public void testFourSuccessiveNotsTransformation()
{
Sentence fourNots = parser.parse("~~~~A");
Sentence transformed = ConvertToCNF.convert(fourNots);
Assert.AreEqual("A", transformed.ToString());
}
public void testDeMorgan2()
{
Sentence dm = parser.parse("~(A | B)");
Sentence transformed = ConvertToCNF.convert(dm);
Assert.AreEqual("~A & ~B", transformed.ToString());
}
public void testImplicationTransformation()
{
Sentence impl = parser.parse("A => B");
Sentence transformedImpl = ConvertToCNF.convert(impl);
Assert.AreEqual("~A | B", transformedImpl.ToString());
}
public void testBiConditionalTransformation()
{
Sentence bic = parser.parse("A <=> B");
Sentence transformedBic = ConvertToCNF.convert(bic);
Assert.AreEqual("(~A | B) & (~B | A)", transformedBic.ToString());
}
public void testDistributingOrCorrectly()
{
Sentence s = parser.parse("A & B & C & D & (E | (F & G)) & H & I & J & K");
Sentence transformed = ConvertToCNF.convert(s);
Assert.AreEqual("A & B & C & D & (E | F) & (E | G) & H & I & J & K", transformed.ToString());
}
public void testSymbolTransform()
{
Sentence symbol = parser.parse("A");
Sentence transformed = ConvertToCNF.convert(symbol);
Assert.AreEqual("A", transformed.ToString());
}
public void testNested()
{
Sentence nested = parser.parse("A | (B | (C | (D & E)))");
Sentence transformed = ConvertToCNF.convert(nested);
Assert.AreEqual("(A | B | C | D) & (A | B | C | E)", transformed.ToString());
nested = parser.parse("A | (B | (C & (D & E)))");
transformed = ConvertToCNF.convert(nested);
Assert.AreEqual("(A | B | C) & (A | B | D) & (A | B | E)", transformed.ToString());
nested = parser.parse("A | (B | (C & (D & (E | F))))");
transformed = ConvertToCNF.convert(nested);
Assert.AreEqual("(A | B | C) & (A | B | D) & (A | B | E | F)", transformed.ToString());
nested = parser.parse("(A | (B | (C & D))) | E | (F | (G | (H & I)))");
transformed = ConvertToCNF.convert(nested);
Assert.AreEqual("(A | B | C | E | F | G | H) & (A | B | D | E | F | G | H) & (A | B | C | E | F | G | I) & (A | B | D | E | F | G | I)", transformed.ToString());
nested = parser.parse("(((~P | ~Q) => ~(P | Q)) => R)");
transformed = ConvertToCNF.convert(nested);
Assert.AreEqual("(~P | ~Q | R) & (P | Q | R)", transformed.ToString());
nested = parser.parse("~(((~P | ~Q) => ~(P | Q)) => R)");
transformed = ConvertToCNF.convert(nested);
Assert.AreEqual("(P | ~P) & (Q | ~P) & (P | ~Q) & (Q | ~Q) & ~R", transformed.ToString());
}
public void testAimaExample()
{
Sentence aimaEg = parser.parse("B11 <=> P12 | P21");
Sentence transformed = ConvertToCNF.convert(aimaEg);
Assert.AreEqual("(~B11 | P12 | P21) & (~P12 | B11) & (~P21 | B11)", transformed.ToString());
}
public void testOrDistribution2()
{
Sentence or = parser.parse("A | B & C");
Sentence transformed = ConvertToCNF.convert(or);
Assert.AreEqual("(A | B) & (A | C)", transformed.ToString());
}
public void testIssue78()
{
// ( ( NOT J1007 ) OR ( NOT ( OR J1008 J1009 J1010 J1011 J1012 J1013 J1014 J1015 ) ) )
Sentence issue78Eg = parser.parse("( ( ~ J1007 ) | ( ~ ( J1008 | J1009 | J1010 | J1011 | J1012 | J1013 | J1014 | J1015 ) ) )");
Sentence transformed = ConvertToCNF.convert(issue78Eg);
Assert.AreEqual("(~J1007 | ~J1008) & (~J1007 | ~J1009) & (~J1007 | ~J1010) & (~J1007 | ~J1011) & (~J1007 | ~J1012) & (~J1007 | ~J1013) & (~J1007 | ~J1014) & (~J1007 | ~J1015)", transformed.ToString());
}
public void testBasicSentenceTransformation()
{
Sentence and = parser.parse("A & B");
Sentence transformedAnd = ConvertToCNF.convert(and);
Assert.AreEqual("A & B", transformedAnd.ToString());
Sentence or = parser.parse("A | B");
Sentence transformedOr = ConvertToCNF.convert(or);
Assert.AreEqual("A | B", transformedOr.ToString());
Sentence not = parser.parse("~C");
Sentence transformedNot = ConvertToCNF.convert(not);
Assert.AreEqual("~C", transformedNot.ToString());
}