In this post, we’ll see how to write unit test cases for any project.
Having tests for any project will helps you to find bugs. If any of the function breaks, you will know about it. Its easier to debug code line by line.
Unit Tests are isolated tests that test one specific function.
A test case is executing set of features for your Application. Proper development of test cases finds problems in your functionality of an Application.
A test suite is a collection of test cases. It is used to aggregate tests that should be executed together.
In general, tests result in either a Success (expected results), Failure (unexpected results), or an error. While writting test cases, not only testing for the expected results but also need to test how good your code handles for unexpected results.
Consider a Form:
from django import forms
from .models import *
class UserForm(forms.ModelForm):
class Meta:
model = User
fields = ('email', 'password', 'first_name', 'phone')The setUp() methods allows to define instructions which will be executed before and after each test method.
Every TestCase method should start with "test", because When you run your tests, the default behaviour of the test utility is to find all the test cases in all your files, function name starts with test, which automatically build a test suite out for all test cases, and run.
For Testing any Form, In "Setup_Class" we create required objects here, and will test whether the created object details matched or not.
Write in your tests.py
from django.test import TestCase
from django.test import Client
from .forms import * # import all forms
class Setup_Class(TestCase):
def setUp(self):
self.user = User.objects.create(email="[email protected]", password="user", first_name="user", phone=12345678)
class User_Form_Test(TestCase):
# Valid Form Data
def test_UserForm_valid(self):
form = UserForm(data={'email': "[email protected]", 'password': "user", 'first_name': "user", 'phone': 12345678})
self.assertTrue(form.is_valid())
# Invalid Form Data
def test_UserForm_invalid(self):
form = UserForm(data={'email': "", 'password': "mp", 'first_name': "mp", 'phone': ""})
self.assertFalse(form.is_valid())assertTrue() or assertFalse() functions is to verify condition which returns "True/False"
In the above functions in class "User_Form_Test" returns True/False based on the input data given.
When we start testing the vews, first test for the response codes then we got with the actual response.
class User_Views_Test(SetUp_Class):
def test_home_view(self):
user_login = self.client.login(email="[email protected]", password="user")
self.assertTrue(user_login)
response = self.client.get("/")
self.assertEqual(response.status_code, 302)
def test_add_user_view(self):
response = self.client.get("include url for add user view")
self.assertEqual(response.status_code, 200)
self.assertTemplateUsed(response, "include template name to render the response")
# Invalid Data
def test_add_user_invalidform_view(self):
response = self.client.post("include url to post the data given", {'email': "[email protected]", 'password': "", 'first_name': "mp", 'phone': 12345678})
self.assertTrue('"error": true' in response.content)
# Valid Data
def test_add_admin_form_view(self):
user_count = User.objects.count()
response = self.client.post("include url to post the data given", {'email': "[email protected]", 'password': "user", 'first_name': "user"})
self.assertEqual(response.status_code, 200)
self.assertEqual(User.objects.count(), user_count+1)
self.assertTrue('"error": false' in response.content)assertEqual() to check for an expected result.
This Assert is used for rendering the response.
python manage.py testCoverage: It is a tool used for measuring the effectiveness of tests, showing the percentage of your codebase covered by tests.
Installation: Pip install coverageUse "coverage run" to run your program and gather data:
coverage run manage.py testcoverage report -m # provides the report for the testsTo Know more about our Django CRM(Customer Relationship Management) Open Source Package. Check Code