public void NumberStreamReaderReadContentFromEnd()
{
using (var stream = new MemoryStream(Encoding.ASCII.GetBytes("-10\n450")))
{
using (var numbersReader = new NumberStreamReader(stream))
{
numbersReader.Stream.Seek(0, SeekOrigin.End);
var result = numbersReader.ReadContentFromEnd(2).FirstOrDefault();
Assert.IsNotNull(result);
Assert.AreEqual(2, result.Length);
Assert.AreEqual(53, result[0]);
Assert.AreEqual(48, result[1]);
numbersReader.Stream.Seek(-1, SeekOrigin.End);
result = numbersReader.ReadContentFromEnd(2).FirstOrDefault();
Assert.IsNotNull(result);
Assert.AreEqual(2, result.Length);
Assert.AreEqual(52, result[0]);
Assert.AreEqual(53, result[1]);
numbersReader.Stream.Seek(1, SeekOrigin.Begin);
result = numbersReader.ReadContentFromEnd(2).FirstOrDefault();
Assert.IsNotNull(result);
Assert.AreEqual(1, result.Length);
Assert.AreEqual(NumberStreamReader.Number_Zero, result[0]);
}
}
}
private static NumberStreamReader PrepareStreamReader(Stream stream)
{
var reader = new NumberStreamReader(stream);
try
{
reader.PrepareFileInfoAsync(false).Wait();
}
catch
{
reader.Dispose();
throw;
}
return(reader);
}
public void NumberStreamReaderNotNegative()
{
using (var stream = new MemoryStream(Encoding.ASCII.GetBytes("10\n450")))
{
using (var numbersReader = new NumberStreamReader(stream))
{
numbersReader.PrepareFileInfoAsync(false).Wait();
Assert.IsNotNull(numbersReader.Info);
Assert.IsFalse(numbersReader.Info.IsInvalid);
Assert.IsFalse(numbersReader.Info.IsNegative);
Assert.IsNotNull(numbersReader.Info.RealPartPosition);
Assert.AreEqual(0, numbersReader.Info.RealPartPosition.From);
Assert.AreEqual(1, numbersReader.Info.RealPartPosition.To);
}
}
}
public void FullWorkflowTest_2longAnd1_Substraction()
{
using (var stream1 = new MemoryStream(Encoding.ASCII.GetBytes(long.MaxValue.ToString() + long.MaxValue.ToString())))
using (var numbersReader1 = new NumberStreamReader(stream1))
using (var stream2 = new MemoryStream(Encoding.ASCII.GetBytes("1")))
using (var numbersReader2 = new NumberStreamReader(stream2))
using (var resultStream = new MemoryStream())
{
NumberFilesManager manager = new NumberFilesManager(
stream1, stream2, resultStream, Operation.Substraction);
manager.DoArithmeticOperation().Wait();
//Assert.AreEqual("92233720368547758079223372036854775806".TrimStart('0').Length, resultStream.Length);
resultStream.Seek(0, SeekOrigin.Begin);
using (var streamReader = new StreamReader(resultStream))
Assert.AreEqual("92233720368547758079223372036854775806", streamReader.ReadLine().TrimStart('0'));
}
}
public void FullWorkflowTest_3And100_Substraction()
{
using (var stream1 = new MemoryStream(Encoding.ASCII.GetBytes("+000003")))
using (var numbersReader1 = new NumberStreamReader(stream1))
using (var stream2 = new MemoryStream(Encoding.ASCII.GetBytes("100")))
using (var numbersReader2 = new NumberStreamReader(stream2))
using (var resultStream = new MemoryStream())
{
NumberFilesManager manager = new NumberFilesManager(
stream1, stream2, resultStream, Operation.Substraction);
manager.DoArithmeticOperation().Wait();
//Assert.AreEqual(3, resultStream.Length);
resultStream.Seek(0, SeekOrigin.Begin);
using (var streamReader = new StreamReader(resultStream))
Assert.AreEqual("-0097", streamReader.ReadLine().TrimStart('0'));
}
}
public void NumberStreamReaderNegativeAndComments()
{
using (var stream = new MemoryStream(Encoding.ASCII.GetBytes("-10\n450\nBLABLAtest\n\nggsgfd\n")))
{
using (var numbersReader = new NumberStreamReader(stream))
{
numbersReader.PrepareFileInfoAsync(false).Wait();
Assert.IsNotNull(numbersReader.Info);
Assert.IsFalse(numbersReader.Info.IsInvalid);
Assert.IsTrue(numbersReader.Info.IsNegative);
Assert.IsNotNull(numbersReader.Info.RealPartPosition);
Assert.AreEqual(1, numbersReader.Info.RealPartPosition.From);
Assert.AreEqual(2, numbersReader.Info.RealPartPosition.To);
;
}
}
}
public void FullWorkflowTest_1And41_Addition()
{
using (var stream1 = new MemoryStream(Encoding.ASCII.GetBytes("1\r\nasdd")))
using (var numbersReader1 = new NumberStreamReader(stream1))
using (var stream2 = new MemoryStream(Encoding.ASCII.GetBytes("41\r\nasdas")))
using (var numbersReader2 = new NumberStreamReader(stream2))
using (var resultStream = new MemoryStream())
{
NumberFilesManager manager = new NumberFilesManager(
stream1, stream2, resultStream, Operation.Addition);
manager.DoArithmeticOperation().Wait();
//Assert.AreEqual(1, resultStream.Length);
resultStream.Seek(0, SeekOrigin.Begin);
using (var streamReader = new StreamReader(resultStream))
Assert.AreEqual("42", streamReader.ReadLine().TrimStart('0'));
}
}
