public void GetHashCode_TwoIdenticalObjects_BothUninitialized_HashCodesAreEqual()
{
// Arrange
var repositoryConfiguration1 = new SourceRepositoryConfiguration();
var repositoryConfiguration2 = new SourceRepositoryConfiguration();
// Act
int hashCodeObject1 = repositoryConfiguration1.GetHashCode();
int hashCodeObject2 = repositoryConfiguration2.GetHashCode();
// Assert
Assert.AreEqual(hashCodeObject1, hashCodeObject2);
}
public void GetHashCode_SameHashCodeIsReturnedEveryTimeTheMethodIsCalled_AsLongAsTheObjectDoesNotChange()
{
// Arrange
string repositoryName = "Some Repository";
string repositoryUrl = "http://example.com";
var repositoryConfiguration = new SourceRepositoryConfiguration { Name = repositoryName, Url = new Uri(repositoryUrl) };
int expectedHashcode = repositoryConfiguration.GetHashCode();
for (var i = 0; i < 100; i++)
{
// Act
repositoryConfiguration.Name = repositoryName;
repositoryConfiguration.Url = new Uri(repositoryUrl);
int generatedHashCode = repositoryConfiguration.GetHashCode();
// Assert
Assert.AreEqual(expectedHashcode, generatedHashCode);
}
}
public void GetHashCode_TwoIdenticalObjects_BothInitialized_HashCodesAreEqual()
{
// Arrange
var repositoryConfiguration1 = new SourceRepositoryConfiguration { Name = "Some Repository", Url = new Uri("http://example.com") };
var repositoryConfiguration2 = new SourceRepositoryConfiguration { Name = "Some Repository", Url = new Uri("http://example.com") };
// Act
int hashCodeObject1 = repositoryConfiguration1.GetHashCode();
int hashCodeObject2 = repositoryConfiguration2.GetHashCode();
// Assert
Assert.AreEqual(hashCodeObject1, hashCodeObject2);
}
public void GetHashCode_ForAllUniqueObject_AUniqueHashCodeIsReturned()
{
var hashCodes = new Dictionary<int, SourceRepositoryConfiguration>();
for (var i = 0; i < 10000; i++)
{
// Act
var repositoryConfiguration = new SourceRepositoryConfiguration
{ Name = Guid.NewGuid().ToString(), Url = new Uri("http://" + Guid.NewGuid().ToString()) };
int generatedHashCode = repositoryConfiguration.GetHashCode();
// Assert
Assert.IsFalse(hashCodes.ContainsKey(generatedHashCode));
hashCodes.Add(generatedHashCode, repositoryConfiguration);
}
}