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from util.generic.maybe cimport TMaybe, Nothing
import pytest
import unittest
def _check_from_py(TMaybe[int] x):
return x.Defined()
def _check_to_py_value():
cdef TMaybe[int] tmp = TMaybe[int](42)
return tmp
def _check_to_py_nothing():
cdef TMaybe[int] tmp = Nothing()
return tmp
class TestMaybe(unittest.TestCase):
def test_ctor1(self):
cdef TMaybe[int] tmp = TMaybe[int]()
self.assertFalse(tmp.Defined())
def test_ctor2(self):
cdef TMaybe[int] tmp = TMaybe[int](42)
self.assertTrue(tmp.Defined())
self.assertEqual(tmp.GetRef(), 42)
def test_ctor3(self):
cdef TMaybe[int] tmp = Nothing()
self.assertFalse(tmp.Defined())
def test_operator_assign(self):
cdef TMaybe[int] tmp
tmp = 42
self.assertTrue(tmp.Defined())
self.assertEqual(tmp.GetRef(), 42)
def test_compare(self):
cdef TMaybe[int] tmp1 = 17
cdef TMaybe[int] tmp2 = 42
cdef TMaybe[int] nothing
# ==
self.assertTrue(tmp1 == 17)
self.assertTrue(tmp1 == tmp1)
self.assertTrue(nothing == nothing)
self.assertFalse(tmp1 == 16)
self.assertFalse(tmp1 == tmp2)
self.assertFalse(tmp1 == nothing)
# !=
self.assertTrue(tmp1 != 16)
self.assertTrue(tmp1 != tmp2)
self.assertTrue(tmp1 != nothing)
self.assertFalse(tmp1 != 17)
self.assertFalse(tmp1 != tmp1)
self.assertFalse(nothing != nothing)
# <
self.assertTrue(nothing < tmp1)
self.assertTrue(nothing < tmp2)
self.assertTrue(tmp1 < tmp2)
self.assertTrue(nothing < 0)
self.assertTrue(tmp1 < 18)
self.assertFalse(nothing < nothing)
self.assertFalse(tmp1 < tmp1)
self.assertFalse(tmp2 < tmp1)
self.assertFalse(tmp1 < 16)
# <=
self.assertTrue(nothing <= nothing)
self.assertTrue(nothing <= tmp1)
self.assertTrue(nothing <= tmp2)
self.assertTrue(tmp1 <= tmp1)
self.assertTrue(tmp1 <= tmp2)
self.assertTrue(nothing <= 0)
self.assertTrue(tmp1 <= 18)
self.assertFalse(tmp2 <= tmp1)
self.assertFalse(tmp1 <= 16)
# >
self.assertTrue(tmp1 > nothing)
self.assertTrue(tmp2 > nothing)
self.assertTrue(tmp2 > tmp1)
self.assertTrue(tmp1 > 16)
self.assertFalse(nothing > nothing)
self.assertFalse(nothing > 0)
self.assertFalse(tmp1 > tmp1)
self.assertFalse(tmp1 > tmp2)
self.assertFalse(tmp1 > 18)
# >=
self.assertTrue(nothing >= nothing)
self.assertTrue(tmp1 >= nothing)
self.assertTrue(tmp2 >= nothing)
self.assertTrue(tmp2 >= tmp1)
self.assertTrue(tmp1 >= tmp1)
self.assertTrue(tmp1 >= 16)
self.assertFalse(nothing >= 0)
self.assertFalse(tmp1 >= tmp2)
self.assertFalse(tmp1 >= 18)
def test_construct_in_place(self):
cdef TMaybe[int] tmp
tmp.ConstructInPlace(42)
self.assertTrue(tmp.Defined())
self.assertEqual(tmp.GetRef(), 42)
def test_clear(self):
cdef TMaybe[int] tmp = 42
tmp.Clear()
self.assertFalse(tmp.Defined())
def test_defined(self):
cdef TMaybe[int] tmp
self.assertFalse(tmp.Defined())
self.assertTrue(tmp.Empty())
tmp = 42
self.assertTrue(tmp.Defined())
self.assertFalse(tmp.Empty())
def test_check_defined(self):
cdef TMaybe[int] tmp
with pytest.raises(RuntimeError):
tmp.CheckDefined()
tmp = 42
tmp.CheckDefined()
def test_get(self):
cdef TMaybe[int] tmp = 42
cdef int* p = tmp.Get()
self.assertTrue(p != NULL)
self.assertEqual(p[0], 42)
def test_get_ref(self):
cdef TMaybe[int] tmp = 42
self.assertTrue(tmp.Defined())
self.assertEqual(tmp.GetRef(), 42)
def test_get_or_else(self):
cdef TMaybe[int] tmp = 42
self.assertEqual(tmp.GetOrElse(13), 42)
tmp.Clear()
self.assertEqual(tmp.GetOrElse(13), 13)
def test_or_else(self):
cdef TMaybe[int] tmp = 42
cdef TMaybe[int] nothing
self.assertFalse(nothing.OrElse(nothing).Defined())
self.assertEqual(tmp.OrElse(nothing).GetRef(), 42)
self.assertEqual(nothing.OrElse(tmp).GetRef(), 42)
self.assertEqual(tmp.OrElse(tmp).GetRef(), 42)
def test_cast(self):
cdef TMaybe[int] tmp = 42
cdef TMaybe[char] tmp2 = tmp.Cast[char]()
self.assertEqual(tmp2.GetRef(), 42)
def test_swap(self):
cdef TMaybe[int] tmp1 = 42
cdef TMaybe[int] tmp2
tmp2.Swap(tmp1)
self.assertFalse(tmp1.Defined())
self.assertEqual(tmp2.GetRef(), 42)
def test_from_py(self):
self.assertTrue(_check_from_py(42))
self.assertFalse(_check_from_py(None))
with self.assertRaises(TypeError):
_check_from_py("ttt")
def test_to_py(self):
self.assertEqual(_check_to_py_value(), 42)
self.assertEqual(_check_to_py_nothing(), None)
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