def test_world_can_render_with_arbitrary_characters(self):
world = World.empty()
world.set_living_at(Location(0, 0))
world.set_living_at(Location(2, 0))
render = WorldRenderer(world).render()
expected = 'XOX'
self.assertEqual(render, expected)
def test_world_with_live_and_dead_cell_renders_as_expected(self):
world = World.empty()
world.set_living_at(Location(0, 0))
world.set_living_at(Location(2, 0))
render = WorldRenderer(world).render()
expected = '+-+'
self.assertEqual(render, expected)
def test_world_renders_according_to_dimensions(self):
world = World.empty(min_location=Location(0, 0),
max_location=Location(2, 0))
render = WorldRenderer(world).render()
expected = ('---')
self.assertEqual(render, expected)
def test_world_that_is_vertical_renders_properly(self):
world = World.empty()
world.set_living_at(Location(0, 0))
world.set_living_at(Location(0, 2))
render = WorldRenderer(world).render()
expected = ('+\n' '-\n' '+')
self.assertEqual(render, expected)
def test_a_world_with_one_cell_is_empty_after_a_tick(self):
# Potential smell here, given that we have to use real location
# instance here for this to pass. Mock approach will not work.
self.location = Location(0, 0)
world = World.empty()
world.set_living_at(self.location)
next_world = world.tick()
self.assertTrue(next_world.is_empty)
def test_empty_world_has_0_living_cell_count(self):
world = World.empty()
self.assertEqual(world.living_cell_count, 0)
def test_set_living_at_below_min_location_y_lowers_min_location(self):
world = World.empty(min_location=Location(0, 0),
max_location=Location(3, 3))
world.set_living_at(Location(0, -1))
self.assertEqual(world.dimensions, (4, 5))
def test_set_living_at_beyond_max_location_y_expands_max_location(self):
world = World.empty(min_location=Location(0, 0),
max_location=Location(3, 3))
world.set_living_at(Location(0, 4))
self.assertEqual(world.dimensions, (4, 5))
def test_world_dimensions_come_from_min_max_locations(self):
world = World.empty(min_location=Location(0, 0),
max_location=Location(3, 3))
self.assertEqual((4, 4), world.dimensions)
def test_world_has_default_dimensions(self):
world = World.empty()
self.assertEqual((1, 1), world.dimensions)
def test_2_by_2_world_with_one_living_cell_has_3_dead_cells(self):
world = World.empty(min_location=Location(0, 0),
max_location=Location(1, 1))
world.set_living_at(self.location)
self.assertEqual(world.dead_cell_count, 3)
def test_an_empty_world_with_10_by_10_dimensions_has_100_dead_cells(self):
world = World.empty(min_location=Location(0, 0),
max_location=Location(9, 9))
self.assertEqual(world.dead_cell_count, 100)
def test_dead_locations_not_in_living_locations(self):
world = World.empty()
world.set_dead_at(self.location)
self.assertEqual(world.living_locations, [])
def test_living_locations_includes_living_cells(self):
world = World.empty()
world.set_living_at(self.location)
self.assertEqual(world.living_locations, [self.location])
def test_an_empty_world_stays_empty_after_a_tick(self):
world = World.empty()
next_world = world.tick()
self.assertTrue(next_world.is_empty)
def test_an_empty_world_with_2_by_2_dimensions_has_4_dead_cells(self):
world = World.empty(min_location=Location(0, 0),
max_location=Location(1, 1))
self.assertEqual(world.dead_cell_count, 4)
def test_empty_world_renders_as_expected(self):
world = World.empty()
render = WorldRenderer(world).render()
expected = '-'
self.assertEqual(render, expected)