120 lines
4.7 KiB
Python
120 lines
4.7 KiB
Python
import os
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from django.template import Context, Engine, TemplateDoesNotExist
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from django.test import SimpleTestCase
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from .utils import ROOT
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RECURSIVE = os.path.join(ROOT, 'recursive_templates')
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class ExtendsBehaviorTests(SimpleTestCase):
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def test_normal_extend(self):
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engine = Engine(dirs=[os.path.join(RECURSIVE, 'fs')])
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template = engine.get_template('one.html')
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output = template.render(Context({}))
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self.assertEqual(output.strip(), 'three two one')
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def test_extend_recursive(self):
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engine = Engine(dirs=[
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os.path.join(RECURSIVE, 'fs'),
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os.path.join(RECURSIVE, 'fs2'),
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os.path.join(RECURSIVE, 'fs3'),
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])
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template = engine.get_template('recursive.html')
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output = template.render(Context({}))
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self.assertEqual(output.strip(), 'fs3/recursive fs2/recursive fs/recursive')
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def test_extend_missing(self):
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engine = Engine(dirs=[os.path.join(RECURSIVE, 'fs')])
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template = engine.get_template('extend-missing.html')
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with self.assertRaises(TemplateDoesNotExist) as e:
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template.render(Context({}))
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tried = e.exception.tried
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self.assertEqual(len(tried), 1)
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self.assertEqual(tried[0][0].template_name, 'missing.html')
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def test_recursive_multiple_loaders(self):
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engine = Engine(
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dirs=[os.path.join(RECURSIVE, 'fs')],
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loaders=[(
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'django.template.loaders.locmem.Loader', {
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'one.html': (
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'{% extends "one.html" %}{% block content %}{{ block.super }} locmem-one{% endblock %}'
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),
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'two.html': (
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'{% extends "two.html" %}{% block content %}{{ block.super }} locmem-two{% endblock %}'
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),
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'three.html': (
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'{% extends "three.html" %}{% block content %}{{ block.super }} locmem-three{% endblock %}'
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),
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}
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), 'django.template.loaders.filesystem.Loader'],
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)
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template = engine.get_template('one.html')
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output = template.render(Context({}))
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self.assertEqual(output.strip(), 'three locmem-three two locmem-two one locmem-one')
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def test_extend_self_error(self):
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"""
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Catch if a template extends itself and no other matching
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templates are found.
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"""
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engine = Engine(dirs=[os.path.join(RECURSIVE, 'fs')])
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template = engine.get_template('self.html')
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with self.assertRaises(TemplateDoesNotExist):
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template.render(Context({}))
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def test_extend_cached(self):
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engine = Engine(
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dirs=[
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os.path.join(RECURSIVE, 'fs'),
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os.path.join(RECURSIVE, 'fs2'),
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os.path.join(RECURSIVE, 'fs3'),
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],
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loaders=[
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('django.template.loaders.cached.Loader', [
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'django.template.loaders.filesystem.Loader',
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]),
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],
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)
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template = engine.get_template('recursive.html')
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output = template.render(Context({}))
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self.assertEqual(output.strip(), 'fs3/recursive fs2/recursive fs/recursive')
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cache = engine.template_loaders[0].get_template_cache
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self.assertEqual(len(cache), 3)
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expected_path = os.path.join('fs', 'recursive.html')
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self.assertTrue(cache['recursive.html'].origin.name.endswith(expected_path))
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# Render another path that uses the same templates from the cache
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template = engine.get_template('other-recursive.html')
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output = template.render(Context({}))
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self.assertEqual(output.strip(), 'fs3/recursive fs2/recursive fs/recursive')
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# Template objects should not be duplicated.
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self.assertEqual(len(cache), 4)
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expected_path = os.path.join('fs', 'other-recursive.html')
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self.assertTrue(cache['other-recursive.html'].origin.name.endswith(expected_path))
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def test_unique_history_per_loader(self):
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"""
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Extending should continue even if two loaders return the same
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name for a template.
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"""
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engine = Engine(
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loaders=[
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['django.template.loaders.locmem.Loader', {
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'base.html': '{% extends "base.html" %}{% block content %}{{ block.super }} loader1{% endblock %}',
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}],
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['django.template.loaders.locmem.Loader', {
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'base.html': '{% block content %}loader2{% endblock %}',
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}],
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]
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)
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template = engine.get_template('base.html')
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output = template.render(Context({}))
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self.assertEqual(output.strip(), 'loader2 loader1')
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