public void GetDuplicates_Returns_Duplicates_When_There_Exists_Duplicate()
{
const int duplicate = 1;
foreach (var d in UtilityHelpers.GetDuplicates <int>(new List <int> {
duplicate, 2, 3, duplicate
}))
{
Assert.Equal(duplicate, d);
}
}
public void GetDuplicates_Returns_Empty_When_Input_Is_Empty()
{
Assert.Empty(UtilityHelpers.GetDuplicates(new List <int>()));
}
public void GetDuplicates_Returns_Empty_When_Input_Is_Null()
{
Assert.Empty(UtilityHelpers.GetDuplicates <int>(null));
}
public void GetDuplicates_Returns_Empty_When_There_Exists_No_Duplicates()
{
Assert.Empty(UtilityHelpers.GetDuplicates <int>(new List <int> {
1, 2, 3
}));
}