j];
}
writer.Write(chunk);
offset += chunkSize;
}
await writer.FlushAsync();
// Assert
var array = inner.ToString().ToCharArray();
for (var i = 0; i < Content.Length; i++)
{
Assert.Equal(Content[i], array[i]);
}
Assert.Equal <char>(Content, inner.ToString().ToCharArray());
}