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Python GUI Programming with Tkinter
book

Python GUI Programming with Tkinter

by Alan D. Moore
May 2018
Beginner to intermediate content levelBeginner to intermediate
452 pages
11h 26m
English
Packt Publishing
Content preview from Python GUI Programming with Tkinter

Testing our model

Our CSVModel code is fairly self-contained apart from its need to read and write files. Since file operations are one of the more common things that need to be mocked out in a test, the mock module provides mock_open, a Mock subclass ready-made to replace Python's open method. When called, a mock_open object returns a mock file handle object, complete with support for the read(), write(), and readlines() methods.

Let's begin creating our test case class in test/test_models.py as follows:

from .. import modelsfrom unittest import TestCasefrom unittest import mockclass TestCSVModel(TestCase):    def setUp(self):        self.file1_open = mock.mock_open(            read_data=(                "Date,Time,Technician,Lab,Plot,Seed sample,Humidity,Light," "Temperature,Equipment ...
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Publisher Resources

ISBN: 9781788835886Supplemental Content