Examples with Atom org.jpl7.Atom used on opensource projects

Example 26 with Atom

use of org.jpl7.Atom in project packages-jpl by SWI-Prolog.

the class TestJUnit method testAtomToString3.

public void testAtomToString3() {
    String name = "3";
    String toString = "'3'";
    Atom a = new Atom(name);
    assertEquals("an Atom's .toString() value is quoted iff appropriate", a.toString(), toString);
}

Example 27 with Atom

use of org.jpl7.Atom in project packages-jpl by SWI-Prolog.

the class TestJUnit method testVariableBinding3.

public void testVariableBinding3() {
    Variable X = new Variable("X");
    Term lhs = new Compound("p", new Term[] { X, X });
    Term rhs = new Compound("p", new Term[] { new Atom("a"), new Atom("b") });
    Term goal = new Compound("=", new Term[] { lhs, rhs });
    assertFalse("two references to the same (named) Variable cannot unify with differing atoms", new Query(goal).hasSolution());
}

Example 28 with Atom

use of org.jpl7.Atom in project packages-jpl by SWI-Prolog.

the class TestJUnit method testArrayToList1.

public void testArrayToList1() {
    Term l2 = Util.termArrayToList(new Term[] { new Atom("a"), new Atom("b"), new Atom("c"), new Atom("d"), new Atom("e") });
    Query q9 = new Query(new Compound("append", new Term[] { new Variable("Xs"), new Variable("Ys"), l2 }));
    assertTrue("append(Xs,Ys,[a,b,c,d,e]) has 6 solutions", q9.allSolutions().length == 6);
}

Example 29 with Atom

use of org.jpl7.Atom in project packages-jpl by SWI-Prolog.

the class TestJUnit method testRef7.

public void testRef7() {
    Term badJRef = new Compound("@", new Term[] { new Atom("foobar") });
    try {
        // should throw exception
        badJRef.jrefToObject();
        // shouldn't
        fail("@(foobar) .jrefToObject() shoulda thrown JPLException");
    // get
    // to
    // here
    } catch (JPLException e) {
        // expected exception class
        if (e.getMessage().endsWith("term is not a JRef")) {
        // OK: an appropriate exception was thrown
        } else {
            fail("@(foobar) .jrefToObject() threw wrong JPLException: " + e);
        }
    } catch (Exception e) {
        fail("@(foobar) .jrefToObject() threw wrong exception class: " + e);
    }
}

Example 30 with Atom

use of org.jpl7.Atom in project packages-jpl by SWI-Prolog.

the class TestJUnit method testRef6.

public void testRef6() {
    Term nullJRef = new Compound("@", new Term[] { new Atom("null") });
    Object nullObject = nullJRef.jrefToObject();
    assertNull("@(null) .jrefToObject() yields null", nullObject);
}