mirror of https://github.com/django/django.git
97 lines
3.7 KiB
Python
97 lines
3.7 KiB
Python
from django.test import TestCase
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from django.db import models
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from django.db.models.loading import BaseAppCache
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from django.db.migrations.state import ProjectState, ModelState
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class StateTests(TestCase):
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"""
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Tests state construction, rendering and modification by operations.
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"""
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def test_create(self):
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"""
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Tests making a ProjectState from an AppCache
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"""
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new_app_cache = BaseAppCache()
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class Author(models.Model):
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name = models.CharField(max_length=255)
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bio = models.TextField()
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age = models.IntegerField(blank=True, null=True)
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class Meta:
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app_label = "migrations"
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app_cache = new_app_cache
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unique_together = ["name", "bio"]
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class Book(models.Model):
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title = models.CharField(max_length=1000)
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author = models.ForeignKey(Author)
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class Meta:
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app_label = "migrations"
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app_cache = new_app_cache
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verbose_name = "tome"
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db_table = "test_tome"
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project_state = ProjectState.from_app_cache(new_app_cache)
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author_state = project_state.models['migrations', 'author']
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book_state = project_state.models['migrations', 'book']
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self.assertEqual(author_state.app_label, "migrations")
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self.assertEqual(author_state.name, "Author")
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self.assertEqual([x for x, y in author_state.fields], ["id", "name", "bio", "age"])
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self.assertEqual(author_state.fields[1][1].max_length, 255)
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self.assertEqual(author_state.fields[2][1].null, False)
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self.assertEqual(author_state.fields[3][1].null, True)
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self.assertEqual(author_state.options, {"unique_together": set(("name", "bio"))})
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self.assertEqual(author_state.bases, (models.Model, ))
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self.assertEqual(book_state.app_label, "migrations")
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self.assertEqual(book_state.name, "Book")
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self.assertEqual([x for x, y in book_state.fields], ["id", "title", "author"])
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self.assertEqual(book_state.fields[1][1].max_length, 1000)
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self.assertEqual(book_state.fields[2][1].null, False)
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self.assertEqual(book_state.options, {"verbose_name": "tome", "db_table": "test_tome"})
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self.assertEqual(book_state.bases, (models.Model, ))
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def test_render(self):
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"""
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Tests rendering a ProjectState into an AppCache.
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"""
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project_state = ProjectState()
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project_state.add_model_state(ModelState(
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"migrations",
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"Tag",
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[
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("id", models.AutoField(primary_key=True)),
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("name", models.CharField(max_length=100)),
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("hidden", models.BooleanField()),
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],
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{},
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None,
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))
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new_app_cache = project_state.render()
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self.assertEqual(new_app_cache.get_model("migrations", "Tag")._meta.get_field_by_name("name")[0].max_length, 100)
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self.assertEqual(new_app_cache.get_model("migrations", "Tag")._meta.get_field_by_name("hidden")[0].null, False)
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def test_render_multiple_inheritance(self):
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# Use a custom app cache to avoid polluting the global one.
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new_app_cache = BaseAppCache()
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class Book(models.Model):
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title = models.CharField(max_length=1000)
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class Meta:
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app_label = "migrations"
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app_cache = new_app_cache
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class Novel(Book):
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class Meta:
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app_label = "migrations"
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app_cache = new_app_cache
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yet_another_app_cache = BaseAppCache()
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ModelState.from_model(Novel).render(yet_another_app_cache)
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