How deeply does Django in Action cover assertEqual?

Explains equality assertions, argument order, exceptions, tracebacks, and failed test output without surveying every assertion method.

assertEqual

As explained in Django in Action

assertEqual is a Python test method that checks whether two values are equal and reports a failed assertion otherwise.

assertEqual is a Python TestCase method for checking that two values match. If they differ, it raises an exception and marks the test as failed. section 8.2

In a Django test, compare an expected result with a response value, commonly after the test client requests a URL. Putting the expected value first makes failures easier to read. section 8.2

Checking a view response

response = self.client.get("/credits/") self.assertEqual(200, response.status_code) The test expects the credits view to return HTTP 200. Changing 200 to 42 produces a failure such as AssertionError: 42 != 200, with a traceback identifying the test line. section 8.2

Listing 8.1 A test case for the `credits()` view

# home/tests.py
from django.test import TestCase  #1

class TestHome(TestCase): #2
    def test_credits(self):  #3
        response = self.client.get("/credits/")  #4
        self.assertEqual(200, response.status_code)  #5

Use the complete test case to connect assertEqual with TestCase inheritance, the Django test client, URL routing, and response status codes. section 8.2

How Django in Action covers it

liveBook manning.com

Read Django in Action on liveBook Get the book at manning.com

Also explained in

liveBook manning.com

Python How-ToassertEqual is a unittest assertion method that checks whether two values are equal and reports a test failure otherwise.

Compare how 2 books explain assertEqual →

Related concepts

assertion methodkind of · An assertion method is a test operation that checks a stated condition and raises an exception when the condition is false.
TestCasepart of · unittest.TestCase is the Python base class that provides structure, lifecycle methods, and assertions for defining test cases.
testused by · A test is a procedure or check that evaluates behavior using specified inputs or evidence against expected results or criteria.
assertionequivalent to · A software assertion is an executable check of an expected condition or property that signals failure when the check does not hold.
unittestpart of · unittest is Python’s standard-library framework for defining, organizing, executing, and reporting automated tests.

This explainer was generated by Manning's knowledge graph from the text of Django in Action. The section links point to the parts of the book it draws on.