1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
"""Test functions from deap/benchmarks."""
import sys
import unittest
from deap import base
from deap import creator
from deap.benchmarks import binary
class BenchmarkTest(unittest.TestCase):
"""Test object for unittest of deap/benchmarks."""
def setUp(self):
@binary.bin2float(0, 1023, 10)
def evaluate(individual):
"""Simplest evaluation function."""
return individual
creator.create("FitnessMin", base.Fitness, weights=(-1.0,))
creator.create("Individual", list, fitness=creator.FitnessMin)
self.toolbox = base.Toolbox()
self.toolbox.register("evaluate", evaluate)
def tearDown(self):
del creator.FitnessMin
def test_bin2float(self):
# Correct evaluation of bin2float.
zero_individual = creator.Individual([0] * 10)
full_individual = creator.Individual([1] * 10)
two_individiual = creator.Individual(8*[0] + [1, 0])
population = [zero_individual, full_individual, two_individiual]
fitnesses = map(self.toolbox.evaluate, population)
for ind, fit in zip(population, fitnesses):
ind.fitness.values = fit
assert population[0].fitness.values == (0.0, )
assert population[1].fitness.values == (1023.0, )
assert population[2].fitness.values == (2.0, )
# Incorrect evaluation of bin2float.
wrong_size_individual = creator.Individual([0, 1, 0, 1, 0, 1, 0, 1, 1])
wrong_population = [wrong_size_individual]
# It is up the user to make sure that bin2float gets an individual with
# an adequate length; no exceptions are raised.
fitnesses = map(self.toolbox.evaluate, wrong_population)
for ind, fit in zip(wrong_population, fitnesses):
# In python 2.7 operator.mul works in a different way than in
# python3. Thus an error occurs in python2.7 but an assignment is
# correctly executed in python3.
if sys.version_info < (3, ):
with self.assertRaises(AssertionError):
ind.fitness.values = fit
else:
assert wrong_population[0].fitness.values == ()
if __name__ == "__main__":
suite = unittest.TestLoader().loadTestsFromTestCase(BenchmarkTest)
unittest.TextTestRunner(verbosity=2).run(suite)
|
