| import itertools |
| |
| from jinja2 import Template |
| from jinja2.runtime import LoopContext |
| |
| TEST_IDX_TEMPLATE_STR_1 = ( |
| "[{% for i in lst|reverse %}(len={{ loop.length }}," |
| " revindex={{ loop.revindex }}, index={{ loop.index }}, val={{ i }}){% endfor %}]" |
| ) |
| TEST_IDX0_TEMPLATE_STR_1 = ( |
| "[{% for i in lst|reverse %}(len={{ loop.length }}," |
| " revindex0={{ loop.revindex0 }}, index0={{ loop.index0 }}, val={{ i }})" |
| "{% endfor %}]" |
| ) |
| |
| |
| def test_loop_idx(): |
| t = Template(TEST_IDX_TEMPLATE_STR_1) |
| lst = [10] |
| excepted_render = "[(len=1, revindex=1, index=1, val=10)]" |
| assert excepted_render == t.render(lst=lst) |
| |
| |
| def test_loop_idx0(): |
| t = Template(TEST_IDX0_TEMPLATE_STR_1) |
| lst = [10] |
| excepted_render = "[(len=1, revindex0=0, index0=0, val=10)]" |
| assert excepted_render == t.render(lst=lst) |
| |
| |
| def test_loopcontext0(): |
| in_lst = [] |
| lc = LoopContext(reversed(in_lst), None) |
| assert lc.length == len(in_lst) |
| |
| |
| def test_loopcontext1(): |
| in_lst = [10] |
| lc = LoopContext(reversed(in_lst), None) |
| assert lc.length == len(in_lst) |
| |
| |
| def test_loopcontext2(): |
| in_lst = [10, 11] |
| lc = LoopContext(reversed(in_lst), None) |
| assert lc.length == len(in_lst) |
| |
| |
| def test_iterator_not_advanced_early(): |
| t = Template("{% for _, g in gs %}{{ loop.index }} {{ g|list }}\n{% endfor %}") |
| out = t.render( |
| gs=itertools.groupby([(1, "a"), (1, "b"), (2, "c"), (3, "d")], lambda x: x[0]) |
| ) |
| # groupby groups depend on the current position of the iterator. If |
| # it was advanced early, the lists would appear empty. |
| assert out == "1 [(1, 'a'), (1, 'b')]\n2 [(2, 'c')]\n3 [(3, 'd')]\n" |
| |
| |
| def test_mock_not_contextfunction(): |
| """If a callable class has a ``__getattr__`` that returns True-like |
| values for arbitrary attrs, it should not be incorrectly identified |
| as a ``contextfunction``. |
| """ |
| |
| class Calc: |
| def __getattr__(self, item): |
| return object() |
| |
| def __call__(self, *args, **kwargs): |
| return len(args) + len(kwargs) |
| |
| t = Template("{{ calc() }}") |
| out = t.render(calc=Calc()) |
| # Would be "1" if context argument was passed. |
| assert out == "0" |