test.py

import io
import sys
sys.stdout = buffer = io.StringIO()

# from app import my_function
import pytest
import os
import app
import re
path = os.path.dirname(os.path.abspath(__file__))+'/app.py'

@pytest.mark.it("You should define a function named standards_maker")
def test_variable_exists():
    try:
        from app import standards_maker
    except ImportError:
        raise ImportError("The function 'standards_maker' should exist on app.py")

@pytest.mark.it('You should use a for loop')
def test_for_loop():
    with open(path, 'r') as content_file:
        content = content_file.read()
        regex = re.compile(r"for")
        assert bool(regex.search(content)) == True

@pytest.mark.it("In the function standards_maker include a for loop which prints the string in the instructions 300 times")
def test_for_file_output(capsys):
    captured = buffer.getvalue()
    expected = ["I will ask questions if I am stuck\n" for x in range(300)]
    expected_2 = ["Haré preguntas si estoy atascado\n" for x in range(300)]
    
    hasCorrectAnswer = ((captured == "".join(expected)) or (captured == "".join(expected_2)))
    
    assert hasCorrectAnswer #add \n because the console jumps the line on every print

@pytest.mark.it('Use the function print()')
def test_for_print():
    with open(path, 'r') as content_file:
        content = content_file.read()
        regex = re.compile(r"print\s*\(.+\)")
        assert bool(regex.search(content)) == True

@pytest.mark.it("You should call the function standards_maker")
def test_callTheFunction():
    with open(path, 'r') as content_file:
        content = content_file.read()
        pattern = r"standards_maker\(\)"
        regex = re.compile(pattern)
        assert bool(regex.search(content)) == True