public void LineCount_OnManyThreads_ShouldAlwaysGetTheSameResult([ValueSource("Files")] ITextFile file)
{
const int NumCalls = 10;
var countedFile = new CountedTextFile(file, f => new DiyLazy<FileLineCount>(f));
var lineCounts = Enumerable.Range(0, NumCalls).AsParallel().Select(i => countedFile.LineCount).ToList();
Assert.That(lineCounts.Distinct().Count(), 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_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_ShouldOnlyReadFileOnce([ValueSource("Files")] ITextFile file)
{
const int NumCalls = 10;
ILazy<FileLineCount> lazy = null;
var countedFile = new CountedTextFile(file, f => lazy = new DiyLazy<FileLineCount>(f));
Enumerable.Range(0, NumCalls).AsParallel().Select(i => countedFile.LineCount).ToList();
switch (lazy.Mode)
{
case LazyThreadSafetyMode.PublicationOnly:
Assert.Ignore("This lazy does not guarantee only one execution, on all threads - not an error");
break;
case LazyThreadSafetyMode.ExecutionAndPublication:
Assert.That(countedFile.NumberOfCallsToCountLines, Is.EqualTo(1));
break;
}
}
public void LineCount_OnManyThreads_ShouldOnlyReadFileOnce([ValueSource("Files")] ITextFile file)
{
const int NumCalls = 10;
ILazy <FileLineCount> lazy = null;
var countedFile = new CountedTextFile(file, f => lazy = new DiyLazy <FileLineCount>(f));
Enumerable.Range(0, NumCalls).AsParallel().Select(i => countedFile.LineCount).ToList();
switch (lazy.Mode)
{
case LazyThreadSafetyMode.PublicationOnly:
Assert.Ignore("This lazy does not guarantee only one execution, on all threads - not an error");
break;
case LazyThreadSafetyMode.ExecutionAndPublication:
Assert.That(countedFile.NumberOfCallsToCountLines, Is.EqualTo(1));
break;
}
}
public void LineCount_ShouldNotReadTheFile_UntilLineCountIsCalled()
{
var countedFile = new CountedTextFile(EmbeddedFiles.Medium);
Assert.That(countedFile.NumberOfCallsToCountLines, Is.EqualTo(0));
}
public void LineCount_ShouldNotReadTheFile_UntilLineCountIsCalled()
{
var countedFile = new CountedTextFile(EmbeddedFiles.Medium, f => new DiyLazy<FileLineCount>(f));
Assert.That(countedFile.NumberOfCallsToCountLines, Is.EqualTo(0));
}
