public void TestUnionWhenThrowingExceptions()
{
string[] oldEmployees = null;
string[] newEmployees = { "Andreea", "George", "Andrei", "Ionut" };
var unionComparer = new EqualityComparer <string>();
Assert.Throws <ArgumentNullException>(() => LINQFunctions.Union(oldEmployees, newEmployees, unionComparer));
}
public void TestUnion()
{
string[] oldEmployees = { "Andreea", "Maria", "Ioana" };
string[] newEmployees = { "Andreea", "George", "Andrei", "Ionut" };
var unionComparer = new EqualityComparer <string>();
var result = LINQFunctions.Union(oldEmployees, newEmployees, unionComparer);
int counter = 0;
foreach (var current in result)
{
if (current.Equals("Andreea"))
{
counter++;
}
}
Assert.Equal(1, counter);
Assert.Equal(6, result.Count());
}
