public void TestCastLeft()
{
{
var instance = new Either <int, string>(1);
var result = instance.CastLeft <int?>();
result.AssertLeft(1);
}
{
var instance = new Either <int, string>("test");
var result = instance.CastLeft <int?>();
result.AssertRight("test");
}
{
Assert.Throws <InvalidCastException>(() => new Either <string, int>("test").CastLeft <decimal>());
}
}