// [TestCase(@"files/example_1GB.txt", @"files/example_expected.txt", 50000)]
public async Task Sort_ProducesCorrectResult(string inputFileName, string expectedOutputFileName, int batchSize)
{
// arrange
var options = new FileSorterOptions
{
BatchSize = batchSize
};
_fixture.Register(() => options);
var outFileName = FileSorter.DefaultOutFileName(inputFileName);
var sorter = _fixture.Create <FileSorter>();
// act
await sorter.Sort(inputFileName, outFileName, CancellationToken.None);
// assert
await using var outputExpectedFile = File.OpenRead(expectedOutputFileName);
using var outputExpectedReader = new StreamReader(outputExpectedFile);
await using var outputActualFile = File.OpenRead(outFileName);
using var outputActualReader = new StreamReader(outputActualFile);
while (!outputExpectedReader.EndOfStream)
{
var expectedLine = await outputExpectedReader.ReadLineAsync();
Assert.IsTrue(!outputActualReader.EndOfStream);
var actualLine = await outputActualReader.ReadLineAsync();
Assert.AreEqual(expectedLine, actualLine);
}
Assert.IsTrue(outputActualReader.EndOfStream);
}
public static void Main(string[] args)
{
string fileName;
if (args.Length < 1)
{
Console.Write("File name: ");
fileName = Console.ReadLine();
}
else
{
fileName = args[0];
}
if (!File.Exists(fileName))
{
Console.WriteLine($"File '{fileName}' doesn't exist.");
}
var options = Options.Create(new FileSorterOptions
{
BatchSize = 50000
});
var sorter = new FileSorter(options);
var outFileName = FileSorter.DefaultOutFileName(fileName);
var sw = new Stopwatch();
sw.Start();
Task.WaitAll(sorter.Sort(fileName, outFileName, CancellationToken.None));
sw.Stop();
Console.WriteLine($"Sorted. Output: '{outFileName}', elapsed: {sw.Elapsed.TotalSeconds:0.000} s.");
}