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Python Python Testing First Steps With Testing Writing and Running Doctests

move_player function input format.

I am trying to write a test for move player. If I pass in a tuple for player and a string for move I get an error: x, y = player['location'] TypeError: tuple indices must be integers or slices, not str

> >> from dd_game import move_player
>>> move_player((1,2), 
... "LEFT")
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/home/brigette/Code/treehouse-projects/python/testing/1_first_steps_testing/dd_game.py", line 84, in move_player
    x, y = player['location']
TypeError: tuple indices must be integers or slices, not str

What does my input need to look like for this function?

2 Answers

James J. McCombie
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James J. McCombie
Python Web Development Techdegree Graduate 21,199 Points

Hi,

you should be writing the dockets inside the docstring for the function 'move_player'; so you should not have to import it.

I had to dig through the lessons, but is this the function you are writing a doctest for?

def move_player(player, move):
    x, y = player
    if move == "LEFT":
        x -= 1
    if move == "RIGHT":
        x += 1
    if move == "UP":
        y -= 1
    if move == "DOWN":
        y += 1
    return x, y

if so to test this I would do

def move_player(player, move):
    """
    >>> move_player((1, 1), 'LEFT')
    (0, 1)
    """
    # rest of function code...
James J. McCombie
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.a{fill-rule:evenodd;}techdegree seal-36
James J. McCombie
Python Web Development Techdegree Graduate 21,199 Points

The instructions in the doctest I think of as being what you were entering into a python shell, as you would do if you were playing with your code to see if it works.

So the first line is just calling the function with some arguments, and since you know what to expect, the second line is just the repl output you would see in the terminal

It was the see if you can write your own doctests part of the lesson, just trying to figure out how to format the arguments when I call the move_player() function. The ((x, y), 'Direction' ) gave me the error before.