348 lines
13 KiB
Python
348 lines
13 KiB
Python
from django.template.base import TemplateSyntaxError
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from django.template.context import Context
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from django.template.loader_tags import BlockContext, BlockNode
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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.assertRaisesMessage(TemplateSyntaxError, 'Empty variable tag on line 1'):
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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.assertRaisesMessage(TemplateSyntaxError, 'Empty variable tag on line 1'):
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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 on line 1: '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 on line 1: '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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@setup({'tpl-str': '%s', 'tpl-percent': '%%', 'tpl-weird-percent': '% %s'})
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def test_ignores_strings_that_look_like_format_interpolation(self):
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output = self.engine.render_to_string('tpl-str')
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self.assertEqual(output, '%s')
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output = self.engine.render_to_string('tpl-percent')
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self.assertEqual(output, '%%')
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output = self.engine.render_to_string('tpl-weird-percent')
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self.assertEqual(output, '% %s')
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class BlockContextTests(SimpleTestCase):
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def test_repr(self):
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block_context = BlockContext()
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block_context.add_blocks({'content': BlockNode('content', [])})
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self.assertEqual(
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repr(block_context),
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"<BlockContext: blocks=defaultdict(<class 'list'>, "
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"{'content': [<Block Node: content. Contents: []>]})>",
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)
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