public void TestGetHashCode()
{
UnaryExpressionStub expression1 = new UnaryExpressionStub(new VariableExpression(new Variable("scooby")));
UnaryExpressionStub expression2 = new UnaryExpressionStub(new VariableExpression(new Variable("scooby")));
UnaryExpressionStub expression3 = new UnaryExpressionStub(new VariableExpression(new Variable("velma")));
Assert.IsTrue(expression1.GetHashCode() == expression2.GetHashCode(), "expression1 should have same hash code as expression2");
Assert.IsTrue(expression1.GetHashCode() != expression3.GetHashCode(), "expression1 should not have same hash code as expression3");
}
public void TestEquals()
{
UnaryExpressionStub expression1 = new UnaryExpressionStub(new VariableExpression(new Variable("scooby")));
UnaryExpressionStub expression2 = new UnaryExpressionStub(new VariableExpression(new Variable("scooby")));
UnaryExpressionStub expression3 = new UnaryExpressionStub(new VariableExpression(new Variable("velma")));
Assert.IsTrue(expression1.Equals(expression2), "expression1 should equal expression2");
Assert.IsTrue(!expression1.Equals(expression3), "expression1 should not equal expression3");
}