setup project

tests/manage.py

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+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'testapp.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()

tests/testapp/admin.py

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+# -*- coding: utf-8 -*-
+
+from django.contrib import admin
+from more_filters import (
+    MultiSelectFilter, MultiSelectRelatedFilter, MultiSelectDropdownFilter,
+    MultiSelectRelatedDropdownFilter, DropdownFilter, ChoicesDropdownFilter,
+    RelatedDropdownFilter, PlusMinusFilter, AnnotationListFilter,
+    BooleanAnnotationListFilter
+)
+from .models import ModelA
+from .models import ModelB
+
+
+@admin.register(ModelA)
+class ModelAAdmin(admin.ModelAdmin):
+    search_fields = ('dropdown_less_than_four',)
+    list_display = (
+        'dropdown_less_than_four',
+        'dropdown_more_than_three',
+        'multiselect',
+        'multiselect_dropdown',
+        'choices_dropdown',
+        'related_dropdown',
+        'multiselect_related',
+        'multiselect_related_dropdown',
+    )
+
+    list_filter = (
+        ('dropdown_less_than_four', DropdownFilter),
+        ('dropdown_more_than_three', DropdownFilter),
+        ('multiselect', MultiSelectFilter),
+        ('multiselect_dropdown', MultiSelectDropdownFilter),
+        ('choices_dropdown', ChoicesDropdownFilter),
+        ('related_dropdown', RelatedDropdownFilter),
+        ('multiselect_related', MultiSelectRelatedFilter),
+        ('multiselect_related_dropdown', MultiSelectRelatedDropdownFilter),
+    )

tests/testapp/apps.py

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+# -*- coding: utf-8 -*-
+
+from django.apps import AppConfig
+
+
+class TestappConfig(AppConfig):
+    name = 'testapp'

tests/testapp/management/commands/createtestdata.py

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+# -*- coding: utf-8 -*-
+
+from datetime import timedelta
+
+from django.core.management.base import BaseCommand
+from django.core.management.base import CommandError
+from django.contrib.auth.models import User
+from django.db.utils import IntegrityError
+
+from ...models import ModelA, ModelB
+
+
+def create_test_data():
+    try:
+        User.objects.create_superuser(
+            'admin',
+            'admin@testapp.org',
+            'adminpassword')
+    except IntegrityError:
+        pass
+
+    # clear existing data
+    ModelA.objects.all().delete()
+    ModelB.objects.all().delete()
+
+    for i in range(1, 30):
+        model_a = ModelA()
+        model_b = ModelB()
+
+        model_b.id = i
+        model_b.save()
+
+        model_a.dropdown_less_than_four = i % 3
+        model_a.dropdown_more_than_three = i % 4
+        model_a.choices_dropdown = i % 9 +1
+        model_a.multiselect = i % 4
+        model_a.multiselect_dropdown = i % 4
+        model_a.related_dropdown = model_b
+        model_a.multiselect_related = model_b
+        model_a.multiselect_related_dropdown = model_b
+        model_a.save()
+
+
+class Command(BaseCommand):
+    help = 'Create test data.'
+
+    def handle(self, *args, **options):
+        create_test_data()
+        # if options['create_test_data']:

tests/testapp/migrations/0001_initial.py

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+# Generated by Django 3.0.10 on 2020-09-04 22:23
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ModelB',
+            fields=[
+                ('id', models.AutoField(primary_key=True, serialize=False)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='ModelA',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('dropdown_less_than_four', models.IntegerField()),
+                ('dropdown_more_than_three', models.IntegerField()),
+                ('multiselect', models.IntegerField()),
+                ('multiselect_dropdown', models.IntegerField()),
+                ('choices_dropdown', models.CharField(blank=True, choices=[('1', 'one'), ('2', 'two'), ('3', 'three'), ('4', 'four'), ('5', 'five'), ('6', 'six'), ('7', 'seven'), ('8', 'eight'), ('9', 'nine')], max_length=255)),
+                ('multiselect_related', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='multiselect_related_reverse', to='testapp.ModelB')),
+                ('multiselect_related_dropdown', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='multiselect_related_dropdown_reverse', to='testapp.ModelB')),
+                ('related_dropdown', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='related_dropdown_reverse', to='testapp.ModelB')),
+            ],
+        ),
+    ]

tests/testapp/models.py

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+# -*- coding: utf-8 -*-
+
+from django.db import models
+
+
+class ModelA(models.Model):
+    CHOICES = (
+        ('1', 'one'),
+        ('2', 'two'),
+        ('3', 'three'),
+        ('4', 'four'),
+        ('5', 'five'),
+        ('6', 'six'),
+        ('7', 'seven'),
+        ('8', 'eight'),
+        ('9', 'nine'),
+    )
+    dropdown_less_than_four = models.IntegerField()
+    dropdown_more_than_three = models.IntegerField()
+    multiselect = models.IntegerField()
+    multiselect_dropdown = models.IntegerField()
+    choices_dropdown = models.CharField(max_length=255, blank=True, choices=CHOICES)
+    related_dropdown = models.ForeignKey('ModelB', on_delete=models.CASCADE, related_name='related_dropdown_reverse')
+    multiselect_related = models.ForeignKey('ModelB', on_delete=models.CASCADE, related_name='multiselect_related_reverse')
+    multiselect_related_dropdown = models.ForeignKey('ModelB', on_delete=models.CASCADE, related_name='multiselect_related_dropdown_reverse')
+
+class ModelB(models.Model):
+    id = models.AutoField(primary_key=True)

tests/testapp/settings.py

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+"""
+Django settings for testapp project.
+
+Generated by 'django-admin startproject' using Django 2.2.10.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/2.2/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/2.2/ref/settings/
+"""
+
+import os
+import sys
+
+# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/2.2/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = '*xje--vy(__r5_*7t&z^im09#v4#auk*1!t@7!^duf=e$vuzy4'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'testapp',
+    'more_filters',
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+ROOT_URLCONF = 'testapp.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'testapp.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/2.2/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        # 'NAME': ':memory:',
+        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/2.2/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_L10N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/2.2/howto/static-files/
+
+STATIC_URL = '/static/'

tests/testapp/tests/test_filters.py

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+
+
+from django.test import TestCase
+from django.contrib.auth.models import User
+from django.urls import reverse
+
+from ..management.commands.createtestdata import create_test_data
+
+
+class ExportTest(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        create_test_data()
+
+    def setUp(self):
+        self.admin = User.objects.get(username='admin')
+        self.client.force_login(self.admin)
+        self.url = reverse('admin:testapp_modela_changelist')
+
+    def test_01_load_changelist(self):
+        resp = self.client.get(self.url)
+        self.assertEqual(resp.status_code, 200)

tests/testapp/urls.py

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+"""testapp URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/2.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.conf.urls import url
+
+urlpatterns = [
+    url(r'^admin/', admin.site.urls),
+]

tests/testapp/wsgi.py

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+"""
+WSGI config for testapp project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/2.2/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'testapp.settings')
+
+application = get_wsgi_application()