public void Proposal_Equality()
{
var proposal1 = new Proposal("Proposal");
var proposal2 = new Proposal("Proposal");
Assert.AreNotEqual(proposal1.Id, proposal2.Id);
Assert.AreEqual(proposal1.Title, proposal2.Title);
Assert.AreEqual(proposal1, proposal2);
Assert.AreEqual(proposal1, proposal1);
Assert.AreEqual(proposal2, proposal2);
Assert.IsTrue(proposal1.IsSameAs(proposal1));
Assert.IsFalse(proposal1.IsSameAs(proposal2));
}