def test_worker():
navigation.GRID = {0: (1, 2, 'N')}
instructions = 'LFLFLFLFF'
navigation.worker(instructions, 0, (5, 5))
assert navigation.GRID[0] == (1, 3, 'N')
def test_worker_6():
navigation.GRID = {0: (1, 4, 'S')}
instructions = 'FFFFFFRFFFF'
navigation.worker(instructions, 0, (5, 5))
assert navigation.GRID[0] == (0, 0, 'W')
def test_worker_3():
navigation.GRID = {0: (1, 2, 'N'), 1: (3, 3, 'E')}
instructions = 'LFLFLFLFF'
navigation.worker(instructions, 0, (5, 5))
assert navigation.GRID[1] == (3, 3, 'E')
def test_worker_5():
navigation.GRID = {0: (1, 4, 'N')}
instructions = 'FFRFLFLF'
navigation.worker(instructions, 0, (5, 5))
assert navigation.GRID[0] == (1, 5, 'W')
def test_worker_2():
navigation.GRID = {0: (1, 2, 'N')}
instructions = 'RFF'
navigation.worker(instructions, 0, (5, 5))
assert navigation.GRID[0] == (3, 2, 'E')