public void Evaluate_method_should_return_true_if_preconditions_match_facts() { // arrange _facts.Add(new Fact() { Assertion = Guid.NewGuid().ToString() }); var fact = new Fact { Assertion = Guid.NewGuid().ToString() }; _precondition.SetFact(fact); // act var result = _precondition.Evaluate(_facts); // assert Assert.True(result); }