@Test public void testToString() { final Constant constant = Constant.create("emptyset"); Assert.assertEquals("§emptyset", constant.toString()); final Variable variable = Variable.create("var"); Assert.assertEquals("$var", variable.toString()); final Function function = Function.create("add", constant, variable); Assert.assertEquals("\\add(§emptyset,$var)", function.toString()); final Attribute attribute = Attribute.create("element", function, constant, variable); Assert.assertEquals("%element(\\add(§emptyset,$var),§emptyset,$var)", attribute.toString()); final Quantifier ex = Quantifier.create("exists", variable, attribute); Assert.assertEquals("*exists$var%element(\\add(§emptyset,$var),§emptyset,$var)", ex.toString()); final Quantifier all = Quantifier.create("forall", variable, attribute); Assert.assertEquals( "*forall$var%element(\\add(§emptyset,$var),§emptyset,$var)", all.toString()); final LogicalConnective connective = LogicalConnective.create("and", ex, all); Assert.assertEquals( "&and(*exists$var%element(\\add(§emptyset,$var),§emptyset,$var),*forall$var%element(\\add(§emptyset,$var),§emptyset,$var))", connective.toString()); }