public void ShouldAddNoItems()
{
var source = new List <int> {
1, 2, 3
};
var initial = source.ToList();
CollectionExtensions.AddRange(source, Enumerable.Empty <int>());
CollectionAssert.AreEqual(source, initial);
}
public void ShouldThrowWhenNoSourceSpecified()
{
try
{
CollectionExtensions.AddRange(null, new int[] { 1, 2, 3 });
Assert.Fail("Allowed to invoke from null");
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(ArgumentNullException));
Assert.AreEqual("collection", ((ArgumentNullException)ex).ParamName);
}
}
public void ShouldAddItems()
{
var source = new List <int> {
1, 2, 3
};
var add = new List <int> {
4, 5, 6
};
CollectionExtensions.AddRange(source, add);
CollectionAssert.IsSubsetOf(add, source);
}
public void ShouldThrowWhenNoCollectionToAddSpecified()
{
var source = new List <int> {
1, 2, 3
};
try
{
CollectionExtensions.AddRange(source, null);
Assert.Fail("Allowed to add from null");
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(ArgumentNullException));
Assert.AreEqual("items", ((ArgumentNullException)ex).ParamName);
}
}
