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import pytest
from django.template import TemplateSyntaxError
from . import imagegenerators # noqa
from .utils import clear_imagekit_cache, get_html_attrs, render_tag
def test_img_tag():
ttag = r"""{% generateimage 'testspec' source=img %}"""
clear_imagekit_cache()
attrs = get_html_attrs(ttag)
expected_attrs = {'src', 'width', 'height'}
assert set(attrs.keys()) == expected_attrs
for k in expected_attrs:
assert attrs[k].strip() != ''
def test_img_tag_attrs():
ttag = r"""{% generateimage 'testspec' source=img -- alt="Hello" %}"""
clear_imagekit_cache()
attrs = get_html_attrs(ttag)
assert attrs.get('alt') == 'Hello'
def test_dangling_html_attrs_delimiter():
ttag = r"""{% generateimage 'testspec' source=img -- %}"""
with pytest.raises(TemplateSyntaxError):
render_tag(ttag)
def test_html_attrs_assignment():
"""
You can either use generateimage as an assignment tag or specify html attrs,
but not both.
"""
ttag = r"""{% generateimage 'testspec' source=img -- alt="Hello" as th %}"""
with pytest.raises(TemplateSyntaxError):
render_tag(ttag)
def test_single_dimension_attr():
"""
If you only provide one of width or height, the other should not be added.
"""
ttag = r"""{% generateimage 'testspec' source=img -- width="50" %}"""
clear_imagekit_cache()
attrs = get_html_attrs(ttag)
assert 'height' not in attrs
def test_assignment_tag():
ttag = r"""{% generateimage 'testspec' source=img as th %}{{ th.url }}{{ th.height }}{{ th.width }}"""
clear_imagekit_cache()
html = render_tag(ttag)
assert html.strip() != ''
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