public void testEquals1()
{
Edit e1 = new Edit(1, 2, 3, 4);
Edit e2 = new Edit(1, 2, 3, 4);
Assert.IsTrue(e1.Equals(e1));
Assert.IsTrue(e1.Equals(e2));
Assert.IsTrue(e2.Equals(e1));
Assert.AreEqual(e1.GetHashCode(), e2.GetHashCode());
Assert.IsFalse(e1.Equals(""));
}