public void WriteLockReturnsFalseIfUnknownException()
{
var fileSystem = Substitute.For <ICalamariFileSystem>();
var lockFilePath = "fake path";
var lockIo = new LockIo(fileSystem);
fileSystem.FileExists(lockFilePath).Returns(true);
fileSystem.OpenFileExclusively(lockFilePath, Arg.Any <FileMode>(), Arg.Any <FileAccess>())
.Returns(x => { throw new Exception("Unknown exception"); });
var currentProcess = System.Diagnostics.Process.GetCurrentProcess();
var result = lockIo.WriteLock(lockFilePath, new FileLock(currentProcess.Id, currentProcess.ProcessName, Thread.CurrentThread.ManagedThreadId, 636114372739676700));
Assert.That(result, Is.False);
}
public void WriteLockDoesNotOverwriteLockFileIfItsIdenticalToWhatWeAreWantingToWrite()
{
var fileSystem = Substitute.For <ICalamariFileSystem>();
var lockFilePath = "fake path";
var lockIo = new LockIo(fileSystem);
fileSystem.FileExists(lockFilePath).Returns(true);
var currentProcess = System.Diagnostics.Process.GetCurrentProcess();
var fileContent = $"{{\"__type\":\"FileLock:#Calamari.Integration.Processes.Semaphores\",\"ProcessId\":{currentProcess.Id},\"ProcessName\":\"{currentProcess.ProcessName}\",\"ThreadId\":{Thread.CurrentThread.ManagedThreadId},\"Timestamp\":636114372739676700}}";
fileSystem.OpenFileExclusively(lockFilePath, FileMode.Open, FileAccess.Read)
.Returns(x => new MemoryStream(Encoding.UTF8.GetBytes(fileContent)));
var lockFile = lockIo.ReadLock(lockFilePath);
lockIo.WriteLock(lockFilePath, lockFile);
}
public void WriteLockDeletesLockIfUnableToDeserialise()
{
var fileSystem = Substitute.For <ICalamariFileSystem>();
var lockFilePath = "fake path";
var lockIo = new LockIo(fileSystem);
fileSystem.FileExists(lockFilePath).Returns(true);
var currentProcess = System.Diagnostics.Process.GetCurrentProcess();
var expectedFileContent = $"{{\"__type\":\"FileLock:#Calamari.Integration.Processes.Semaphores\",\"ProcessId\":{currentProcess.Id},\"ProcessName\":\"{currentProcess.ProcessName}\",\"ThreadId\":{Thread.CurrentThread.ManagedThreadId},\"Timestamp\":636114372739676700}}";
fileSystem.OpenFileExclusively(lockFilePath, FileMode.Open, FileAccess.Read)
.Returns(x => new MemoryStream(Encoding.UTF8.GetBytes("non deserialisable content")), x => new MemoryStream(Encoding.UTF8.GetBytes(expectedFileContent)));
fileSystem.OpenFileExclusively(lockFilePath, FileMode.CreateNew, FileAccess.Write)
.Returns(x => new MemoryStream());
var result = lockIo.WriteLock(lockFilePath, new FileLock(currentProcess.Id, currentProcess.ProcessName, Thread.CurrentThread.ManagedThreadId, 636114372739676700));
fileSystem.Received().DeleteFile(lockFilePath);
Assert.That(result, Is.True);
}
public void WriteLockOverwritesLockFileIfTimestampIsDifferent()
{
var fileSystem = Substitute.For <ICalamariFileSystem>();
var lockFilePath = "fake path";
var lockIo = new LockIo(fileSystem);
fileSystem.FileExists(lockFilePath).Returns(true);
var currentProcess = System.Diagnostics.Process.GetCurrentProcess();
var fileContent = $"{{\"__type\":\"FileLock:#Calamari.Integration.Processes.Semaphores\",\"ProcessId\":{currentProcess.Id},\"ProcessName\":\"{currentProcess.ProcessName}\",\"ThreadId\":{Thread.CurrentThread.ManagedThreadId},\"Timestamp\":636114372739676700}}";
fileSystem.OpenFileExclusively(lockFilePath, FileMode.Open, FileAccess.Read)
.Returns(x => new MemoryStream(Encoding.UTF8.GetBytes(fileContent)));
var lockFile = (FileLock)lockIo.ReadLock(lockFilePath);
lockFile.Timestamp = lockFile.Timestamp + 1;
fileSystem.OpenFileExclusively(lockFilePath, FileMode.Create, FileAccess.Write)
.Returns(x => new MemoryStream());
var result = lockIo.WriteLock(lockFilePath, lockFile);
Assert.That(result, Is.True);
}