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75 lines
2.6 KiB
Python
75 lines
2.6 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(
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authors.order_by("name"), [9, 4, 0], lambda a: a.fullstop
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)
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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(
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articles.order_by("title"), [15, 0], lambda a: a.title_pos
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)
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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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[
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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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[
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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(
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middle_name__gt=0
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),
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["George. R. R. Martin"],
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lambda a: a.name,
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)
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