def test_route_empty_grid():
grid = empty_grid(2, 2)
result = escape_routes(grid)
for row in 0, 1:
for column in 0, 1:
with pytest.raises(ValueError):
result.route(row, column)
def test_route_nonempty_grid():
grid = empty_grid(2, 2)
grid[0, 0] = 2
result = escape_routes(grid)
route = result.route(1, 0) # this route exists
route = list(route) # asserts this can be converted
assert isinstance(route[0], tuple)
assert len(route[0]) == 2
assert isinstance(route[0][0], int)
assert isinstance(route[0][1], int)
def escape_routes_(grid):
print('GRID:')
print(grid)
print()
result = escape_routes(grid)
print('DISTANCES:')
print(result.distances)
print()
print('DIRECTIONS:')
print(result.directions)
print()
print('SAFE FACTOR:', result.safe_factor)
return result
def test_1D_array_not_possible():
with pytest.raises(TypeError):
escape_routes(numpy.zeros((1, ), dtype=int))
def test_multiple_args_not_possible():
with pytest.raises(TypeError):
escape_routes(numpy.zeros((1, 1), dtype=int), None)
def test_no_args_not_possible():
with pytest.raises(TypeError):
escape_routes()
def test_route_more_arguments():
grid = empty_grid(2, 2)
result = escape_routes(grid)
with pytest.raises(TypeError):
result.route(1, 1, 1)
def test_route_nonindex():
grid = empty_grid(2, 2)
result = escape_routes(grid)
with pytest.raises(IndexError):
result.route('spam', 'eggs')
def test_route_outside():
grid = empty_grid(2, 2)
result = escape_routes(grid)
with pytest.raises(IndexError):
result.route(100, 100)
def test_safe_factor_type_size_empty():
grid = empty_grid(0, 0)
result = escape_routes(grid)
assert numpy.isnan(result.safe_factor) # `nan == nan` is False
def test_safe_factor_type_size():
grid = empty_grid(4, 15)
result = escape_routes(grid)
assert isinstance(result.safe_factor, float)
assert 0.0 <= result.safe_factor <= 1.0
def test_directions_shape_type():
grid = empty_grid(4, 15)
result = escape_routes(grid)
assert result.directions.shape == grid.shape
assert isinstance(result.directions[0, 0], bytes)
assert len(result.directions[0, 0]) == 1
def test_nonarray_not_possible():
with pytest.raises(TypeError):
escape_routes([0, 0, 0])
def test_float_array_not_possible():
with pytest.raises(TypeError):
escape_routes(numpy.zeros((1, 1), dtype=float))
def test_disatnces_shape_type():
grid = empty_grid(3, 7)
result = escape_routes(grid)
assert result.distances.shape == grid.shape
assert isinstance(result.distances[0, 0], numpy.signedinteger)