def test_two_players_with_mutation(self):
p1, p2 = axelrod.Cooperator(), axelrod.Defector()
random.seed(5)
mp = MoranProcess((p1, p2), mutation_rate=0.2)
self.assertDictEqual(mp.mutation_targets,
{str(p1): [p2], str(p2): [p1]})
# Test that mutation causes the population to alternate between
# fixations
counters = [
Counter({'Cooperator': 2}),
Counter({'Defector': 2}),
Counter({'Cooperator': 2}),
Counter({'Defector': 2})
]
for counter in counters:
for _ in itertools.takewhile(lambda x: x.population_distribution() != counter, mp):
pass
self.assertEqual(mp.population_distribution(), counter)
def test_three_players_with_mutation(self):
p1 = axelrod.Cooperator()
p2 = axelrod.Random()
p3 = axelrod.Defector()
players = [p1, p2, p3]
mp = MoranProcess(players, mutation_rate=0.2)
self.assertDictEqual(mp.mutation_targets, {
str(p1): [p3, p2], str(p2): [p1, p3], str(p3): [p1, p2]})
# Test that mutation causes the population to alternate between
# fixations
counters = [
Counter({'Cooperator': 3}),
Counter({'Defector': 3}),
]
for counter in counters:
for _ in itertools.takewhile(lambda x: x.population_distribution() != counter, mp):
pass
self.assertEqual(mp.population_distribution(), counter)
def test_three_players_with_mutation(self):
p1 = axelrod.Cooperator()
p2 = axelrod.Random()
p3 = axelrod.Defector()
players = [p1, p2, p3]
mp = MoranProcess(players, mutation_rate=0.2)
self.assertDictEqual(
mp.mutation_targets,
{str(p1): [p3, p2], str(p2): [p1, p3], str(p3): [p1, p2]},
)
# Test that mutation causes the population to alternate between
# fixations
counters = [Counter({"Cooperator": 3}), Counter({"Defector": 3})]
for counter in counters:
for _ in itertools.takewhile(
lambda x: x.population_distribution() != counter, mp
):
pass
self.assertEqual(mp.population_distribution(), counter)
def test_two_players_with_mutation(self):
p1, p2 = axelrod.Cooperator(), axelrod.Defector()
axelrod.seed(5)
mp = MoranProcess((p1, p2), mutation_rate=0.2)
self.assertDictEqual(mp.mutation_targets, {str(p1): [p2], str(p2): [p1]})
# Test that mutation causes the population to alternate between
# fixations
counters = [
Counter({"Cooperator": 2}),
Counter({"Defector": 2}),
Counter({"Cooperator": 2}),
Counter({"Defector": 2}),
]
for counter in counters:
for _ in itertools.takewhile(
lambda x: x.population_distribution() != counter, mp
):
pass
self.assertEqual(mp.population_distribution(), counter)
