Add unused app with manytomany field

tests/test_project/app_add_manytomany_field/admin.py

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+from django.contrib import admin
+
+# Register your models here.

tests/test_project/app_add_manytomany_field/apps.py

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+from django.apps import AppConfig
+
+
+class AppAddManytomanyFieldConfig(AppConfig):
+    name = "app_add_manytomany_field"

tests/test_project/app_add_manytomany_field/migrations/0001_initial.py

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+# Generated by Django 2.2 on 2019-09-20 20:01
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name="A",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                )
+            ],
+        ),
+        migrations.CreateModel(
+            name="B",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                )
+            ],
+        ),
+    ]

tests/test_project/app_add_manytomany_field/migrations/0002_b_many_to_many.py

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+# Generated by Django 2.2 on 2019-09-20 20:02
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [("app_add_manytomany_field", "0001_initial")]
+
+    operations = [
+        migrations.AddField(
+            model_name="b",
+            name="many_to_many",
+            field=models.ManyToManyField(to="app_add_manytomany_field.A"),
+        )
+    ]

tests/test_project/app_add_manytomany_field/models.py

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+from django.db import models
+
+
+class A(models.Model):
+    pass
+
+
+class B(models.Model):
+    many_to_many = models.ManyToManyField(A)

tests/test_project/app_add_manytomany_field/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

tests/test_project/app_add_manytomany_field/views.py

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+from django.shortcuts import render
+
+# Create your views here.