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55f12f8709
This patch does three major things: * Merges the django.template.debug implementation into django.template.base. * Simplifies the debug implementation. The old implementation copied debug information to every token and node. The django_template_source attribute was set in multiple places, some quite hacky, like django.template.defaulttags.ForNode. Debug information is now annotated in two high-level places: * Template.compile_nodelist for errors during parsing * Node.render_annotated for errors during rendering These were chosen because they have access to the template and context as well as to all exceptions that happen during either the parse or render phase. * Moves the contextual line traceback information creation from django.views.debug into django.template.base.Template. The debug views now only deal with the presentation of the debug information.
326 lines
12 KiB
Python
326 lines
12 KiB
Python
from django.template.base import Context, TemplateSyntaxError
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from django.test import SimpleTestCase
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from ..utils import SilentAttrClass, SilentGetItemClass, SomeClass, setup
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basic_templates = {
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'basic-syntax01': 'something cool',
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'basic-syntax02': '{{ headline }}',
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'basic-syntax03': '{{ first }} --- {{ second }}',
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}
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class BasicSyntaxTests(SimpleTestCase):
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@setup(basic_templates)
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def test_basic_syntax01(self):
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"""
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Plain text should go through the template parser untouched.
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"""
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output = self.engine.render_to_string('basic-syntax01')
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self.assertEqual(output, "something cool")
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@setup(basic_templates)
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def test_basic_syntax02(self):
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"""
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Variables should be replaced with their value in the current
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context
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"""
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output = self.engine.render_to_string('basic-syntax02', {'headline': 'Success'})
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self.assertEqual(output, 'Success')
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@setup(basic_templates)
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def test_basic_syntax03(self):
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"""
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More than one replacement variable is allowed in a template
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"""
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output = self.engine.render_to_string('basic-syntax03', {"first": 1, "second": 2})
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self.assertEqual(output, '1 --- 2')
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@setup({'basic-syntax04': 'as{{ missing }}df'})
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def test_basic_syntax04(self):
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"""
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Fail silently when a variable is not found in the current context
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"""
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output = self.engine.render_to_string('basic-syntax04')
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if self.engine.string_if_invalid:
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self.assertEqual(output, 'asINVALIDdf')
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else:
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self.assertEqual(output, 'asdf')
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@setup({'basic-syntax06': '{{ multi word variable }}'})
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def test_basic_syntax06(self):
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"""
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A variable may not contain more than one word
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"""
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax06')
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@setup({'basic-syntax07': '{{ }}'})
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def test_basic_syntax07(self):
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"""
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Raise TemplateSyntaxError for empty variable tags.
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"""
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax07')
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@setup({'basic-syntax08': '{{ }}'})
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def test_basic_syntax08(self):
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"""
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Raise TemplateSyntaxError for empty variable tags.
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"""
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax08')
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@setup({'basic-syntax09': '{{ var.method }}'})
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def test_basic_syntax09(self):
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"""
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Attribute syntax allows a template to call an object's attribute
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"""
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output = self.engine.render_to_string('basic-syntax09', {'var': SomeClass()})
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self.assertEqual(output, 'SomeClass.method')
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@setup({'basic-syntax10': '{{ var.otherclass.method }}'})
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def test_basic_syntax10(self):
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"""
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Multiple levels of attribute access are allowed.
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"""
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output = self.engine.render_to_string('basic-syntax10', {'var': SomeClass()})
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self.assertEqual(output, 'OtherClass.method')
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@setup({'basic-syntax11': '{{ var.blech }}'})
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def test_basic_syntax11(self):
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"""
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Fail silently when a variable's attribute isn't found.
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"""
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output = self.engine.render_to_string('basic-syntax11', {'var': SomeClass()})
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if self.engine.string_if_invalid:
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self.assertEqual(output, 'INVALID')
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else:
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self.assertEqual(output, '')
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@setup({'basic-syntax12': '{{ var.__dict__ }}'})
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def test_basic_syntax12(self):
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"""
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Raise TemplateSyntaxError when trying to access a variable
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beginning with an underscore.
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"""
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax12')
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# Raise TemplateSyntaxError when trying to access a variable
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# containing an illegal character.
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@setup({'basic-syntax13': "{{ va>r }}"})
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def test_basic_syntax13(self):
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax13')
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@setup({'basic-syntax14': "{{ (var.r) }}"})
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def test_basic_syntax14(self):
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax14')
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@setup({'basic-syntax15': "{{ sp%am }}"})
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def test_basic_syntax15(self):
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax15')
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@setup({'basic-syntax16': "{{ eggs! }}"})
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def test_basic_syntax16(self):
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax16')
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@setup({'basic-syntax17': "{{ moo? }}"})
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def test_basic_syntax17(self):
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax17')
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@setup({'basic-syntax18': "{{ foo.bar }}"})
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def test_basic_syntax18(self):
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"""
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Attribute syntax allows a template to call a dictionary key's
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value.
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"""
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output = self.engine.render_to_string('basic-syntax18', {"foo": {"bar": "baz"}})
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self.assertEqual(output, "baz")
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@setup({'basic-syntax19': "{{ foo.spam }}"})
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def test_basic_syntax19(self):
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"""
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Fail silently when a variable's dictionary key isn't found.
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"""
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output = self.engine.render_to_string('basic-syntax19', {"foo": {"bar": "baz"}})
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if self.engine.string_if_invalid:
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self.assertEqual(output, 'INVALID')
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else:
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self.assertEqual(output, '')
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@setup({'basic-syntax20': "{{ var.method2 }}"})
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def test_basic_syntax20(self):
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"""
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Fail silently when accessing a non-simple method
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"""
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output = self.engine.render_to_string('basic-syntax20', {'var': SomeClass()})
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if self.engine.string_if_invalid:
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self.assertEqual(output, 'INVALID')
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else:
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self.assertEqual(output, '')
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@setup({'basic-syntax20b': "{{ var.method5 }}"})
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def test_basic_syntax20b(self):
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"""
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Don't silence a TypeError if it was raised inside a callable.
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"""
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template = self.engine.get_template('basic-syntax20b')
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with self.assertRaises(TypeError):
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template.render(Context({'var': SomeClass()}))
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# Don't get confused when parsing something that is almost, but not
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# quite, a template tag.
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@setup({'basic-syntax21': "a {{ moo %} b"})
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def test_basic_syntax21(self):
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output = self.engine.render_to_string('basic-syntax21')
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self.assertEqual(output, "a {{ moo %} b")
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@setup({'basic-syntax22': "{{ moo #}"})
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def test_basic_syntax22(self):
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output = self.engine.render_to_string('basic-syntax22')
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self.assertEqual(output, "{{ moo #}")
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@setup({'basic-syntax23': "{{ moo #} {{ cow }}"})
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def test_basic_syntax23(self):
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"""
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Treat "moo #} {{ cow" as the variable. Not ideal, but costly to work
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around, so this triggers an error.
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"""
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with self.assertRaises(TemplateSyntaxError):
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self.engine.get_template('basic-syntax23')
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@setup({'basic-syntax24': "{{ moo\n }}"})
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def test_basic_syntax24(self):
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"""
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Embedded newlines make it not-a-tag.
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"""
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output = self.engine.render_to_string('basic-syntax24')
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self.assertEqual(output, "{{ moo\n }}")
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# Literal strings are permitted inside variables, mostly for i18n
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# purposes.
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@setup({'basic-syntax25': '{{ "fred" }}'})
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def test_basic_syntax25(self):
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output = self.engine.render_to_string('basic-syntax25')
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self.assertEqual(output, "fred")
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@setup({'basic-syntax26': r'{{ "\"fred\"" }}'})
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def test_basic_syntax26(self):
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output = self.engine.render_to_string('basic-syntax26')
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self.assertEqual(output, "\"fred\"")
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@setup({'basic-syntax27': r'{{ _("\"fred\"") }}'})
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def test_basic_syntax27(self):
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output = self.engine.render_to_string('basic-syntax27')
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self.assertEqual(output, "\"fred\"")
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# #12554 -- Make sure a silent_variable_failure Exception is
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# suppressed on dictionary and attribute lookup.
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@setup({'basic-syntax28': "{{ a.b }}"})
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def test_basic_syntax28(self):
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output = self.engine.render_to_string('basic-syntax28', {'a': SilentGetItemClass()})
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if self.engine.string_if_invalid:
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self.assertEqual(output, 'INVALID')
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else:
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self.assertEqual(output, '')
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@setup({'basic-syntax29': "{{ a.b }}"})
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def test_basic_syntax29(self):
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output = self.engine.render_to_string('basic-syntax29', {'a': SilentAttrClass()})
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if self.engine.string_if_invalid:
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self.assertEqual(output, 'INVALID')
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else:
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self.assertEqual(output, '')
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# Something that starts like a number but has an extra lookup works
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# as a lookup.
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@setup({'basic-syntax30': "{{ 1.2.3 }}"})
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def test_basic_syntax30(self):
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output = self.engine.render_to_string(
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'basic-syntax30',
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{"1": {"2": {"3": "d"}}}
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)
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self.assertEqual(output, 'd')
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@setup({'basic-syntax31': "{{ 1.2.3 }}"})
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def test_basic_syntax31(self):
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output = self.engine.render_to_string(
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'basic-syntax31',
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{"1": {"2": ("a", "b", "c", "d")}},
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)
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self.assertEqual(output, 'd')
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@setup({'basic-syntax32': "{{ 1.2.3 }}"})
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def test_basic_syntax32(self):
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output = self.engine.render_to_string(
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'basic-syntax32',
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{"1": (("x", "x", "x", "x"), ("y", "y", "y", "y"), ("a", "b", "c", "d"))},
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)
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self.assertEqual(output, 'd')
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@setup({'basic-syntax33': "{{ 1.2.3 }}"})
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def test_basic_syntax33(self):
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output = self.engine.render_to_string(
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'basic-syntax33',
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{"1": ("xxxx", "yyyy", "abcd")},
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)
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self.assertEqual(output, 'd')
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@setup({'basic-syntax34': "{{ 1.2.3 }}"})
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def test_basic_syntax34(self):
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output = self.engine.render_to_string(
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'basic-syntax34',
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{"1": ({"x": "x"}, {"y": "y"}, {"z": "z", "3": "d"})}
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)
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self.assertEqual(output, 'd')
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# Numbers are numbers even if their digits are in the context.
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@setup({'basic-syntax35': "{{ 1 }}"})
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def test_basic_syntax35(self):
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output = self.engine.render_to_string('basic-syntax35', {"1": "abc"})
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self.assertEqual(output, '1')
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@setup({'basic-syntax36': "{{ 1.2 }}"})
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def test_basic_syntax36(self):
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output = self.engine.render_to_string('basic-syntax36', {"1": "abc"})
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self.assertEqual(output, '1.2')
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@setup({'basic-syntax37': '{{ callable }}'})
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def test_basic_syntax37(self):
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"""
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Call methods in the top level of the context.
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"""
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output = self.engine.render_to_string('basic-syntax37', {"callable": lambda: "foo bar"})
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self.assertEqual(output, 'foo bar')
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@setup({'basic-syntax38': '{{ var.callable }}'})
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def test_basic_syntax38(self):
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"""
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Call methods returned from dictionary lookups.
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"""
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output = self.engine.render_to_string('basic-syntax38', {"var": {"callable": lambda: "foo bar"}})
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self.assertEqual(output, 'foo bar')
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@setup({'template': '{% block content %}'})
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def test_unclosed_block(self):
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msg = "Unclosed tag 'block'. Looking for one of: endblock."
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with self.assertRaisesMessage(TemplateSyntaxError, msg):
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self.engine.render_to_string('template')
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@setup({'template': '{% if a %}'})
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def test_unclosed_block2(self):
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msg = "Unclosed tag 'if'. Looking for one of: elif, else, endif."
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with self.assertRaisesMessage(TemplateSyntaxError, msg):
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self.engine.render_to_string('template')
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