def test_left_floor_and_ceiling(self):
iterable = [4,5,1,2,3,6]
expected = [
(None, None) # 4
, (0 , None) # 5
, (None, 0 ) # 1
, (2 , 0 ) # 2
, (3 , 0 ) # 3
, (1 , None) # 6
]
index = 0
for fac in left_floor_and_ceiling(iterable):
self.assertEqual(fac, expected[index])
index += 1
iterable = [4,1,2,5,3]
expected = [
(-1 , 5 ) # 4
, (-1 , 0 ) # 1
, (1 , 0 ) # 2
, (0 , 5 ) # 5
, (2 , 0 ) # 3
]
index = 0
for fac in left_floor_and_ceiling(iterable, default_floor=-1, default_ceiling=5):
self.assertEqual(fac, expected[index])
index += 1
iterable = [1,2,3]
expected = [
(None, None) # 1
, (0 , None) # 2
, (1 , None) # 3
]
index = 0
for fac in left_floor_and_ceiling(iterable):
self.assertEqual(fac, expected[index])
index += 1
iterable = [3,2,1]
expected = [
(None, None) # 3
, (None, 0 ) # 2
, (None, 1 ) # 1
]
index = 0
for fac in left_floor_and_ceiling(iterable):
self.assertEqual(fac, expected[index])
index += 1
def _pattern_details(self):
"""Subroutine of occurrences_in method."""
# If details have been calculated before, return cached result
if self._cached_pattern_details is not None:
return self._cached_pattern_details
result = []
index = 0
for fac_indices in left_floor_and_ceiling(self):
base_element = self[index]
compiled = (fac_indices.floor,
fac_indices.ceiling,
self[index]
if fac_indices.floor is None
else base_element - self[fac_indices.floor],
len(self) - self[index]
if fac_indices.ceiling is None
else self[fac_indices.ceiling] - base_element,
)
result.append(compiled)
index += 1
self._cached_pattern_details = result
return result