public void RealFile_FileCreationIsTracked()
{
// Arrange
var testDir = CreateTestSpecificDirectory();
var filePathToMonitor = Path.Combine(testDir, "settingsFile.txt");
using (var singleFileMonitor = new SingleFileMonitor(filePathToMonitor, new TestLogger()))
{
var testWrapper = new WaitableFileMonitor(singleFileMonitor);
testWrapper.EventCount.Should().Be(0);
// Act: create the file
File.WriteAllText(filePathToMonitor, "initial text");
testWrapper.WaitForEventAndThrowIfMissing();
testWrapper.EventCount.Should().Be(1);
}
}
public void Real_File_ChangesToOtherFiles_AreIgnored()
{
// Arrange
var testDir = CreateTestSpecificDirectory();
var filePathToMonitor = Path.Combine(testDir, "settingsFile.txt");
var otherFileInDir = Path.Combine(testDir, "otherSettingsFile.txt");
using (var firstMonitor = new SingleFileMonitor(filePathToMonitor, new TestLogger()))
{
var waitableFileMonitor = new WaitableFileMonitor(firstMonitor);
waitableFileMonitor.EventCount.Should().Be(0);
// 1. Create the other file
File.WriteAllText(otherFileInDir, "initial other text");
System.Threading.Thread.Sleep(1000);
waitableFileMonitor.EventCount.Should().Be(0);
}
}
public void RealFile_FileDeletionIsTracked()
{
// Arrange
var testLogger = new TestLogger(logToConsole: true, logThreadId: true);
var testDir = CreateTestSpecificDirectory();
var filePathToMonitor = Path.Combine(testDir, "settingsFile.txt");
File.WriteAllText(filePathToMonitor, "contents");
using (var singleFileMonitor = new SingleFileMonitor(filePathToMonitor, testLogger))
{
var testWrapper = new WaitableFileMonitor(singleFileMonitor);
testWrapper.EventCount.Should().Be(0);
// Act: delete the file
File.Delete(filePathToMonitor);
testWrapper.WaitForEventAndThrowIfMissing();
testWrapper.EventCount.Should().Be(1);
}
}
public void RealFile_RenameToTrackedFileName_IsTracked()
{
// Arrange
var testDir = CreateTestSpecificDirectory();
var filePathToMonitor = Path.Combine(testDir, "settingsFile.txt");
var otherFilePath = Path.ChangeExtension(filePathToMonitor, "other");
File.WriteAllText(otherFilePath, "contents");
using (var singleFileMonitor = new SingleFileMonitor(filePathToMonitor, new TestLogger()))
{
var testWrapper = new WaitableFileMonitor(singleFileMonitor);
testWrapper.EventCount.Should().Be(0);
// Act: rename the file to the tracked name
File.Move(otherFilePath, filePathToMonitor);
testWrapper.WaitForEventAndThrowIfMissing();
testWrapper.EventCount.Should().Be(1);
}
}
public void RealFile_RenameFromTrackedFileName_IsTracked()
{
// Arrange
var testLogger = new TestLogger(logToConsole: true, logThreadId: true);
var testDir = CreateTestSpecificDirectory();
var filePathToMonitor = Path.Combine(testDir, "settingsFile.txt");
File.WriteAllText(filePathToMonitor, "contents");
using (var singleFileMonitor = new SingleFileMonitor(filePathToMonitor, testLogger))
{
var testWrapper = new WaitableFileMonitor(singleFileMonitor);
testWrapper.EventCount.Should().Be(0);
// Act: rename the file from the tracked name
var renamedFile = Path.ChangeExtension(filePathToMonitor, "moved");
File.Move(filePathToMonitor, renamedFile);
testWrapper.WaitForEventAndThrowIfMissing();
testWrapper.EventCount.Should().Be(1);
}
}
public void RealFile_MultipleOperations_NoDuplicates()
{
// Repeated file operations will raise lots of events.
// We don't want duplicates.
// Arrange
var testLogger = new TestLogger(logToConsole: true, logThreadId: true);
var testDir = CreateTestSpecificDirectory();
var filePathToMonitor = Path.Combine(testDir, "settingsFile.txt");
int totalEventCount = 0;
for (int i = 0; i < 100; i++)
{
TestContext.WriteLine($"Iteration: {i}");
// Cleanup
if (File.Exists(filePathToMonitor))
{
File.Delete(filePathToMonitor);
}
testBody();
}
// We might lose some events if they happen too close together, but we should never
// have more events than there are logical file operations.
// There are 5 operations per iteration -> expecting close to 500.
TestContext.WriteLine($"Number of recorded events: {totalEventCount}");
totalEventCount.Should().BeInRange(340, 500);
void testBody()
{
const int pauseBetweenOpsInMs = 125;
using (var singleFileMonitor = new SingleFileMonitor(filePathToMonitor, testLogger))
{
var testWrapper = new WaitableFileMonitor(singleFileMonitor);
testWrapper.EventCount.Should().Be(0);
// 1. Create the file
File.WriteAllText(filePathToMonitor, "initial text");
testWrapper.PauseForEvent(pauseBetweenOpsInMs);
// 2. Amend the file
File.AppendAllText(filePathToMonitor, " more text");
testWrapper.PauseForEvent(pauseBetweenOpsInMs);
// 3. Rename from the tracked name
var renamedFile = Path.ChangeExtension(filePathToMonitor, "moved");
File.Move(filePathToMonitor, renamedFile);
testWrapper.PauseForEvent(pauseBetweenOpsInMs);
// 4. Rename back to the tracked name
File.Move(renamedFile, filePathToMonitor);
testWrapper.PauseForEvent(pauseBetweenOpsInMs);
// 5. Delete
File.Delete(filePathToMonitor);
testWrapper.PauseForEvent(pauseBetweenOpsInMs);
totalEventCount += testWrapper.EventCount;
}
};
}