public void CannotSeekBeforeBegin()
{
// Given
var size = int.MaxValue * 2L;
var stream = new FileReaderJsInterop.InteropFileStream(0, new Tewr.Blazor.FileReader.FileInfo {
Size = size
}, null);
// When / Then
Assert.Throws <IOException>(() => stream.Seek(-1, SeekOrigin.Begin));
}
public void CannotSeekUsingUnknownOrigin()
{
// Given
var size = int.MaxValue * 2L;
var stream = new FileReaderJsInterop.InteropFileStream(0, new Tewr.Blazor.FileReader.FileInfo {
Size = size
}, null);
// When / then
Assert.Throws <ArgumentException>(() => stream.Seek(2, (SeekOrigin)55));
}
public void CanSeekInLargeFilesFromBegin()
{
// Given
var size = int.MaxValue * 2L;
var stream = new FileReaderJsInterop.InteropFileStream(0, new Tewr.Blazor.FileReader.FileInfo {
Size = size
}, null);
// When
var pos = stream.Seek(size - 1, SeekOrigin.Begin);
// Then
Assert.Equal(pos, stream.Position);
Assert.Equal(stream.Position, size - 1);
}
public void CanSeekInLargeFilesFromEndAfterEndOFFile()
{
// Given
var size = int.MaxValue * 2L;
var stream = new FileReaderJsInterop.InteropFileStream(0, new Tewr.Blazor.FileReader.FileInfo {
Size = size
}, null);
// When
var pos = stream.Seek(1, SeekOrigin.End);
// Then
Assert.Equal(pos, stream.Position);
Assert.Equal(stream.Length + 1, stream.Position);
}
public void CanSeekInLargeFilesFromCurrentWithPosition()
{
// Given
var size = int.MaxValue * 2L;
var stream = new FileReaderJsInterop.InteropFileStream(0, new Tewr.Blazor.FileReader.FileInfo {
Size = size
}, null);
// When
stream.Position = 5;
var pos = stream.Seek(1, SeekOrigin.Current);
// Then
Assert.AreEqual(pos, stream.Position);
Assert.AreEqual(stream.Position, 5 + 1);
}
