def test_limit(self):
r = RPN()
assert r.calc('1 1 10 LIMIT') == 1
assert r.calc('10 1 10 LIMIT') == 10
assert r.calc('0 1 10 LIMIT') is None
assert r.calc('-1 1 10 LIMIT') is None
assert r.calc('100 1 10 LIMIT') is None
def test_basic_vars(self):
r = RPN()
assert r.calc('foo bar +', {
'foo': 2,
'bar': 3
}) == 5
def test_multiple(self):
r = RPN()
assert r.calc('2 3 + 4 *') == 20
def test_complex(self):
r = RPN()
assert r.calc('3 4 2 * 1 5 - 2 3 ^ ^ / +') == 3.0001220703125
def test_less_than(self):
r = RPN()
self._assert_result(r.calc('1 2 LT'))
self._assert_result(r.calc('2 2 LT'), False)
self._assert_result(r.calc('3 2 LT'), False)
def test_if(self):
r = RPN()
assert r.calc('1 2 3 IF') == 2
assert r.calc('0 2 3 IF') == 3
def test_not_equal(self):
r = RPN()
self._assert_result(r.calc('2 1 NE'))
self._assert_result(r.calc('2 2 NE'), False)
def test_equal(self):
r = RPN()
self._assert_result(r.calc('2 2 EQ'))
self._assert_result(r.calc('2 1 EQ'), False)
def test_greater_than_or_equal(self):
r = RPN()
self._assert_result(r.calc('2 1 GE'))
self._assert_result(r.calc('2 2 GE'))
self._assert_result(r.calc('2 3 GE'), False)
def test_greater_than(self):
r = RPN()
self._assert_result(r.calc('2 1 GT'))
self._assert_result(r.calc('2 2 GT'), False)
self._assert_result(r.calc('2 3 GT'), False)
def test_less_than_or_equal(self):
r = RPN()
self._assert_result(r.calc('1 2 LE'))
self._assert_result(r.calc('2 2 LE'))
self._assert_result(r.calc('3 2 LE'), False)
def test_min(self):
r = RPN()
assert r.calc('1 2 MIN') == 1
assert r.calc('3 2 MIN') == 2
def test_max(self):
r = RPN()
assert r.calc('1 2 MAX') == 2
assert r.calc('3 2 MAX') == 3