protected IEnumerator <T> GetEnumerator <T>()
where T : KeyStringDictionary, new()
{
Info.Refresh();
if (!Info.Exists)
{
yield break;
}
using (var stream = Info.Open(FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
using (var reader = new TsvStreamReader(stream))
{
while (!reader.EndOfStream)
{
var entry = reader.ReadEntry <T>();
if (null == entry)
{
break;
}
yield return((T)entry);
}
}
}
}
public void op_ReadEntry_whenColumnsCtor()
{
var headers = new[]
{
"A", "B"
};
using (var stream = new MemoryStream())
{
using (var writer = new StreamWriter(stream))
{
writer.WriteLine("1A\t1B");
writer.Flush();
stream.Position = 0;
using (var reader = new TsvStreamReader(stream, headers))
{
var actual = reader.ReadEntry();
Assert.Equal("A\tB", reader.Header);
Assert.Equal(1, reader.LineNumber);
Assert.Equal(1, reader.EntryNumber);
Assert.Equal("1A", actual["A"]);
Assert.Equal("1B", actual["B"]);
}
}
}
}
public void op_ReadEntry_whenUnixLF()
{
using (var stream = new MemoryStream())
{
using (var writer = new StreamWriter(stream))
{
writer.WriteLine("A\tB\n1A\t1B");
writer.Flush();
stream.Position = 0;
using (var reader = new TsvStreamReader(stream))
{
var actual = reader.ReadEntry();
Assert.Equal(2, reader.LineNumber);
Assert.Equal(1, reader.EntryNumber);
Assert.Equal("1A", actual["A"]);
Assert.Equal("1B", actual["B"]);
}
}
}
}
public void op_ReadEntry_whenMissingColumnItem()
{
using (var stream = new MemoryStream())
{
using (var writer = new StreamWriter(stream))
{
writer.WriteLine("A\tB\tC");
writer.WriteLine("1\t2");
writer.Flush();
stream.Position = 0;
using (var reader = new TsvStreamReader(stream))
{
// ReSharper disable AccessToDisposedClosure
Assert.Throws <FormatException>(() => reader.ReadEntry());
// ReSharper restore AccessToDisposedClosure
}
}
}
}
public void op_ReadEntry_whenTrailingNewLine()
{
using (var stream = new MemoryStream())
{
using (var writer = new StreamWriter(stream))
{
writer.WriteLine("A\tB");
writer.WriteLine("1A\t1B");
writer.WriteLine(string.Empty);
writer.Flush();
stream.Position = 0;
using (var reader = new TsvStreamReader(stream))
{
reader.ReadEntry();
var actual = reader.ReadEntry();
Assert.Equal(3, reader.LineNumber);
Assert.Equal(1, reader.EntryNumber);
Assert.Null(actual);
}
}
}
}
public void op_ReadEntry_whenHeaderCtor()
{
const string header = "A\tB";
using (var stream = new MemoryStream())
{
using (var writer = new StreamWriter(stream))
{
writer.WriteLine("1A\t1B");
writer.Flush();
stream.Position = 0;
using (var reader = new TsvStreamReader(stream, header))
{
Assert.Equal(header, reader.Header);
var actual = reader.ReadEntry();
Assert.Equal(1, reader.LineNumber);
Assert.Equal(1, reader.EntryNumber);
Assert.Equal("1A", actual["A"]);
Assert.Equal("1B", actual["B"]);
}
}
}
}
