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from django.template import TemplateSyntaxError
from nose.tools import eq_, assert_false, raises, assert_not_equal
from . import imagegenerators # noqa
from .utils import render_tag, get_html_attrs, clear_imagekit_cache
def test_img_tag():
ttag = r"""{% generateimage 'testspec' source=img %}"""
clear_imagekit_cache()
attrs = get_html_attrs(ttag)
expected_attrs = set(['src', 'width', 'height'])
eq_(set(attrs.keys()), expected_attrs)
for k in expected_attrs:
assert_not_equal(attrs[k].strip(), '')
def test_img_tag_attrs():
ttag = r"""{% generateimage 'testspec' source=img -- alt="Hello" %}"""
clear_imagekit_cache()
attrs = get_html_attrs(ttag)
eq_(attrs.get('alt'), 'Hello')
@raises(TemplateSyntaxError)
def test_dangling_html_attrs_delimiter():
ttag = r"""{% generateimage 'testspec' source=img -- %}"""
render_tag(ttag)
@raises(TemplateSyntaxError)
def test_html_attrs_assignment():
"""
You can either use generateimage as an assigment tag or specify html attrs,
but not both.
"""
ttag = r"""{% generateimage 'testspec' source=img -- alt="Hello" as th %}"""
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_false('height' 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_not_equal(html.strip(), '')
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