def test_set_energy_greater_than_max(capsys):
animal = create_test_animal()
assert animal.energy == 100
animal.energy = 200
assert animal.energy == 100
assert capsys.readouterr()[0] == 'Error: Cannot set energy to 200.\n'
def test_set_energy_negative(capsys):
animal = create_test_animal()
assert animal.energy == 100
animal.energy = -50
assert animal.energy == 100
assert capsys.readouterr()[0] == 'Error: Cannot set energy to -50.\n'
def test_eat():
animal = create_test_animal()
food = Food(animal.world, 3, 3, 10)
animal.energy = 75
animal.eat(food)
assert animal.world.get_cell(3, 3).food == []
assert animal.energy == 85
def test_step_random():
'''Test stepping to a randomly-chosen location.'''
animal = create_test_animal()
assert animal.location == WorldCell(animal.world, 3, 3)
animal.step()
assert animal.location in (WorldCell(animal.world, x, y)
for x in range(2, 5) for y in range(2, 5)
if not x == y == 3)
def test_eat_food_different_location(capsys):
animal = create_test_animal()
food = Food(animal.world, 0, 0, 10)
animal.eat(food)
assert animal.world.get_cell(0, 0).food == [food]
assert animal.energy == 100
assert capsys.readouterr()[0] == \
'Error: Animal at (3, 3) cannot eat food which is not at its location.\n'
def test_step_specific_success():
'''Test successfully stepping to a specific location.'''
animal = create_test_animal()
assert animal.location == WorldCell(animal.world, 3, 3)
assert animal.energy == 100
animal.step(new_location=WorldCell(animal.world, 3, 4))
assert animal.location == WorldCell(animal.world, 3, 4)
assert animal.energy == 90
def test_set_energy_non_int(capsys):
animal = create_test_animal()
assert animal.energy == 100
animal.energy = 50.00
assert animal.energy == 100
assert capsys.readouterr()[0] == 'Error: Cannot set energy to 50.0.\n'
animal.energy = "fifty"
assert animal.energy == 100
assert capsys.readouterr()[0] == 'Error: Cannot set energy to fifty.\n'
def test_step_specific_invalid_location(capsys):
'''Test attempting to step to an invalid location.'''
animal = create_test_animal()
assert animal.location == WorldCell(animal.world, 3, 3)
assert animal.energy == 100
animal.step(new_location=WorldCell(animal.world, 5, 5))
assert animal.location == WorldCell(animal.world, 3, 3)
assert animal.energy == 100 # No energy should have been spent.
assert capsys.readouterr(
)[0] == 'Error: Cannot move to (5, 5) from (3, 3).\n'
def test_spend_energy_insufficient_energy():
animal = create_test_animal()
@Animal.spend_energy(101)
def test_func(self):
pass
setattr(Animal, 'test_func', test_func)
assert animal.energy == 100
animal.test_func()
assert animal.energy == 100
def test_spend_energy_success():
animal = create_test_animal()
@Animal.spend_energy(1)
def test_func(self):
pass
setattr(Animal, 'test_func', test_func)
assert animal.energy == 100
animal.test_func()
assert animal.energy == 99
def test_spend_energy_invalid_value(capsys):
animal = create_test_animal()
@Animal.spend_energy("abc")
def test_func(self):
pass
setattr(Animal, 'test_func', test_func)
assert animal.energy == 100
animal.test_func()
assert animal.energy == 100
assert capsys.readouterr()[0] == 'Error: abc is not a valid number.\n'
def test_repr():
animal = create_test_animal(x_pos=1, y_pos=1)
assert repr(animal) == 'Animal at (1, 1)'
def test_set_energy_success():
animal = create_test_animal()
assert animal.energy == 100
animal.energy = 50
assert animal.energy == 50
