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67 lines
2.5 KiB
Python
67 lines
2.5 KiB
Python
from django.db.models import Value
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from django.db.models.functions import StrIndex
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from django.test import TestCase
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from django.utils import timezone
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from .models import Article, Author
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class StrIndexTests(TestCase):
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def test_annotate_charfield(self):
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Author.objects.create(name='George. R. R. Martin')
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Author.objects.create(name='J. R. R. Tolkien')
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Author.objects.create(name='Terry Pratchett')
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authors = Author.objects.annotate(fullstop=StrIndex('name', Value('R.')))
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self.assertQuerysetEqual(authors.order_by('name'), [9, 4, 0], lambda a: a.fullstop)
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def test_annotate_textfield(self):
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Article.objects.create(
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title='How to Django',
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text='This is about How to Django.',
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written=timezone.now(),
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)
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Article.objects.create(
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title='How to Tango',
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text="Won't find anything here.",
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written=timezone.now(),
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)
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articles = Article.objects.annotate(title_pos=StrIndex('text', 'title'))
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self.assertQuerysetEqual(articles.order_by('title'), [15, 0], lambda a: a.title_pos)
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def test_order_by(self):
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Author.objects.create(name='Terry Pratchett')
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Author.objects.create(name='J. R. R. Tolkien')
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Author.objects.create(name='George. R. R. Martin')
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self.assertQuerysetEqual(
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Author.objects.order_by(StrIndex('name', Value('R.')).asc()), [
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'Terry Pratchett',
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'J. R. R. Tolkien',
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'George. R. R. Martin',
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],
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lambda a: a.name
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)
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self.assertQuerysetEqual(
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Author.objects.order_by(StrIndex('name', Value('R.')).desc()), [
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'George. R. R. Martin',
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'J. R. R. Tolkien',
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'Terry Pratchett',
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],
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lambda a: a.name
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)
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def test_unicode_values(self):
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Author.objects.create(name='ツリー')
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Author.objects.create(name='皇帝')
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Author.objects.create(name='皇帝 ツリー')
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authors = Author.objects.annotate(sb=StrIndex('name', Value('リ')))
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self.assertQuerysetEqual(authors.order_by('name'), [2, 0, 5], lambda a: a.sb)
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def test_filtering(self):
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Author.objects.create(name='George. R. R. Martin')
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Author.objects.create(name='Terry Pratchett')
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self.assertQuerysetEqual(
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Author.objects.annotate(middle_name=StrIndex('name', Value('R.'))).filter(middle_name__gt=0),
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['George. R. R. Martin'],
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lambda a: a.name
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)
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