public void StringHashHasBestDistributionWithTypeAssemblyQualifiedName()
{
var hashes = ExceptionTypes
.Select(EventLogAppender.TypeHashAlgorithm)
.ToArray();
var computedHashesCount = hashes.Length;
var uniqueHashesCount = hashes.Distinct().Count();
var hashCollisionsCount = computedHashesCount - uniqueHashesCount;
var collisionPercentage = decimal.Divide(hashCollisionsCount, computedHashesCount) * 100;
Assert.That(collisionPercentage, Is.LessThan(1.5));
}
public void StringHashHasGoodDistributionWithTypeFullName()
{
EventLogAppender.TypeNameSelector = t => t.FullName;
var hashes = ExceptionTypes
.Select(EventLogAppender.TypeHashAlgorithm)
.ToArray();
var computedHashesCount = hashes.Length;
var uniqueHashesCount = hashes.Distinct().Count();
var hashCollisionsCount = computedHashesCount - uniqueHashesCount;
var collisionPercentage = decimal.Divide(hashCollisionsCount, computedHashesCount) * 100;
Assert.That(collisionPercentage, Is.LessThan(21));
}
/// <summary>
/// Verifies that the type of the exception thrown by the unit test is expected
/// </summary>
/// <param name="exception">The exception thrown by the unit test</param>
protected override void Verify(Exception exception)
{
var seleniumException = exception as SeleniumTestFailedException;
if (seleniumException != null)
{
if (AllowDerivedTypes)
{
if (!seleniumException.InnerExceptions.All(s => ExceptionTypes.Any(n => n.IsInstanceOfType(s))))
{
RethrowIfAssertException(exception);
var exp = seleniumException.InnerExceptions
.First(s => ExceptionTypes.Any(n => n.IsInstanceOfType(s)));
throw new Exception(string.Format((IFormatProvider)CultureInfo.CurrentCulture, $"Test method threw exception {exp.GetType()}, but exception {string.Join(", ", ExceptionTypes.Select(s => s.FullName))} was expected. Exception message: {exp.Message}"));
}
}
if (!seleniumException.InnerExceptions.All(s => ExceptionTypes.Any(n => s.GetType() == n)))
{
RethrowIfAssertException(exception);
var exp = seleniumException.InnerExceptions.First(s => ExceptionTypes.Any(n => s.GetType() != n));
throw new Exception(string.Format((IFormatProvider)CultureInfo.CurrentCulture, $"Test method threw exception {exp.GetType()}, but exception {string.Join(", ", ExceptionTypes.Select(s => s.FullName))} was expected. Exception message: {exp.Message}"));
}
}
else if (seleniumException == null && exception != null)
{
RethrowIfAssertException(exception);
throw new Exception($"Test method threw exception {exception.GetType()}, but exception {string.Join(", ", ExceptionTypes.Select(s => s.FullName))} was expected. Exception message: {exception.Message}", exception);
}
else
{
RethrowIfAssertException(exception);
throw new Exception(string.Format((IFormatProvider)CultureInfo.CurrentCulture, NoExceptionMessage ?? "Test method did not throw exception."));
}
}