public void DefaultFromEmptyList()
{
var source = new List <string>();
var item = ExtensionMethods.FirstOrDefault(source);
Assert.IsNull(item, "The default item is incorrect.");
}
public void FirstFromEnumerable()
{
var source = new HashSet <string> {
"A", "B"
};
var item = ExtensionMethods.FirstOrDefault(source);
Assert.AreEqual("A", item, "The first item is incorrect.");
}
public void FirstFromList()
{
var source = new List <string>()
{
"A", "B"
};
var item = ExtensionMethods.FirstOrDefault(source);
Assert.AreEqual("A", item, "The first item is incorrect.");
}
public void FirstOrDefaultThrows()
{
string[] source = null;
var item = ExtensionMethods.FirstOrDefault(source);
}
