def test_can_birth_occur_with_1_herbivore(self):
"""Test to see that birth will not occur for only 1 animal
"""
loc = (2, 7)
i_sim = Island()
a_sim = Herbivore(i_sim, loc)
i_sim.add_pop_on_loc(loc, a_sim)
assert not a_sim.can_birth_occur()
def test_can_birth_occur_with_2_herbivores_with_0_prob(self, mocker):
"""Test to show that 2 herbivores will not give birth if the
probability is mocked to highest possible value.
"""
mocker.patch('random.random', return_value=1)
loc = (2, 7)
i_sim = Island()
a_sim = Herbivore(i_sim, loc, weight=100)
for _ in range(2):
i_sim.add_pop_on_loc(loc, a_sim)
assert not a_sim.can_birth_occur()
