public void IsChangedAndAcceptChangesTest()
{
EntityGraphTestsDomainContext ctx = new EntityGraphTestsDomainContext();
ctx.As.Attach(a);
var graph = new EntityGraph(a, new FullEntityGraphShape());
Assert.IsFalse(graph.IsChanged);
a.B.name = "Changed";
Assert.IsTrue(graph.IsChanged);
graph.AcceptChanges();
Assert.IsFalse(graph.IsChanged);
}