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262 lines
10 KiB
Python
262 lines
10 KiB
Python
9 years ago
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# -*- coding: utf-8 -*-
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"""
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jinja2.testsuite.api
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~~~~~~~~~~~~~~~~~~~~
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Tests the public API and related stuff.
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:copyright: (c) 2010 by the Jinja Team.
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:license: BSD, see LICENSE for more details.
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"""
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import unittest
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import os
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import tempfile
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import shutil
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from jinja2.testsuite import JinjaTestCase
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from jinja2._compat import next
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from jinja2 import Environment, Undefined, DebugUndefined, \
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StrictUndefined, UndefinedError, meta, \
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is_undefined, Template, DictLoader
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from jinja2.utils import Cycler
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env = Environment()
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class ExtendedAPITestCase(JinjaTestCase):
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def test_item_and_attribute(self):
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from jinja2.sandbox import SandboxedEnvironment
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for env in Environment(), SandboxedEnvironment():
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# the |list is necessary for python3
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tmpl = env.from_string('{{ foo.items()|list }}')
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assert tmpl.render(foo={'items': 42}) == "[('items', 42)]"
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tmpl = env.from_string('{{ foo|attr("items")()|list }}')
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assert tmpl.render(foo={'items': 42}) == "[('items', 42)]"
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tmpl = env.from_string('{{ foo["items"] }}')
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assert tmpl.render(foo={'items': 42}) == '42'
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def test_finalizer(self):
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def finalize_none_empty(value):
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if value is None:
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value = u''
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return value
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env = Environment(finalize=finalize_none_empty)
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tmpl = env.from_string('{% for item in seq %}|{{ item }}{% endfor %}')
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assert tmpl.render(seq=(None, 1, "foo")) == '||1|foo'
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tmpl = env.from_string('<{{ none }}>')
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assert tmpl.render() == '<>'
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def test_cycler(self):
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items = 1, 2, 3
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c = Cycler(*items)
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for item in items + items:
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assert c.current == item
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assert next(c) == item
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next(c)
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assert c.current == 2
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c.reset()
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assert c.current == 1
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def test_expressions(self):
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expr = env.compile_expression("foo")
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assert expr() is None
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assert expr(foo=42) == 42
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expr2 = env.compile_expression("foo", undefined_to_none=False)
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assert is_undefined(expr2())
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expr = env.compile_expression("42 + foo")
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assert expr(foo=42) == 84
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def test_template_passthrough(self):
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t = Template('Content')
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assert env.get_template(t) is t
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assert env.select_template([t]) is t
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assert env.get_or_select_template([t]) is t
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assert env.get_or_select_template(t) is t
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def test_autoescape_autoselect(self):
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def select_autoescape(name):
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if name is None or '.' not in name:
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return False
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return name.endswith('.html')
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env = Environment(autoescape=select_autoescape,
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loader=DictLoader({
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'test.txt': '{{ foo }}',
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'test.html': '{{ foo }}'
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}))
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t = env.get_template('test.txt')
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assert t.render(foo='<foo>') == '<foo>'
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t = env.get_template('test.html')
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assert t.render(foo='<foo>') == '<foo>'
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t = env.from_string('{{ foo }}')
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assert t.render(foo='<foo>') == '<foo>'
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class MetaTestCase(JinjaTestCase):
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def test_find_undeclared_variables(self):
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ast = env.parse('{% set foo = 42 %}{{ bar + foo }}')
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x = meta.find_undeclared_variables(ast)
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assert x == set(['bar'])
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ast = env.parse('{% set foo = 42 %}{{ bar + foo }}'
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'{% macro meh(x) %}{{ x }}{% endmacro %}'
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'{% for item in seq %}{{ muh(item) + meh(seq) }}{% endfor %}')
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x = meta.find_undeclared_variables(ast)
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assert x == set(['bar', 'seq', 'muh'])
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def test_find_refererenced_templates(self):
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ast = env.parse('{% extends "layout.html" %}{% include helper %}')
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i = meta.find_referenced_templates(ast)
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assert next(i) == 'layout.html'
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assert next(i) is None
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assert list(i) == []
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ast = env.parse('{% extends "layout.html" %}'
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'{% from "test.html" import a, b as c %}'
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'{% import "meh.html" as meh %}'
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'{% include "muh.html" %}')
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i = meta.find_referenced_templates(ast)
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assert list(i) == ['layout.html', 'test.html', 'meh.html', 'muh.html']
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def test_find_included_templates(self):
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ast = env.parse('{% include ["foo.html", "bar.html"] %}')
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i = meta.find_referenced_templates(ast)
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assert list(i) == ['foo.html', 'bar.html']
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ast = env.parse('{% include ("foo.html", "bar.html") %}')
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i = meta.find_referenced_templates(ast)
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assert list(i) == ['foo.html', 'bar.html']
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ast = env.parse('{% include ["foo.html", "bar.html", foo] %}')
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i = meta.find_referenced_templates(ast)
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assert list(i) == ['foo.html', 'bar.html', None]
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ast = env.parse('{% include ("foo.html", "bar.html", foo) %}')
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i = meta.find_referenced_templates(ast)
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assert list(i) == ['foo.html', 'bar.html', None]
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class StreamingTestCase(JinjaTestCase):
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def test_basic_streaming(self):
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tmpl = env.from_string("<ul>{% for item in seq %}<li>{{ loop.index "
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"}} - {{ item }}</li>{%- endfor %}</ul>")
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stream = tmpl.stream(seq=list(range(4)))
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self.assert_equal(next(stream), '<ul>')
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self.assert_equal(next(stream), '<li>1 - 0</li>')
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self.assert_equal(next(stream), '<li>2 - 1</li>')
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self.assert_equal(next(stream), '<li>3 - 2</li>')
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self.assert_equal(next(stream), '<li>4 - 3</li>')
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self.assert_equal(next(stream), '</ul>')
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def test_buffered_streaming(self):
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tmpl = env.from_string("<ul>{% for item in seq %}<li>{{ loop.index "
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"}} - {{ item }}</li>{%- endfor %}</ul>")
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stream = tmpl.stream(seq=list(range(4)))
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stream.enable_buffering(size=3)
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self.assert_equal(next(stream), u'<ul><li>1 - 0</li><li>2 - 1</li>')
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self.assert_equal(next(stream), u'<li>3 - 2</li><li>4 - 3</li></ul>')
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def test_streaming_behavior(self):
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tmpl = env.from_string("")
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stream = tmpl.stream()
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assert not stream.buffered
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stream.enable_buffering(20)
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assert stream.buffered
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stream.disable_buffering()
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assert not stream.buffered
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def test_dump_stream(self):
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tmp = tempfile.mkdtemp()
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try:
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tmpl = env.from_string(u"\u2713")
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stream = tmpl.stream()
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stream.dump(os.path.join(tmp, 'dump.txt'), 'utf-8')
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with open(os.path.join(tmp, 'dump.txt'), 'rb') as f:
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self.assertEqual(f.read(), b'\xe2\x9c\x93')
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finally:
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shutil.rmtree(tmp)
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class UndefinedTestCase(JinjaTestCase):
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def test_stopiteration_is_undefined(self):
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def test():
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raise StopIteration()
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t = Template('A{{ test() }}B')
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assert t.render(test=test) == 'AB'
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t = Template('A{{ test().missingattribute }}B')
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self.assert_raises(UndefinedError, t.render, test=test)
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def test_undefined_and_special_attributes(self):
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try:
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Undefined('Foo').__dict__
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except AttributeError:
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pass
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else:
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assert False, "Expected actual attribute error"
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def test_default_undefined(self):
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env = Environment(undefined=Undefined)
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self.assert_equal(env.from_string('{{ missing }}').render(), u'')
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self.assert_raises(UndefinedError,
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env.from_string('{{ missing.attribute }}').render)
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self.assert_equal(env.from_string('{{ missing|list }}').render(), '[]')
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self.assert_equal(env.from_string('{{ missing is not defined }}').render(), 'True')
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self.assert_equal(env.from_string('{{ foo.missing }}').render(foo=42), '')
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self.assert_equal(env.from_string('{{ not missing }}').render(), 'True')
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def test_debug_undefined(self):
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env = Environment(undefined=DebugUndefined)
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self.assert_equal(env.from_string('{{ missing }}').render(), '{{ missing }}')
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self.assert_raises(UndefinedError,
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env.from_string('{{ missing.attribute }}').render)
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self.assert_equal(env.from_string('{{ missing|list }}').render(), '[]')
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self.assert_equal(env.from_string('{{ missing is not defined }}').render(), 'True')
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self.assert_equal(env.from_string('{{ foo.missing }}').render(foo=42),
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u"{{ no such element: int object['missing'] }}")
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self.assert_equal(env.from_string('{{ not missing }}').render(), 'True')
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def test_strict_undefined(self):
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env = Environment(undefined=StrictUndefined)
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self.assert_raises(UndefinedError, env.from_string('{{ missing }}').render)
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self.assert_raises(UndefinedError, env.from_string('{{ missing.attribute }}').render)
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self.assert_raises(UndefinedError, env.from_string('{{ missing|list }}').render)
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self.assert_equal(env.from_string('{{ missing is not defined }}').render(), 'True')
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self.assert_raises(UndefinedError, env.from_string('{{ foo.missing }}').render, foo=42)
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self.assert_raises(UndefinedError, env.from_string('{{ not missing }}').render)
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self.assert_equal(env.from_string('{{ missing|default("default", true) }}').render(), 'default')
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def test_indexing_gives_undefined(self):
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t = Template("{{ var[42].foo }}")
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self.assert_raises(UndefinedError, t.render, var=0)
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def test_none_gives_proper_error(self):
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try:
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Environment().getattr(None, 'split')()
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except UndefinedError as e:
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assert e.message == "'None' has no attribute 'split'"
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else:
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assert False, 'expected exception'
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def test_object_repr(self):
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try:
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Undefined(obj=42, name='upper')()
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except UndefinedError as e:
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assert e.message == "'int object' has no attribute 'upper'"
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else:
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assert False, 'expected exception'
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def suite():
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suite = unittest.TestSuite()
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suite.addTest(unittest.makeSuite(ExtendedAPITestCase))
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suite.addTest(unittest.makeSuite(MetaTestCase))
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suite.addTest(unittest.makeSuite(StreamingTestCase))
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suite.addTest(unittest.makeSuite(UndefinedTestCase))
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return suite
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