public void DetectsCollision()
{
string pw = TestValues.GetPw(2);
string foundPw = string.Empty;
var logic = new LogicImplementation();
logic.CollisionFound += (p) => { foundPw = p; };
logic.ProgressChanged += (c, l) => { };
try
{
logic.StartSearchCollisionsTask(Sha1Hash.CalculateFromString(pw));
var startTime = DateTime.Now;
while ((foundPw == string.Empty) && ((DateTime.Now - startTime).TotalMilliseconds < 1000))
{
Thread.Sleep(5);
}
}
catch (Exception ex)
{
Assert.Fail($"Logic - \'StartSearchCollisionsTask\' method throws an exception: {ex.GetType().ToString()} - {ex.Message} ");
}
logic.AbortSearch();
Assert.IsFalse((foundPw == string.Empty), $"Logic - does not return a collision through its 'CollisionFound' event.");
Assert.IsTrue((pw == foundPw), $"Logic - returns wrong value for a collision: \'{foundPw}\', expected: \'{pw}\'.");
}
public void HonorsAbortRequest()
{
string pw = TestValues.GetPw(5);
int eventCounter = 0;
var logic = new LogicImplementation();
logic.CollisionFound += (p) => { };
logic.ProgressChanged += (c, l) => { eventCounter++; };
var startTime = DateTime.Now;
try
{
logic.StartSearchCollisionsTask(Sha1Hash.CalculateFromString(pw));
startTime = DateTime.Now;
while ((eventCounter == 0) && ((DateTime.Now - startTime).TotalMilliseconds < 500))
{
Thread.Sleep(5);
}
}
catch (Exception ex)
{
Assert.Fail($"Logic - \'StartSearchCollisionsTask\' method throws an exception: {ex.GetType().ToString()} - {ex.Message} ");
}
logic.AbortSearch();
eventCounter = 0;
startTime = DateTime.Now;
while ((eventCounter <= 1) && ((DateTime.Now - startTime).TotalMilliseconds < 200))
{
Thread.Sleep(5);
}
Assert.IsTrue((eventCounter <= 1), $"Logic - AbortSearch does not stop background Task.");
}
public void HonorsReportInterval()
{
int testInterval = 20;
string pw = TestValues.GetPw(5);
ulong pwCount = 0;
var intervals = new List <int>();
var previousTime = DateTime.Now;
var logic = new LogicImplementation();
var cancelSource = new CancellationTokenSource();
var cancelToken = cancelSource.Token;
var progress = new Progress <ulong>((count) =>
{
pwCount = count;
DateTime t = DateTime.Now;
intervals.Add((int)(t - previousTime).TotalMilliseconds);
previousTime = t;
});
var collisionFound = new Progress <string>((result) => { });
logic.ReportInterval = testInterval;
var task = Task.Run(() => { logic.SearchCollisions(Sha1Hash.CalculateFromString(pw), progress, collisionFound, cancelToken); });
var startTime = DateTime.Now;
while ((intervals.Count() < 4) && ((DateTime.Now - startTime).TotalMilliseconds < 500))
{
Thread.Sleep(5);
}
Assert.IsFalse((intervals.Count() == 0), $"SearchCollisions - does not report progress through its 'progress' object.");
cancelSource.Cancel();
intervals.RemoveAt(0);
int interval = (intervals[0] + intervals[1] + intervals[2]) / 3;
Assert.IsTrue((Math.Abs(testInterval - interval) < 20),
$"SearchCollisions - does not report progress at requested interval of {testInterval}ms, was {interval}ms.");
}
private void buttonCalculateHash_Click(object sender, EventArgs e)
{
string password = textBoxPassword.Text;
password = password.ToUpper();
passwordHash = Sha1Hash.CalculateFromString(password).ToString();
textBoxHash.Text = passwordHash;
textBoxPassword.Text = password;
buttonAbort.Enabled = true;
buttonSearchCollisions.Enabled = true;
}
public void CanStartSearchAfterAbort()
{
// start and abort a search.
string pw = TestValues.GetPw(5);
string foundPw = string.Empty;
int eventCounter = 0;
var logic = new LogicImplementation();
logic.CollisionFound += (p) => { foundPw = p; };
logic.ProgressChanged += (c, l) => { eventCounter++; };
var startTime = DateTime.Now;
try
{
logic.StartSearchCollisionsTask(Sha1Hash.CalculateFromString(pw));
startTime = DateTime.Now;
while ((eventCounter == 0) && ((DateTime.Now - startTime).TotalMilliseconds < 500))
{
Thread.Sleep(5);
}
}
catch (Exception ex)
{
Assert.Fail($"Logic - \'StartSearchCollisionsTask\' method throws an exception: {ex.GetType().ToString()} - {ex.Message} ");
}
logic.AbortSearch();
eventCounter = 0;
startTime = DateTime.Now;
while ((eventCounter <= 1) && ((DateTime.Now - startTime).TotalMilliseconds < 200))
{
Thread.Sleep(5);
}
Assert.IsTrue((eventCounter <= 1), $"Logic - AbortSearch does not stop background Task.");
// and start a second one
pw = TestValues.GetPw(2);
foundPw = string.Empty;
try
{
logic.StartSearchCollisionsTask(Sha1Hash.CalculateFromString(pw));
startTime = DateTime.Now;
while ((foundPw == string.Empty) && ((DateTime.Now - startTime).TotalMilliseconds < 1000))
{
Thread.Sleep(5);
}
}
catch (Exception ex)
{
Assert.Fail($"Logic - \'StartSearchCollisionsTask\' method throws an exception when started after an abort request: {ex.GetType().ToString()} - {ex.Message} ");
}
Assert.IsFalse((foundPw == string.Empty), $"Logic - does not return a collision when started after an abort request.");
logic.AbortSearch();
}
public void ReportsProgress()
{
string pw = TestValues.GetPw(5);
ulong pwCount = 0;
var logic = new LogicImplementation();
var cancelSource = new CancellationTokenSource();
var cancelToken = cancelSource.Token;
var progress = new Progress <ulong>((count) => { pwCount = count; });
var collisionFound = new Progress <string>((result) => { });
var task = Task.Run(() => { logic.SearchCollisions(Sha1Hash.CalculateFromString(pw), progress, collisionFound, cancelToken); });
var startTime = DateTime.Now;
while ((pwCount == 0) && ((DateTime.Now - startTime).TotalMilliseconds < 500))
{
Thread.Sleep(5);
}
cancelSource.Cancel();
Assert.IsFalse((pwCount == 0), $"SearchCollisions - does not report progress through its 'progress' object.");
}
public void ChecksForNullEvents()
{
string pw = TestValues.GetPw(5);
var logic = new LogicImplementation();
try
{
logic.StartSearchCollisionsTask(Sha1Hash.CalculateFromString(pw));
var startTime = DateTime.Now;
while ((DateTime.Now - startTime).TotalMilliseconds < 200)
{
Thread.Sleep(5);
}
}
catch (Exception ex)
{
Assert.Fail($"Logic - \'StartSearchCollisionsTask\' method throws an exception: {ex.GetType().ToString()} - {ex.Message} ");
}
logic.AbortSearch();
}
public void DetectsCollision()
{
string pw = TestValues.GetPw(2);
string foundPw = string.Empty;
var logic = new LogicImplementation();
var cancelSource = new CancellationTokenSource();
var cancelToken = cancelSource.Token;
var progress = new Progress <ulong>((count) => { });
var collisionFound = new Progress <string>((result) => { foundPw = result; cancelSource.Cancel(); });
var task = Task.Run(() => { logic.SearchCollisions(Sha1Hash.CalculateFromString(pw), progress, collisionFound, cancelToken); });
var startTime = DateTime.Now;
while ((foundPw == string.Empty) && ((DateTime.Now - startTime).TotalMilliseconds < 1000))
{
Thread.Sleep(5);
}
Assert.IsFalse((foundPw == string.Empty), $"SearchCollisions - does not return a collision through its 'collisionFound' progress object.");
Assert.IsTrue((pw == foundPw), $"SearchCollisions - returns wrong value for a collision: \'{foundPw}\', expected: \'{pw}\'.");
cancelSource.Cancel();
}
public void HonorsCancelRequest()
{
string pw = TestValues.GetPw(5);
ulong pwCount = 0;
var logic = new LogicImplementation();
var cancelSource = new CancellationTokenSource();
var cancelToken = cancelSource.Token;
var progress = new Progress <ulong>((count) => { pwCount = count; });
var collisionFound = new Progress <string>((result) => { });
var task = Task.Run(() => { logic.SearchCollisions(Sha1Hash.CalculateFromString(pw), progress, collisionFound, cancelToken); });
var startTime = DateTime.Now;
while ((pwCount == 0) && ((DateTime.Now - startTime).TotalMilliseconds < 500))
{
Thread.Sleep(5);
}
cancelSource.Cancel();
var taskAborted = task.Wait(300);
Assert.IsTrue(taskAborted, $"SearchCollisions - does not stop Task after 'Cancel' request.");
}
public void SearchCollisions(Sha1Hash hash, IProgress <ulong> progress, IProgress <string> collisionFound, CancellationToken cancelToken)
{
ulong count = 0;
PasswordGenerator passwordGenerator = new PasswordGenerator();
foreach (string password in passwordGenerator)
{
if (hash == Sha1Hash.CalculateFromString(password))
{
collisionFound.Report(password);
break;
}
lengthTestedPassword = passwordGenerator.PasswordLength;
count++;
progress.Report(count);
Thread.Sleep(50);
if (cancelToken.IsCancellationRequested)
{
break;
}
}
}
public void ReportsProgress()
{
string pw = TestValues.GetPw(5);
ulong pwCount = 0;
var logic = new LogicImplementation();
logic.CollisionFound += (p) => { };
logic.ProgressChanged += (c, l) => { pwCount = c; };
try
{
logic.StartSearchCollisionsTask(Sha1Hash.CalculateFromString(pw));
var startTime = DateTime.Now;
while ((pwCount == 0) && ((DateTime.Now - startTime).TotalMilliseconds < 500))
{
Thread.Sleep(5);
}
}
catch (Exception ex)
{
Assert.Fail($"Logic - \'StartSearchCollisionsTask\' method throws an exception: {ex.GetType().ToString()} - {ex.Message} ");
}
logic.AbortSearch();
Assert.IsFalse((pwCount == 0), $"Logic does not report # of passwords tested through its 'ProgressChanged' event.");
}
