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| import pytest | |
| from bs4.element import Tag | |
| from bs4.formatter import ( | |
| Formatter, | |
| HTMLFormatter, | |
| XMLFormatter, | |
| ) | |
| from . import SoupTest | |
| class TestFormatter(SoupTest): | |
| def test_default_attributes(self): | |
| # Test the default behavior of Formatter.attributes(). | |
| formatter = Formatter() | |
| tag = Tag(name="tag") | |
| tag['b'] = 1 | |
| tag['a'] = 2 | |
| # Attributes come out sorted by name. In Python 3, attributes | |
| # normally come out of a dictionary in the order they were | |
| # added. | |
| assert [('a', 2), ('b', 1)] == formatter.attributes(tag) | |
| # This works even if Tag.attrs is None, though this shouldn't | |
| # normally happen. | |
| tag.attrs = None | |
| assert [] == formatter.attributes(tag) | |
| assert ' ' == formatter.indent | |
| def test_sort_attributes(self): | |
| # Test the ability to override Formatter.attributes() to, | |
| # e.g., disable the normal sorting of attributes. | |
| class UnsortedFormatter(Formatter): | |
| def attributes(self, tag): | |
| self.called_with = tag | |
| for k, v in sorted(tag.attrs.items()): | |
| if k == 'ignore': | |
| continue | |
| yield k,v | |
| soup = self.soup('<p cval="1" aval="2" ignore="ignored"></p>') | |
| formatter = UnsortedFormatter() | |
| decoded = soup.decode(formatter=formatter) | |
| # attributes() was called on the <p> tag. It filtered out one | |
| # attribute and sorted the other two. | |
| assert formatter.called_with == soup.p | |
| assert '<p aval="2" cval="1"></p>' == decoded | |
| def test_empty_attributes_are_booleans(self): | |
| # Test the behavior of empty_attributes_are_booleans as well | |
| # as which Formatters have it enabled. | |
| for name in ('html', 'minimal', None): | |
| formatter = HTMLFormatter.REGISTRY[name] | |
| assert False == formatter.empty_attributes_are_booleans | |
| formatter = XMLFormatter.REGISTRY[None] | |
| assert False == formatter.empty_attributes_are_booleans | |
| formatter = HTMLFormatter.REGISTRY['html5'] | |
| assert True == formatter.empty_attributes_are_booleans | |
| # Verify that the constructor sets the value. | |
| formatter = Formatter(empty_attributes_are_booleans=True) | |
| assert True == formatter.empty_attributes_are_booleans | |
| # Now demonstrate what it does to markup. | |
| for markup in ( | |
| "<option selected></option>", | |
| '<option selected=""></option>' | |
| ): | |
| soup = self.soup(markup) | |
| for formatter in ('html', 'minimal', 'xml', None): | |
| assert b'<option selected=""></option>' == soup.option.encode(formatter='html') | |
| assert b'<option selected></option>' == soup.option.encode(formatter='html5') | |
| def test_indent(self, indent, expect): | |
| # Pretty-print a tree with a Formatter set to | |
| # indent in a certain way and verify the results. | |
| soup = self.soup("<a><b>text</b></a>") | |
| formatter = Formatter(indent=indent) | |
| assert soup.prettify(formatter=formatter) == expect | |
| # Pretty-printing only happens with prettify(), not | |
| # encode(). | |
| assert soup.encode(formatter=formatter) != expect | |
| def test_default_indent_value(self): | |
| formatter = Formatter() | |
| assert formatter.indent == ' ' | |