Practice: Exceptions and Testing

Required Practice

Complete the exercises using the link below.

https://codecheck.io/assignment/23111422363sxun8e3pdh568v81zmmliey1

When you start the exercise, you will be given a CodeCheck ID. You must save this ID and the private URL so that you can return to your work later! If you don't save the private URL (which contains the CodeCheck ID), you will have to start the exercise from the beginning. We will re-use this site throughout the term, so I recommend creating a document on your computer where you will save the private URLs for the whole term.

After you have completed the exercise, submit your CodeCheck ID to GradeScope using the following link:

/assignments/practice__exceptions_/assignments/practice__exceptions_/assignments/practice__exceptions_/assignments/practice__exceptions_https://www.gradescope.com/courses/544003/assignments/3597316_testing.pdf_testing.pdf_testing.pdf_testing.pdf

For submission to Anchor, please take a screen capture of each of your solutions (5 in total for this assignment) and submit them below.

Additional Practice

Pagination Testing

Imagine a "pagination" function that takes a list as a parameter. The goal is to take a long list and split it into pages of length 5 or less. The result is a list of lists that all need to be less than 5 items. For example, if the input is [1, 2, 3, 4, 5, 6, 7], the output would be [[1, 2, 3, 4, 5], [6, 7]].

This type of function would be used, for example, if a search engine gave you 90 results, and you needed to display them to the user one page at a time.

What test cases would you write to test this function?
- Make a list of at least 3 test cases you would write if you were to write unit tests for this function.

Testing Show Weather From API

Recall our "show-weather-from-api" program that we worked on earlier in the course. You can see the source code at the link here.

Right now, the show_weather_to_user function is not as easily testable because it prints the result instead of returning it as a string.

Making the program more testable

Modify show_weather_to_user so that it returns a string instead of using print.
- This can be done while still leaving the program looking the same. Just take any place that calls show_weather_to_user and add a print at that point instead, that will print the return value from show_weather_to_user.

Writing test cases

Make a list of at least 3 test cases you would write if you were to write unit tests for this function.

Creating a test (optional challenge)

Create a file named program.py on your computer,
Copy the show_weather_to_user function into that file,
Create a file in the same folder named test_show_weather_from_api.py,
Add test methods that call the show_weather_to_user function. For example,

import unittest
import program

class TestShowWeatherFromApi(unittest.TestCase):
  def test_when_hour_number_is_24(self):
     fake_weather_data_list = ...
     result = program.show_weather_to_user(fake_weather_data_list)
     assert result == ...

Programming 2