def test_str(): assert str(qobj()) == 'obj' assert str(qbool()) == 'bool' assert str(qfun(qobj(), qbool())) == '(obj->bool)' assert str(qfun(qobj(), qbool())) == '(obj->bool)' assert (str(qfun(qfun(qobj(), qobj()), qbool())) == '((obj->obj)->bool)')
def test_parse_typed_variable(self): var = self.parser.parse('var:bool') assert var.name == 'var' assert var.qtype == qbool() var = self.parser.parse('var:bool->obj') assert var.name == 'var' assert var.qtype == qfun(qbool(), qobj())
def test_parse_constant_type(self): matches = [ ('bool', qbool()), ('(bool)', qbool()), ('obj', qobj()), ('obj->obj', qfun(qobj(), qobj())), ('obj->obj->obj', qfun(qobj(), qfun(qobj(), qobj()))), ('(obj->obj)->obj', qfun(qfun(qobj(), qobj()), qobj())), ('obj->bool', qfun(qobj(), qbool())), ] for string, obj in matches: assert self.parser.parse_type(string) == obj
def test_parse_operator(self): assert (self.parser.parse('not a') == term_builder.build_combination(self.not_, qterm.Variable('a', qbool()))) assert (self.parser.parse('a:obj = b:obj') == term_builder.build_binary_op(self.equals, qterm.Variable('a', qobj()), qterm.Variable('b', qobj())))
def test_unify(): assert_raises(UnificationError, unify, [qobj(), qbool()]) assert_equal(unify([qobj(), qobj()]), qobj()) assert_equal(unify([qvar(), qobj()]), qobj()) assert_equal(unify([qobj(), qvar()]), qobj()) v1 = qvar() v2 = qvar() uni = unify([v1, v2]) assert_true(uni == v1 or uni == v2) f1 = qfun(qobj(), qbool()) f2 = qfun(qobj(), qobj()) f3 = qfun(qvar(), qobj()) f4 = qfun(qvar(), qvar()) assert_raises(UnificationError, unify, [f1, f2]) assert_equal(unify([f2, f3]), f2) assert_equal(unify([f2, f4]), f2) assert_equal(unify([f3, f4]), f3)
def setup_class(cls): cls.for_all = Constant('for_all', qfun(qfun(qobj(), qbool()), qbool())) cls.exists = Constant('exists', qfun(qfun(qobj(), qbool()), qbool())) cls.not_ = Constant('not', qfun(qbool(), qbool())) eqvar = qvar() cls.equals = Constant('=', qfun(eqvar, qfun(eqvar, qbool()))) extensions = [ Type(qbool, 'bool'), Type(qobj, 'obj'), Binder(cls.for_all), Binder(cls.exists), Operator(cls.not_, 1, 'right', 100), Operator(cls.equals, 2, 'left', 200), ] cls.parser = parser.Parser(Syntax(extensions), term_builder)
def test_parse_binder(self): assert (self.parser.parse('for_all x phi') == term_builder.build_binder(self.for_all, qterm.Variable('x', qobj()), qterm.Variable('phi', qbool())))
def test_parse_abstraction(self): f = qterm.Variable('f', qfun(qbool(), qbool())) x = qterm.Variable('x', qbool()) y = qterm.Variable('y', qbool())