public void LineCount_OnManyThreads_ShouldOnlyReadFileOnce([ValueSource("Files")] ITextFile file)
{
const int NumCalls = 10;
var countedFile = new CountedTextFile(file);
Enumerable.Range(0, NumCalls).AsParallel().Select(i => countedFile.LineCount).ToList();
Assert.That(countedFile.NumberOfCallsToCountLines, Is.EqualTo(1));
}
public void LineCount_OnManyThreads_ShouldAlwaysGetTheSameResult([ValueSource("Files")] ITextFile file)
{
const int NumCalls = 10;
var countedFile = new CountedTextFile(file);
var lineCounts = Enumerable.Range(0, NumCalls).AsParallel().Select(i => countedFile.LineCount).ToList();
Assert.That(lineCounts.Distinct().Count(), Is.EqualTo(1));
}
public void LineCount_ShouldNotReadTheFile_UntilLineCountIsCalled()
{
var countedFile = new CountedTextFile(EmbeddedFiles.Medium);
Assert.That(countedFile.NumberOfCallsToCountLines, Is.EqualTo(0));
}