public void Should_evaluate_empty_clause_to_true()
{
// Arrange
Clause clause = new Clause(new List <SignedLiteral>()
{
});
// Act
bool clauseEvaluation = clause.Evaluate();
// Assert
Assert.IsTrue(clauseEvaluation);
}
public void Should_evaluate_clause_with_mixed_valued_literals_to_true()
{
// Arrange
SignedLiteral a = new SignedLiteral("A", false, false);
SignedLiteral b = new SignedLiteral("B", false, true);
SignedLiteral c = new SignedLiteral("C", false, false);
Clause clause = new Clause(new List <SignedLiteral>()
{
a, b, c
});
// Act
bool clauseEvaluation = clause.Evaluate();
// Assert
Assert.IsTrue(clauseEvaluation);
}
public void Should_evaluate_clauses_with_negated_values_correctly()
{
// Arrange
SignedLiteral a = new SignedLiteral("A", true, false); // evaluates to true
SignedLiteral b = new SignedLiteral("B", false, false); // evaluates to false
SignedLiteral c = new SignedLiteral("C", false, true); // evaluates to true
SignedLiteral d = new SignedLiteral("D", true, true); // evaluates to false
Clause clause1 = new Clause(new List <SignedLiteral>()
{
a, b, c
});
Clause clause2 = new Clause(new List <SignedLiteral>()
{
a, c
});
Clause clause3 = new Clause(new List <SignedLiteral>()
{
a, b
});
Clause clause4 = new Clause(new List <SignedLiteral>()
{
b, d
});
// Act
bool clauseEvaluation1 = clause1.Evaluate();
bool clauseEvaluation2 = clause2.Evaluate();
bool clauseEvaluation3 = clause3.Evaluate();
bool clauseEvaluation4 = clause4.Evaluate();
// Assert
Assert.IsTrue(clauseEvaluation1);
Assert.IsTrue(clauseEvaluation2);
Assert.IsTrue(clauseEvaluation3);
Assert.IsFalse(clauseEvaluation4);
}