537 lines
18 KiB
Python
537 lines
18 KiB
Python
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import os
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import traceback
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import unittest
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from tornado.escape import utf8, native_str, to_unicode
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from tornado.template import Template, DictLoader, ParseError, Loader
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from tornado.util import ObjectDict
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import typing # noqa: F401
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class TemplateTest(unittest.TestCase):
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def test_simple(self):
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template = Template("Hello {{ name }}!")
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self.assertEqual(template.generate(name="Ben"), b"Hello Ben!")
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def test_bytes(self):
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template = Template("Hello {{ name }}!")
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self.assertEqual(template.generate(name=utf8("Ben")), b"Hello Ben!")
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def test_expressions(self):
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template = Template("2 + 2 = {{ 2 + 2 }}")
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self.assertEqual(template.generate(), b"2 + 2 = 4")
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def test_comment(self):
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template = Template("Hello{# TODO i18n #} {{ name }}!")
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self.assertEqual(template.generate(name=utf8("Ben")), b"Hello Ben!")
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def test_include(self):
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loader = DictLoader(
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{
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"index.html": '{% include "header.html" %}\nbody text',
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"header.html": "header text",
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}
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)
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self.assertEqual(
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loader.load("index.html").generate(), b"header text\nbody text"
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)
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def test_extends(self):
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loader = DictLoader(
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{
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"base.html": """\
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<title>{% block title %}default title{% end %}</title>
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<body>{% block body %}default body{% end %}</body>
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""",
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"page.html": """\
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{% extends "base.html" %}
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{% block title %}page title{% end %}
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{% block body %}page body{% end %}
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""",
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}
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)
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self.assertEqual(
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loader.load("page.html").generate(),
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b"<title>page title</title>\n<body>page body</body>\n",
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)
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def test_relative_load(self):
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loader = DictLoader(
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{
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"a/1.html": "{% include '2.html' %}",
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"a/2.html": "{% include '../b/3.html' %}",
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"b/3.html": "ok",
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}
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)
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self.assertEqual(loader.load("a/1.html").generate(), b"ok")
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def test_escaping(self):
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self.assertRaises(ParseError, lambda: Template("{{"))
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self.assertRaises(ParseError, lambda: Template("{%"))
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self.assertEqual(Template("{{!").generate(), b"{{")
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self.assertEqual(Template("{%!").generate(), b"{%")
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self.assertEqual(Template("{#!").generate(), b"{#")
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self.assertEqual(
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Template("{{ 'expr' }} {{!jquery expr}}").generate(),
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b"expr {{jquery expr}}",
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)
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def test_unicode_template(self):
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template = Template(utf8(u"\u00e9"))
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self.assertEqual(template.generate(), utf8(u"\u00e9"))
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def test_unicode_literal_expression(self):
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# Unicode literals should be usable in templates. Note that this
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# test simulates unicode characters appearing directly in the
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# template file (with utf8 encoding), i.e. \u escapes would not
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# be used in the template file itself.
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template = Template(utf8(u'{{ "\u00e9" }}'))
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self.assertEqual(template.generate(), utf8(u"\u00e9"))
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def test_custom_namespace(self):
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loader = DictLoader(
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{"test.html": "{{ inc(5) }}"}, namespace={"inc": lambda x: x + 1}
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)
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self.assertEqual(loader.load("test.html").generate(), b"6")
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def test_apply(self):
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def upper(s):
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return s.upper()
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template = Template(utf8("{% apply upper %}foo{% end %}"))
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self.assertEqual(template.generate(upper=upper), b"FOO")
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def test_unicode_apply(self):
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def upper(s):
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return to_unicode(s).upper()
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template = Template(utf8(u"{% apply upper %}foo \u00e9{% end %}"))
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self.assertEqual(template.generate(upper=upper), utf8(u"FOO \u00c9"))
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def test_bytes_apply(self):
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def upper(s):
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return utf8(to_unicode(s).upper())
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template = Template(utf8(u"{% apply upper %}foo \u00e9{% end %}"))
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self.assertEqual(template.generate(upper=upper), utf8(u"FOO \u00c9"))
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def test_if(self):
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template = Template(utf8("{% if x > 4 %}yes{% else %}no{% end %}"))
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self.assertEqual(template.generate(x=5), b"yes")
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self.assertEqual(template.generate(x=3), b"no")
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def test_if_empty_body(self):
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template = Template(utf8("{% if True %}{% else %}{% end %}"))
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self.assertEqual(template.generate(), b"")
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def test_try(self):
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template = Template(
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utf8(
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"""{% try %}
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try{% set y = 1/x %}
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{% except %}-except
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{% else %}-else
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{% finally %}-finally
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{% end %}"""
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)
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)
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self.assertEqual(template.generate(x=1), b"\ntry\n-else\n-finally\n")
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self.assertEqual(template.generate(x=0), b"\ntry-except\n-finally\n")
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def test_comment_directive(self):
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template = Template(utf8("{% comment blah blah %}foo"))
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self.assertEqual(template.generate(), b"foo")
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def test_break_continue(self):
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template = Template(
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utf8(
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"""\
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{% for i in range(10) %}
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{% if i == 2 %}
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{% continue %}
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{% end %}
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{{ i }}
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{% if i == 6 %}
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{% break %}
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{% end %}
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{% end %}"""
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)
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)
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result = template.generate()
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# remove extraneous whitespace
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result = b"".join(result.split())
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self.assertEqual(result, b"013456")
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def test_break_outside_loop(self):
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try:
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Template(utf8("{% break %}"))
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raise Exception("Did not get expected exception")
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except ParseError:
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pass
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def test_break_in_apply(self):
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# This test verifies current behavior, although of course it would
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# be nice if apply didn't cause seemingly unrelated breakage
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try:
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Template(
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utf8("{% for i in [] %}{% apply foo %}{% break %}{% end %}{% end %}")
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)
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raise Exception("Did not get expected exception")
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except ParseError:
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pass
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@unittest.skip("no testable future imports")
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def test_no_inherit_future(self):
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# TODO(bdarnell): make a test like this for one of the future
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# imports available in python 3. Unfortunately they're harder
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# to use in a template than division was.
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# This file has from __future__ import division...
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self.assertEqual(1 / 2, 0.5)
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# ...but the template doesn't
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template = Template("{{ 1 / 2 }}")
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self.assertEqual(template.generate(), "0")
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def test_non_ascii_name(self):
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loader = DictLoader({u"t\u00e9st.html": "hello"})
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self.assertEqual(loader.load(u"t\u00e9st.html").generate(), b"hello")
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class StackTraceTest(unittest.TestCase):
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def test_error_line_number_expression(self):
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loader = DictLoader(
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{
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"test.html": """one
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two{{1/0}}
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three
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"""
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}
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)
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try:
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loader.load("test.html").generate()
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self.fail("did not get expected exception")
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except ZeroDivisionError:
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self.assertTrue("# test.html:2" in traceback.format_exc())
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def test_error_line_number_directive(self):
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loader = DictLoader(
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{
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"test.html": """one
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two{%if 1/0%}
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three{%end%}
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"""
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}
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)
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try:
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loader.load("test.html").generate()
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self.fail("did not get expected exception")
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except ZeroDivisionError:
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self.assertTrue("# test.html:2" in traceback.format_exc())
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def test_error_line_number_module(self):
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loader = None # type: typing.Optional[DictLoader]
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def load_generate(path, **kwargs):
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assert loader is not None
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return loader.load(path).generate(**kwargs)
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loader = DictLoader(
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{"base.html": "{% module Template('sub.html') %}", "sub.html": "{{1/0}}"},
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namespace={"_tt_modules": ObjectDict(Template=load_generate)},
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)
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try:
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loader.load("base.html").generate()
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self.fail("did not get expected exception")
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except ZeroDivisionError:
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exc_stack = traceback.format_exc()
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self.assertTrue("# base.html:1" in exc_stack)
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self.assertTrue("# sub.html:1" in exc_stack)
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def test_error_line_number_include(self):
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loader = DictLoader(
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{"base.html": "{% include 'sub.html' %}", "sub.html": "{{1/0}}"}
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)
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try:
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loader.load("base.html").generate()
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self.fail("did not get expected exception")
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except ZeroDivisionError:
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self.assertTrue("# sub.html:1 (via base.html:1)" in traceback.format_exc())
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def test_error_line_number_extends_base_error(self):
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loader = DictLoader(
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{"base.html": "{{1/0}}", "sub.html": "{% extends 'base.html' %}"}
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)
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try:
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loader.load("sub.html").generate()
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self.fail("did not get expected exception")
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except ZeroDivisionError:
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exc_stack = traceback.format_exc()
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self.assertTrue("# base.html:1" in exc_stack)
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def test_error_line_number_extends_sub_error(self):
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loader = DictLoader(
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{
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"base.html": "{% block 'block' %}{% end %}",
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"sub.html": """
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{% extends 'base.html' %}
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{% block 'block' %}
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{{1/0}}
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{% end %}
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""",
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}
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)
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try:
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loader.load("sub.html").generate()
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self.fail("did not get expected exception")
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except ZeroDivisionError:
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self.assertTrue("# sub.html:4 (via base.html:1)" in traceback.format_exc())
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def test_multi_includes(self):
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loader = DictLoader(
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{
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"a.html": "{% include 'b.html' %}",
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"b.html": "{% include 'c.html' %}",
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"c.html": "{{1/0}}",
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}
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)
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try:
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loader.load("a.html").generate()
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self.fail("did not get expected exception")
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except ZeroDivisionError:
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self.assertTrue(
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"# c.html:1 (via b.html:1, a.html:1)" in traceback.format_exc()
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)
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class ParseErrorDetailTest(unittest.TestCase):
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def test_details(self):
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loader = DictLoader({"foo.html": "\n\n{{"})
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with self.assertRaises(ParseError) as cm:
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loader.load("foo.html")
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self.assertEqual("Missing end expression }} at foo.html:3", str(cm.exception))
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self.assertEqual("foo.html", cm.exception.filename)
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self.assertEqual(3, cm.exception.lineno)
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def test_custom_parse_error(self):
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# Make sure that ParseErrors remain compatible with their
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# pre-4.3 signature.
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self.assertEqual("asdf at None:0", str(ParseError("asdf")))
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class AutoEscapeTest(unittest.TestCase):
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def setUp(self):
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self.templates = {
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"escaped.html": "{% autoescape xhtml_escape %}{{ name }}",
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"unescaped.html": "{% autoescape None %}{{ name }}",
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"default.html": "{{ name }}",
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"include.html": """\
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escaped: {% include 'escaped.html' %}
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unescaped: {% include 'unescaped.html' %}
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default: {% include 'default.html' %}
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""",
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"escaped_block.html": """\
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{% autoescape xhtml_escape %}\
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{% block name %}base: {{ name }}{% end %}""",
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"unescaped_block.html": """\
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{% autoescape None %}\
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{% block name %}base: {{ name }}{% end %}""",
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# Extend a base template with different autoescape policy,
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# with and without overriding the base's blocks
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"escaped_extends_unescaped.html": """\
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{% autoescape xhtml_escape %}\
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{% extends "unescaped_block.html" %}""",
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"escaped_overrides_unescaped.html": """\
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{% autoescape xhtml_escape %}\
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{% extends "unescaped_block.html" %}\
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{% block name %}extended: {{ name }}{% end %}""",
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"unescaped_extends_escaped.html": """\
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{% autoescape None %}\
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{% extends "escaped_block.html" %}""",
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"unescaped_overrides_escaped.html": """\
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{% autoescape None %}\
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{% extends "escaped_block.html" %}\
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{% block name %}extended: {{ name }}{% end %}""",
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"raw_expression.html": """\
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{% autoescape xhtml_escape %}\
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expr: {{ name }}
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raw: {% raw name %}""",
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}
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def test_default_off(self):
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loader = DictLoader(self.templates, autoescape=None)
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name = "Bobby <table>s"
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self.assertEqual(
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loader.load("escaped.html").generate(name=name), b"Bobby <table>s"
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)
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self.assertEqual(
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loader.load("unescaped.html").generate(name=name), b"Bobby <table>s"
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|
|
)
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("default.html").generate(name=name), b"Bobby <table>s"
|
||
|
|
)
|
||
|
|
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("include.html").generate(name=name),
|
||
|
|
b"escaped: Bobby <table>s\n"
|
||
|
|
b"unescaped: Bobby <table>s\n"
|
||
|
|
b"default: Bobby <table>s\n",
|
||
|
|
)
|
||
|
|
|
||
|
|
def test_default_on(self):
|
||
|
|
loader = DictLoader(self.templates, autoescape="xhtml_escape")
|
||
|
|
name = "Bobby <table>s"
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("escaped.html").generate(name=name), b"Bobby <table>s"
|
||
|
|
)
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("unescaped.html").generate(name=name), b"Bobby <table>s"
|
||
|
|
)
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("default.html").generate(name=name), b"Bobby <table>s"
|
||
|
|
)
|
||
|
|
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("include.html").generate(name=name),
|
||
|
|
b"escaped: Bobby <table>s\n"
|
||
|
|
b"unescaped: Bobby <table>s\n"
|
||
|
|
b"default: Bobby <table>s\n",
|
||
|
|
)
|
||
|
|
|
||
|
|
def test_unextended_block(self):
|
||
|
|
loader = DictLoader(self.templates)
|
||
|
|
name = "<script>"
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("escaped_block.html").generate(name=name),
|
||
|
|
b"base: <script>",
|
||
|
|
)
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("unescaped_block.html").generate(name=name), b"base: <script>"
|
||
|
|
)
|
||
|
|
|
||
|
|
def test_extended_block(self):
|
||
|
|
loader = DictLoader(self.templates)
|
||
|
|
|
||
|
|
def render(name):
|
||
|
|
return loader.load(name).generate(name="<script>")
|
||
|
|
|
||
|
|
self.assertEqual(render("escaped_extends_unescaped.html"), b"base: <script>")
|
||
|
|
self.assertEqual(
|
||
|
|
render("escaped_overrides_unescaped.html"), b"extended: <script>"
|
||
|
|
)
|
||
|
|
|
||
|
|
self.assertEqual(
|
||
|
|
render("unescaped_extends_escaped.html"), b"base: <script>"
|
||
|
|
)
|
||
|
|
self.assertEqual(
|
||
|
|
render("unescaped_overrides_escaped.html"), b"extended: <script>"
|
||
|
|
)
|
||
|
|
|
||
|
|
def test_raw_expression(self):
|
||
|
|
loader = DictLoader(self.templates)
|
||
|
|
|
||
|
|
def render(name):
|
||
|
|
return loader.load(name).generate(name='<>&"')
|
||
|
|
|
||
|
|
self.assertEqual(
|
||
|
|
render("raw_expression.html"), b"expr: <>&"\n" b'raw: <>&"'
|
||
|
|
)
|
||
|
|
|
||
|
|
def test_custom_escape(self):
|
||
|
|
loader = DictLoader({"foo.py": "{% autoescape py_escape %}s = {{ name }}\n"})
|
||
|
|
|
||
|
|
def py_escape(s):
|
||
|
|
self.assertEqual(type(s), bytes)
|
||
|
|
return repr(native_str(s))
|
||
|
|
|
||
|
|
def render(template, name):
|
||
|
|
return loader.load(template).generate(py_escape=py_escape, name=name)
|
||
|
|
|
||
|
|
self.assertEqual(render("foo.py", "<html>"), b"s = '<html>'\n")
|
||
|
|
self.assertEqual(render("foo.py", "';sys.exit()"), b"""s = "';sys.exit()"\n""")
|
||
|
|
self.assertEqual(
|
||
|
|
render("foo.py", ["not a string"]), b"""s = "['not a string']"\n"""
|
||
|
|
)
|
||
|
|
|
||
|
|
def test_manual_minimize_whitespace(self):
|
||
|
|
# Whitespace including newlines is allowed within template tags
|
||
|
|
# and directives, and this is one way to avoid long lines while
|
||
|
|
# keeping extra whitespace out of the rendered output.
|
||
|
|
loader = DictLoader(
|
||
|
|
{
|
||
|
|
"foo.txt": """\
|
||
|
|
{% for i in items
|
||
|
|
%}{% if i > 0 %}, {% end %}{#
|
||
|
|
#}{{i
|
||
|
|
}}{% end
|
||
|
|
%}"""
|
||
|
|
}
|
||
|
|
)
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("foo.txt").generate(items=range(5)), b"0, 1, 2, 3, 4"
|
||
|
|
)
|
||
|
|
|
||
|
|
def test_whitespace_by_filename(self):
|
||
|
|
# Default whitespace handling depends on the template filename.
|
||
|
|
loader = DictLoader(
|
||
|
|
{
|
||
|
|
"foo.html": " \n\t\n asdf\t ",
|
||
|
|
"bar.js": " \n\n\n\t qwer ",
|
||
|
|
"baz.txt": "\t zxcv\n\n",
|
||
|
|
"include.html": " {% include baz.txt %} \n ",
|
||
|
|
"include.txt": "\t\t{% include foo.html %} ",
|
||
|
|
}
|
||
|
|
)
|
||
|
|
|
||
|
|
# HTML and JS files have whitespace compressed by default.
|
||
|
|
self.assertEqual(loader.load("foo.html").generate(), b"\nasdf ")
|
||
|
|
self.assertEqual(loader.load("bar.js").generate(), b"\nqwer ")
|
||
|
|
# TXT files do not.
|
||
|
|
self.assertEqual(loader.load("baz.txt").generate(), b"\t zxcv\n\n")
|
||
|
|
|
||
|
|
# Each file maintains its own status even when included in
|
||
|
|
# a file of the other type.
|
||
|
|
self.assertEqual(loader.load("include.html").generate(), b" \t zxcv\n\n\n")
|
||
|
|
self.assertEqual(loader.load("include.txt").generate(), b"\t\t\nasdf ")
|
||
|
|
|
||
|
|
def test_whitespace_by_loader(self):
|
||
|
|
templates = {"foo.html": "\t\tfoo\n\n", "bar.txt": "\t\tbar\n\n"}
|
||
|
|
loader = DictLoader(templates, whitespace="all")
|
||
|
|
self.assertEqual(loader.load("foo.html").generate(), b"\t\tfoo\n\n")
|
||
|
|
self.assertEqual(loader.load("bar.txt").generate(), b"\t\tbar\n\n")
|
||
|
|
|
||
|
|
loader = DictLoader(templates, whitespace="single")
|
||
|
|
self.assertEqual(loader.load("foo.html").generate(), b" foo\n")
|
||
|
|
self.assertEqual(loader.load("bar.txt").generate(), b" bar\n")
|
||
|
|
|
||
|
|
loader = DictLoader(templates, whitespace="oneline")
|
||
|
|
self.assertEqual(loader.load("foo.html").generate(), b" foo ")
|
||
|
|
self.assertEqual(loader.load("bar.txt").generate(), b" bar ")
|
||
|
|
|
||
|
|
def test_whitespace_directive(self):
|
||
|
|
loader = DictLoader(
|
||
|
|
{
|
||
|
|
"foo.html": """\
|
||
|
|
{% whitespace oneline %}
|
||
|
|
{% for i in range(3) %}
|
||
|
|
{{ i }}
|
||
|
|
{% end %}
|
||
|
|
{% whitespace all %}
|
||
|
|
pre\tformatted
|
||
|
|
"""
|
||
|
|
}
|
||
|
|
)
|
||
|
|
self.assertEqual(
|
||
|
|
loader.load("foo.html").generate(), b" 0 1 2 \n pre\tformatted\n"
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class TemplateLoaderTest(unittest.TestCase):
|
||
|
|
def setUp(self):
|
||
|
|
self.loader = Loader(os.path.join(os.path.dirname(__file__), "templates"))
|
||
|
|
|
||
|
|
def test_utf8_in_file(self):
|
||
|
|
tmpl = self.loader.load("utf8.html")
|
||
|
|
result = tmpl.generate()
|
||
|
|
self.assertEqual(to_unicode(result).strip(), u"H\u00e9llo")
|