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Contents
import unittest
from strain import keep, discard
class StrainTest(unittest.TestCase):
def test_empty_sequence(self):
self.assertEqual(keep([], lambda x: x % 2 == 0), [])
def test_empty_keep(self):
inp = [2, 4, 6, 8, 10]
out = []
self.assertEqual(keep(inp, lambda x: x % 2 == 1), out)
def test_empty_discard(self):
inp = [2, 4, 6, 8, 10]
out = []
self.assertEqual(discard(inp, lambda x: x % 2 == 0), out)
def test_keep_everything(self):
inp = [2, 4, 6, 8, 10]
self.assertEqual(keep(inp, lambda x: x % 2 == 0), inp)
def test_discard_endswith(self):
inp = ['dough', 'cash', 'plough', 'though', 'through', 'enough']
out = ['cash']
self.assertEqual(discard(inp, lambda x: str.endswith(x, 'ough')), out)
def test_keep_z(self):
inp = ['zebra', 'arizona', 'apple', 'google', 'mozilla']
out = ['zebra', 'arizona', 'mozilla']
self.assertEqual(keep(inp, lambda x: 'z' in x), out)
def test_keep_discard(self):
inp = ['1,2,3', 'one', 'almost!', 'love']
self.assertEqual(discard(keep(inp, str.isalpha), str.isalpha), [])
def test_keep_plus_discard(self):
inp = ['1,2,3', 'one', 'almost!', 'love']
out = ['one', 'love', '1,2,3', 'almost!']
self.assertEqual(
keep(inp, str.isalpha) + discard(inp, str.isalpha), out)
if __name__ == '__main__':
unittest.main()
Version data entries
269 entries across 269 versions & 1 rubygems