public void GetHashCode_TwoDistinctObjects_HashCodesAreDifferent()
{
// Arrange
var timeStamp = DateTime.UtcNow;
var object1 = new SystemInformationQueueItem(new SystemInformation { MachineName = Environment.MachineName + "A", Timestamp = timeStamp });
var object2 = new SystemInformationQueueItem(new SystemInformation { MachineName = Environment.MachineName + "B", Timestamp = timeStamp });
// Act
int hashCodeObject1 = object1.GetHashCode();
int hashCodeObject2 = object2.GetHashCode();
// Assert
Assert.AreNotEqual(hashCodeObject1, hashCodeObject2);
}
public void GetHashCode_ForAllUniqueObject_AUniqueHashCodeIsReturned()
{
int numberOfItems = 10000;
var items = TestUtilities.GetSystemInformationObjects(numberOfItems);
var hashCodes = new Dictionary<int, SystemInformationQueueItem>();
for (var i = 0; i < numberOfItems; i++)
{
// Act
var object1 = new SystemInformationQueueItem(items[i]);
int generatedHashCode = object1.GetHashCode();
// Assert
Assert.IsFalse(hashCodes.ContainsKey(generatedHashCode));
hashCodes.Add(generatedHashCode, object1);
}
}
public void GetHashCode_TwoIdenticalObjects_WithDifferentEnqueueCountValues_HashCodesAreEqual()
{
// Arrange
var timeStamp = DateTime.UtcNow;
var object1 = new SystemInformationQueueItem(new SystemInformation { MachineName = Environment.MachineName, Timestamp = timeStamp })
{
EnqueuCount = 1
};
var object2 = new SystemInformationQueueItem(new SystemInformation { MachineName = Environment.MachineName, Timestamp = timeStamp })
{
EnqueuCount = 3
};
// Act
int hashCodeObject1 = object1.GetHashCode();
int hashCodeObject2 = object2.GetHashCode();
// Assert
Assert.AreEqual(hashCodeObject1, hashCodeObject2);
}
public void GetHashCode_TwoIdenticalObjects_WithDifferentEnqueueCountValues_HashCodesAreEqual()
{
// Arrange
var timeStamp = DateTime.UtcNow;
var object1 = new SystemInformationQueueItem(new SystemInformation { MachineName = Environment.MachineName, Timestamp = timeStamp })
{
EnqueuCount = 1
};
var object2 = new SystemInformationQueueItem(new SystemInformation { MachineName = Environment.MachineName, Timestamp = timeStamp })
{
EnqueuCount = 3
};
// Act
int hashCodeObject1 = object1.GetHashCode();
int hashCodeObject2 = object2.GetHashCode();
// Assert
Assert.AreEqual(hashCodeObject1, hashCodeObject2);
}
public void GetHashCode_TwoDistinctObjects_HashCodesAreDifferent()
{
// Arrange
var timeStamp = DateTime.UtcNow;
var object1 = new SystemInformationQueueItem(new SystemInformation { MachineName = Environment.MachineName + "A", Timestamp = timeStamp });
var object2 = new SystemInformationQueueItem(new SystemInformation { MachineName = Environment.MachineName + "B", Timestamp = timeStamp });
// Act
int hashCodeObject1 = object1.GetHashCode();
int hashCodeObject2 = object2.GetHashCode();
// Assert
Assert.AreNotEqual(hashCodeObject1, hashCodeObject2);
}
public void GetHashCode_ForAllUniqueObject_AUniqueHashCodeIsReturned()
{
int numberOfItems = 10000;
var items = TestUtilities.GetSystemInformationObjects(numberOfItems);
var hashCodes = new Dictionary<int, SystemInformationQueueItem>();
for (var i = 0; i < numberOfItems; i++)
{
// Act
var object1 = new SystemInformationQueueItem(items[i]);
int generatedHashCode = object1.GetHashCode();
// Assert
Assert.IsFalse(hashCodes.ContainsKey(generatedHashCode));
hashCodes.Add(generatedHashCode, object1);
}
}