@Test
public void testToCNFDimacsClauses() {
Formula a = new Var("a");
Formula b = new Var("b");
Formula c = new Var("c");
Formula f = new Formula(a.not());
assertTrue("!a".equals(f.toString()));
List<IVecInt> clauses = f.toCNFDimacsClauses();
assertTrue(clauses.size() == 1);
IVecInt literals = clauses.get(0);
// expect {-1} array
assertTrue(literals.get(0) == -1);
f = new Formula(b.or(a.not()).or(c));
assertTrue("b or !a or c".equals(f.toString()));
clauses = f.toCNFDimacsClauses();
assertTrue(clauses.size() == 1);
literals = clauses.get(0);
// expect {2, -1, 3} array
assertTrue(literals.get(0) == 2);
assertTrue(literals.get(1) == -1);
assertTrue(literals.get(2) == 3);
}
@Test(expected = org.sat4j.specs.ContradictionException.class)
public void testGetModels_contradiction() throws ContradictionException, TimeoutException {
Formula f = new Var("a");
Formula g = f.and(f.not());
Formula instance = Formula.newInstanceforSAT(g);
}