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# -*- coding: utf-8 -*-
"""
jinja2.testsuite.core_tags
~~~~~~~~~~~~~~~~~~~~~~~~~~
Test the core tags like for and if.
:copyright: (c) 2010 by the Jinja Team.
:license: BSD, see LICENSE for more details.
"""
import unittest
from jinja2.testsuite import JinjaTestCase
from jinja2 import Environment, TemplateSyntaxError, UndefinedError, \
DictLoader
env = Environment()
class ForLoopTestCase(JinjaTestCase):
def test_simple(self):
tmpl = env.from_string('{% for item in seq %}{{ item }}{% endfor %}')
assert tmpl.render(seq=range(10)) == '0123456789'
def test_embedded_for_in_else(self):
tmpl = env.from_string('{% for item in seq %}{{ loop.index0 }}{% else %}{% for i in range(3) %}{{ i }}{% endfor %}{% endfor %}')
assert tmpl.render(seq=[]) == '012'
def test_else(self):
tmpl = env.from_string('{% for item in seq %}XXX{% else %}...{% endfor %}')
assert tmpl.render() == '...'
def test_empty_blocks(self):
tmpl = env.from_string('<{% for item in seq %}{% else %}{% endfor %}>')
assert tmpl.render() == '<>'
def test_context_vars(self):
tmpl = env.from_string('''{% for item in seq -%}
{{ loop.index }}|{{ loop.index0 }}|{{ loop.revindex }}|{{
loop.revindex0 }}|{{ loop.first }}|{{ loop.last }}|{{
loop.length }}###{% endfor %}''')
one, two, _ = tmpl.render(seq=[0, 1]).split('###')
(one_index, one_index0, one_revindex, one_revindex0, one_first,
one_last, one_length) = one.split('|')
(two_index, two_index0, two_revindex, two_revindex0, two_first,
two_last, two_length) = two.split('|')
assert int(one_index) == 1 and int(two_index) == 2
assert int(one_index0) == 0 and int(two_index0) == 1
assert int(one_revindex) == 2 and int(two_revindex) == 1
assert int(one_revindex0) == 1 and int(two_revindex0) == 0
assert one_first == 'True' and two_first == 'False'
assert one_last == 'False' and two_last == 'True'
assert one_length == two_length == '2'
def test_cycling(self):
tmpl = env.from_string('''{% for item in seq %}{{
loop.cycle('<1>', '<2>') }}{% endfor %}{%
for item in seq %}{{ loop.cycle(*through) }}{% endfor %}''')
output = tmpl.render(seq=range(4), through=('<1>', '<2>'))
assert output == '<1><2>' * 4
def test_scope(self):
tmpl = env.from_string('{% for item in seq %}{% endfor %}{{ item }}')
output = tmpl.render(seq=range(10))
assert not output
def test_varlen(self):
def inner():
for item in range(5):
yield item
tmpl = env.from_string('{% for item in iter %}{{ item }}{% endfor %}')
output = tmpl.render(iter=inner())
assert output == '01234'
def test_noniter(self):
tmpl = env.from_string('{% for item in none %}...{% endfor %}')
self.assert_raises(TypeError, tmpl.render)
def test_recursive(self):
tmpl = env.from_string('''{% for item in seq recursive -%}
[{{ item.a }}{% if item.b %}<{{ loop(item.b) }}>{% endif %}]
{%- endfor %}''')
assert tmpl.render(seq=[
dict(a=1, b=[dict(a=1), dict(a=2)]),
dict(a=2, b=[dict(a=1), dict(a=2)]),
dict(a=3, b=[dict(a='a')])
]) == '[1<[1][2]>][2<[1][2]>][3<[a]>]'
def test_looploop(self):
tmpl = env.from_string('''{% for row in table %}
{%- set rowloop = loop -%}
{% for cell in row -%}
[{{ rowloop.index }}|{{ loop.index }}]
{%- endfor %}
{%- endfor %}''')
assert tmpl.render(table=['ab', 'cd']) == '[1|1][1|2][2|1][2|2]'
def test_reversed_bug(self):
tmpl = env.from_string('{% for i in items %}{{ i }}'
'{% if not loop.last %}'
',{% endif %}{% endfor %}')
assert tmpl.render(items=reversed([3, 2, 1])) == '1,2,3'
def test_loop_errors(self):
tmpl = env.from_string('''{% for item in [1] if loop.index
== 0 %}...{% endfor %}''')
self.assert_raises(UndefinedError, tmpl.render)
tmpl = env.from_string('''{% for item in [] %}...{% else
%}{{ loop }}{% endfor %}''')
assert tmpl.render() == ''
def test_loop_filter(self):
tmpl = env.from_string('{% for item in range(10) if item '
'is even %}[{{ item }}]{% endfor %}')
assert tmpl.render() == '[0][2][4][6][8]'
tmpl = env.from_string('''
{%- for item in range(10) if item is even %}[{{
loop.index }}:{{ item }}]{% endfor %}''')
assert tmpl.render() == '[1:0][2:2][3:4][4:6][5:8]'
def test_loop_unassignable(self):
self.assert_raises(TemplateSyntaxError, env.from_string,
'{% for loop in seq %}...{% endfor %}')
def test_scoped_special_var(self):
t = env.from_string('{% for s in seq %}[{{ loop.first }}{% for c in s %}'
'|{{ loop.first }}{% endfor %}]{% endfor %}')
assert t.render(seq=('ab', 'cd')) == '[True|True|False][False|True|False]'
def test_scoped_loop_var(self):
t = env.from_string('{% for x in seq %}{{ loop.first }}'
'{% for y in seq %}{% endfor %}{% endfor %}')
assert t.render(seq='ab') == 'TrueFalse'
t = env.from_string('{% for x in seq %}{% for y in seq %}'
'{{ loop.first }}{% endfor %}{% endfor %}')
assert t.render(seq='ab') == 'TrueFalseTrueFalse'
def test_recursive_empty_loop_iter(self):
t = env.from_string('''
{%- for item in foo recursive -%}{%- endfor -%}
''')
assert t.render(dict(foo=[])) == ''
def test_call_in_loop(self):
t = env.from_string('''
{%- macro do_something() -%}
[{{ caller() }}]
{%- endmacro %}
{%- for i in [1, 2, 3] %}
{%- call do_something() -%}
{{ i }}
{%- endcall %}
{%- endfor -%}
''')
assert t.render() == '[1][2][3]'
def test_scoping_bug(self):
t = env.from_string('''
{%- for item in foo %}...{{ item }}...{% endfor %}
{%- macro item(a) %}...{{ a }}...{% endmacro %}
{{- item(2) -}}
''')
assert t.render(foo=(1,)) == '...1......2...'
def test_unpacking(self):
tmpl = env.from_string('{% for a, b, c in [[1, 2, 3]] %}'
'{{ a }}|{{ b }}|{{ c }}{% endfor %}')
assert tmpl.render() == '1|2|3'
class IfConditionTestCase(JinjaTestCase):
def test_simple(self):
tmpl = env.from_string('''{% if true %}...{% endif %}''')
assert tmpl.render() == '...'
def test_elif(self):
tmpl = env.from_string('''{% if false %}XXX{% elif true
%}...{% else %}XXX{% endif %}''')
assert tmpl.render() == '...'
def test_else(self):
tmpl = env.from_string('{% if false %}XXX{% else %}...{% endif %}')
assert tmpl.render() == '...'
def test_empty(self):
tmpl = env.from_string('[{% if true %}{% else %}{% endif %}]')
assert tmpl.render() == '[]'
def test_complete(self):
tmpl = env.from_string('{% if a %}A{% elif b %}B{% elif c == d %}'
'C{% else %}D{% endif %}')
assert tmpl.render(a=0, b=False, c=42, d=42.0) == 'C'
def test_no_scope(self):
tmpl = env.from_string('{% if a %}{% set foo = 1 %}{% endif %}{{ foo }}')
assert tmpl.render(a=True) == '1'
tmpl = env.from_string('{% if true %}{% set foo = 1 %}{% endif %}{{ foo }}')
assert tmpl.render() == '1'
class MacrosTestCase(JinjaTestCase):
env = Environment(trim_blocks=True)
def test_simple(self):
tmpl = self.env.from_string('''\
{% macro say_hello(name) %}Hello {{ name }}!{% endmacro %}
{{ say_hello('Peter') }}''')
assert tmpl.render() == 'Hello Peter!'
def test_scoping(self):
tmpl = self.env.from_string('''\
{% macro level1(data1) %}
{% macro level2(data2) %}{{ data1 }}|{{ data2 }}{% endmacro %}
{{ level2('bar') }}{% endmacro %}
{{ level1('foo') }}''')
assert tmpl.render() == 'foo|bar'
def test_arguments(self):
tmpl = self.env.from_string('''\
{% macro m(a, b, c='c', d='d') %}{{ a }}|{{ b }}|{{ c }}|{{ d }}{% endmacro %}
{{ m() }}|{{ m('a') }}|{{ m('a', 'b') }}|{{ m(1, 2, 3) }}''')
assert tmpl.render() == '||c|d|a||c|d|a|b|c|d|1|2|3|d'
def test_trailing_comma(self):
tmpl = self.env.from_string('''\
{% macro m(a, b,) %}{{ a }}|{{ b }}{% endmacro %}
{{ m(1,2,) }}''')
assert tmpl.render() == '1|2'
def test_varargs(self):
tmpl = self.env.from_string('''\
{% macro test() %}{{ varargs|join('|') }}{% endmacro %}\
{{ test(1, 2, 3) }}''')
assert tmpl.render() == '1|2|3'
def test_simple_call(self):
tmpl = self.env.from_string('''\
{% macro test() %}[[{{ caller() }}]]{% endmacro %}\
{% call test() %}data{% endcall %}''')
assert tmpl.render() == '[[data]]'
def test_complex_call(self):
tmpl = self.env.from_string('''\
{% macro test() %}[[{{ caller('data') }}]]{% endmacro %}\
{% call(data) test() %}{{ data }}{% endcall %}''')
assert tmpl.render() == '[[data]]'
def test_caller_undefined(self):
tmpl = self.env.from_string('''\
{% set caller = 42 %}\
{% macro test() %}{{ caller is not defined }}{% endmacro %}\
{{ test() }}''')
assert tmpl.render() == 'True'
def test_include(self):
self.env = Environment(loader=DictLoader({'include':
'{% macro test(foo) %}[{{ foo }}]{% endmacro %}'}))
tmpl = self.env.from_string('{% from "include" import test %}{{ test("foo") }}')
assert tmpl.render() == '[foo]'
def test_macro_api(self):
tmpl = self.env.from_string('{% macro foo(a, b) %}{% endmacro %}'
'{% macro bar() %}{{ varargs }}{{ kwargs }}{% endmacro %}'
'{% macro baz() %}{{ caller() }}{% endmacro %}')
assert tmpl.module.foo.arguments == ('a', 'b')
assert tmpl.module.foo.defaults == ()
assert tmpl.module.foo.name == 'foo'
assert not tmpl.module.foo.caller
assert not tmpl.module.foo.catch_kwargs
assert not tmpl.module.foo.catch_varargs
assert tmpl.module.bar.arguments == ()
assert tmpl.module.bar.defaults == ()
assert not tmpl.module.bar.caller
assert tmpl.module.bar.catch_kwargs
assert tmpl.module.bar.catch_varargs
assert tmpl.module.baz.caller
def test_callself(self):
tmpl = self.env.from_string('{% macro foo(x) %}{{ x }}{% if x > 1 %}|'
'{{ foo(x - 1) }}{% endif %}{% endmacro %}'
'{{ foo(5) }}')
assert tmpl.render() == '5|4|3|2|1'
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(ForLoopTestCase))
suite.addTest(unittest.makeSuite(IfConditionTestCase))
suite.addTest(unittest.makeSuite(MacrosTestCase))
return suite
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