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| import pytest | |
| import types | |
| from unittest.mock import MagicMock | |
| from bs4 import ( | |
| CSS, | |
| BeautifulSoup, | |
| ResultSet, | |
| ) | |
| from . import ( | |
| SoupTest, | |
| SOUP_SIEVE_PRESENT, | |
| ) | |
| if SOUP_SIEVE_PRESENT: | |
| from soupsieve import SelectorSyntaxError | |
| class TestCSSSelectors(SoupTest): | |
| """Test basic CSS selector functionality. | |
| This functionality is implemented in soupsieve, which has a much | |
| more comprehensive test suite, so this is basically an extra check | |
| that soupsieve works as expected. | |
| """ | |
| HTML = """ | |
| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" | |
| "http://www.w3.org/TR/html4/strict.dtd"> | |
| <html> | |
| <head> | |
| <title>The title</title> | |
| <link rel="stylesheet" href="blah.css" type="text/css" id="l1"> | |
| </head> | |
| <body> | |
| <custom-dashed-tag class="dashed" id="dash1">Hello there.</custom-dashed-tag> | |
| <div id="main" class="fancy"> | |
| <div id="inner"> | |
| <h1 id="header1">An H1</h1> | |
| <p>Some text</p> | |
| <p class="onep" id="p1">Some more text</p> | |
| <h2 id="header2">An H2</h2> | |
| <p class="class1 class2 class3" id="pmulti">Another</p> | |
| <a href="http://bob.example.org/" rel="friend met" id="bob">Bob</a> | |
| <h2 id="header3">Another H2</h2> | |
| <a id="me" href="http://simonwillison.net/" rel="me">me</a> | |
| <span class="s1"> | |
| <a href="#" id="s1a1">span1a1</a> | |
| <a href="#" id="s1a2">span1a2 <span id="s1a2s1">test</span></a> | |
| <span class="span2"> | |
| <a href="#" id="s2a1">span2a1</a> | |
| </span> | |
| <span class="span3"></span> | |
| <custom-dashed-tag class="dashed" id="dash2"/> | |
| <div data-tag="dashedvalue" id="data1"/> | |
| </span> | |
| </div> | |
| <x id="xid"> | |
| <z id="zida"/> | |
| <z id="zidab"/> | |
| <z id="zidac"/> | |
| </x> | |
| <y id="yid"> | |
| <z id="zidb"/> | |
| </y> | |
| <p lang="en" id="lang-en">English</p> | |
| <p lang="en-gb" id="lang-en-gb">English UK</p> | |
| <p lang="en-us" id="lang-en-us">English US</p> | |
| <p lang="fr" id="lang-fr">French</p> | |
| </div> | |
| <div id="footer"> | |
| </div> | |
| """ | |
| def setup_method(self): | |
| self.soup = BeautifulSoup(self.HTML, 'html.parser') | |
| def assert_selects(self, selector, expected_ids, **kwargs): | |
| results = self.soup.select(selector, **kwargs) | |
| assert isinstance(results, ResultSet) | |
| el_ids = [el['id'] for el in results] | |
| el_ids.sort() | |
| expected_ids.sort() | |
| assert expected_ids == el_ids, "Selector %s, expected [%s], got [%s]" % ( | |
| selector, ', '.join(expected_ids), ', '.join(el_ids) | |
| ) | |
| assertSelect = assert_selects | |
| def assert_select_multiple(self, *tests): | |
| for selector, expected_ids in tests: | |
| self.assert_selects(selector, expected_ids) | |
| def test_precompiled(self): | |
| sel = self.soup.css.compile('div') | |
| els = self.soup.select(sel) | |
| assert len(els) == 4 | |
| for div in els: | |
| assert div.name == 'div' | |
| el = self.soup.select_one(sel) | |
| assert 'main' == el['id'] | |
| def test_one_tag_one(self): | |
| els = self.soup.select('title') | |
| assert len(els) == 1 | |
| assert els[0].name == 'title' | |
| assert els[0].contents == ['The title'] | |
| def test_one_tag_many(self): | |
| els = self.soup.select('div') | |
| assert len(els) == 4 | |
| for div in els: | |
| assert div.name == 'div' | |
| el = self.soup.select_one('div') | |
| assert 'main' == el['id'] | |
| def test_select_one_returns_none_if_no_match(self): | |
| match = self.soup.select_one('nonexistenttag') | |
| assert None == match | |
| def test_tag_in_tag_one(self): | |
| els = self.soup.select('div div') | |
| self.assert_selects('div div', ['inner', 'data1']) | |
| def test_tag_in_tag_many(self): | |
| for selector in ('html div', 'html body div', 'body div'): | |
| self.assert_selects(selector, ['data1', 'main', 'inner', 'footer']) | |
| def test_limit(self): | |
| self.assert_selects('html div', ['main'], limit=1) | |
| self.assert_selects('html body div', ['inner', 'main'], limit=2) | |
| self.assert_selects('body div', ['data1', 'main', 'inner', 'footer'], | |
| limit=10) | |
| def test_tag_no_match(self): | |
| assert len(self.soup.select('del')) == 0 | |
| def test_invalid_tag(self): | |
| with pytest.raises(SelectorSyntaxError): | |
| self.soup.select('tag%t') | |
| def test_select_dashed_tag_ids(self): | |
| self.assert_selects('custom-dashed-tag', ['dash1', 'dash2']) | |
| def test_select_dashed_by_id(self): | |
| dashed = self.soup.select('custom-dashed-tag[id=\"dash2\"]') | |
| assert dashed[0].name == 'custom-dashed-tag' | |
| assert dashed[0]['id'] == 'dash2' | |
| def test_dashed_tag_text(self): | |
| assert self.soup.select('body > custom-dashed-tag')[0].text == 'Hello there.' | |
| def test_select_dashed_matches_find_all(self): | |
| assert self.soup.select('custom-dashed-tag') == self.soup.find_all('custom-dashed-tag') | |
| def test_header_tags(self): | |
| self.assert_select_multiple( | |
| ('h1', ['header1']), | |
| ('h2', ['header2', 'header3']), | |
| ) | |
| def test_class_one(self): | |
| for selector in ('.onep', 'p.onep', 'html p.onep'): | |
| els = self.soup.select(selector) | |
| assert len(els) == 1 | |
| assert els[0].name == 'p' | |
| assert els[0]['class'] == ['onep'] | |
| def test_class_mismatched_tag(self): | |
| els = self.soup.select('div.onep') | |
| assert len(els) == 0 | |
| def test_one_id(self): | |
| for selector in ('div#inner', '#inner', 'div div#inner'): | |
| self.assert_selects(selector, ['inner']) | |
| def test_bad_id(self): | |
| els = self.soup.select('#doesnotexist') | |
| assert len(els) == 0 | |
| def test_items_in_id(self): | |
| els = self.soup.select('div#inner p') | |
| assert len(els) == 3 | |
| for el in els: | |
| assert el.name == 'p' | |
| assert els[1]['class'] == ['onep'] | |
| assert not els[0].has_attr('class') | |
| def test_a_bunch_of_emptys(self): | |
| for selector in ('div#main del', 'div#main div.oops', 'div div#main'): | |
| assert len(self.soup.select(selector)) == 0 | |
| def test_multi_class_support(self): | |
| for selector in ('.class1', 'p.class1', '.class2', 'p.class2', | |
| '.class3', 'p.class3', 'html p.class2', 'div#inner .class2'): | |
| self.assert_selects(selector, ['pmulti']) | |
| def test_multi_class_selection(self): | |
| for selector in ('.class1.class3', '.class3.class2', | |
| '.class1.class2.class3'): | |
| self.assert_selects(selector, ['pmulti']) | |
| def test_child_selector(self): | |
| self.assert_selects('.s1 > a', ['s1a1', 's1a2']) | |
| self.assert_selects('.s1 > a span', ['s1a2s1']) | |
| def test_child_selector_id(self): | |
| self.assert_selects('.s1 > a#s1a2 span', ['s1a2s1']) | |
| def test_attribute_equals(self): | |
| self.assert_select_multiple( | |
| ('p[class="onep"]', ['p1']), | |
| ('p[id="p1"]', ['p1']), | |
| ('[class="onep"]', ['p1']), | |
| ('[id="p1"]', ['p1']), | |
| ('link[rel="stylesheet"]', ['l1']), | |
| ('link[type="text/css"]', ['l1']), | |
| ('link[href="blah.css"]', ['l1']), | |
| ('link[href="no-blah.css"]', []), | |
| ('[rel="stylesheet"]', ['l1']), | |
| ('[type="text/css"]', ['l1']), | |
| ('[href="blah.css"]', ['l1']), | |
| ('[href="no-blah.css"]', []), | |
| ('p[href="no-blah.css"]', []), | |
| ('[href="no-blah.css"]', []), | |
| ) | |
| def test_attribute_tilde(self): | |
| self.assert_select_multiple( | |
| ('p[class~="class1"]', ['pmulti']), | |
| ('p[class~="class2"]', ['pmulti']), | |
| ('p[class~="class3"]', ['pmulti']), | |
| ('[class~="class1"]', ['pmulti']), | |
| ('[class~="class2"]', ['pmulti']), | |
| ('[class~="class3"]', ['pmulti']), | |
| ('a[rel~="friend"]', ['bob']), | |
| ('a[rel~="met"]', ['bob']), | |
| ('[rel~="friend"]', ['bob']), | |
| ('[rel~="met"]', ['bob']), | |
| ) | |
| def test_attribute_startswith(self): | |
| self.assert_select_multiple( | |
| ('[rel^="style"]', ['l1']), | |
| ('link[rel^="style"]', ['l1']), | |
| ('notlink[rel^="notstyle"]', []), | |
| ('[rel^="notstyle"]', []), | |
| ('link[rel^="notstyle"]', []), | |
| ('link[href^="bla"]', ['l1']), | |
| ('a[href^="http://"]', ['bob', 'me']), | |
| ('[href^="http://"]', ['bob', 'me']), | |
| ('[id^="p"]', ['pmulti', 'p1']), | |
| ('[id^="m"]', ['me', 'main']), | |
| ('div[id^="m"]', ['main']), | |
| ('a[id^="m"]', ['me']), | |
| ('div[data-tag^="dashed"]', ['data1']) | |
| ) | |
| def test_attribute_endswith(self): | |
| self.assert_select_multiple( | |
| ('[href$=".css"]', ['l1']), | |
| ('link[href$=".css"]', ['l1']), | |
| ('link[id$="1"]', ['l1']), | |
| ('[id$="1"]', ['data1', 'l1', 'p1', 'header1', 's1a1', 's2a1', 's1a2s1', 'dash1']), | |
| ('div[id$="1"]', ['data1']), | |
| ('[id$="noending"]', []), | |
| ) | |
| def test_attribute_contains(self): | |
| self.assert_select_multiple( | |
| # From test_attribute_startswith | |
| ('[rel*="style"]', ['l1']), | |
| ('link[rel*="style"]', ['l1']), | |
| ('notlink[rel*="notstyle"]', []), | |
| ('[rel*="notstyle"]', []), | |
| ('link[rel*="notstyle"]', []), | |
| ('link[href*="bla"]', ['l1']), | |
| ('[href*="http://"]', ['bob', 'me']), | |
| ('[id*="p"]', ['pmulti', 'p1']), | |
| ('div[id*="m"]', ['main']), | |
| ('a[id*="m"]', ['me']), | |
| # From test_attribute_endswith | |
| ('[href*=".css"]', ['l1']), | |
| ('link[href*=".css"]', ['l1']), | |
| ('link[id*="1"]', ['l1']), | |
| ('[id*="1"]', ['data1', 'l1', 'p1', 'header1', 's1a1', 's1a2', 's2a1', 's1a2s1', 'dash1']), | |
| ('div[id*="1"]', ['data1']), | |
| ('[id*="noending"]', []), | |
| # New for this test | |
| ('[href*="."]', ['bob', 'me', 'l1']), | |
| ('a[href*="."]', ['bob', 'me']), | |
| ('link[href*="."]', ['l1']), | |
| ('div[id*="n"]', ['main', 'inner']), | |
| ('div[id*="nn"]', ['inner']), | |
| ('div[data-tag*="edval"]', ['data1']) | |
| ) | |
| def test_attribute_exact_or_hypen(self): | |
| self.assert_select_multiple( | |
| ('p[lang|="en"]', ['lang-en', 'lang-en-gb', 'lang-en-us']), | |
| ('[lang|="en"]', ['lang-en', 'lang-en-gb', 'lang-en-us']), | |
| ('p[lang|="fr"]', ['lang-fr']), | |
| ('p[lang|="gb"]', []), | |
| ) | |
| def test_attribute_exists(self): | |
| self.assert_select_multiple( | |
| ('[rel]', ['l1', 'bob', 'me']), | |
| ('link[rel]', ['l1']), | |
| ('a[rel]', ['bob', 'me']), | |
| ('[lang]', ['lang-en', 'lang-en-gb', 'lang-en-us', 'lang-fr']), | |
| ('p[class]', ['p1', 'pmulti']), | |
| ('[blah]', []), | |
| ('p[blah]', []), | |
| ('div[data-tag]', ['data1']) | |
| ) | |
| def test_quoted_space_in_selector_name(self): | |
| html = """<div style="display: wrong">nope</div> | |
| <div style="display: right">yes</div> | |
| """ | |
| soup = BeautifulSoup(html, 'html.parser') | |
| [chosen] = soup.select('div[style="display: right"]') | |
| assert "yes" == chosen.string | |
| def test_unsupported_pseudoclass(self): | |
| with pytest.raises(NotImplementedError): | |
| self.soup.select("a:no-such-pseudoclass") | |
| with pytest.raises(SelectorSyntaxError): | |
| self.soup.select("a:nth-of-type(a)") | |
| def test_nth_of_type(self): | |
| # Try to select first paragraph | |
| els = self.soup.select('div#inner p:nth-of-type(1)') | |
| assert len(els) == 1 | |
| assert els[0].string == 'Some text' | |
| # Try to select third paragraph | |
| els = self.soup.select('div#inner p:nth-of-type(3)') | |
| assert len(els) == 1 | |
| assert els[0].string == 'Another' | |
| # Try to select (non-existent!) fourth paragraph | |
| els = self.soup.select('div#inner p:nth-of-type(4)') | |
| assert len(els) == 0 | |
| # Zero will select no tags. | |
| els = self.soup.select('div p:nth-of-type(0)') | |
| assert len(els) == 0 | |
| def test_nth_of_type_direct_descendant(self): | |
| els = self.soup.select('div#inner > p:nth-of-type(1)') | |
| assert len(els) == 1 | |
| assert els[0].string == 'Some text' | |
| def test_id_child_selector_nth_of_type(self): | |
| self.assert_selects('#inner > p:nth-of-type(2)', ['p1']) | |
| def test_select_on_element(self): | |
| # Other tests operate on the tree; this operates on an element | |
| # within the tree. | |
| inner = self.soup.find("div", id="main") | |
| selected = inner.select("div") | |
| # The <div id="inner"> tag was selected. The <div id="footer"> | |
| # tag was not. | |
| self.assert_selects_ids(selected, ['inner', 'data1']) | |
| def test_overspecified_child_id(self): | |
| self.assert_selects(".fancy #inner", ['inner']) | |
| self.assert_selects(".normal #inner", []) | |
| def test_adjacent_sibling_selector(self): | |
| self.assert_selects('#p1 + h2', ['header2']) | |
| self.assert_selects('#p1 + h2 + p', ['pmulti']) | |
| self.assert_selects('#p1 + #header2 + .class1', ['pmulti']) | |
| assert [] == self.soup.select('#p1 + p') | |
| def test_general_sibling_selector(self): | |
| self.assert_selects('#p1 ~ h2', ['header2', 'header3']) | |
| self.assert_selects('#p1 ~ #header2', ['header2']) | |
| self.assert_selects('#p1 ~ h2 + a', ['me']) | |
| self.assert_selects('#p1 ~ h2 + [rel="me"]', ['me']) | |
| assert [] == self.soup.select('#inner ~ h2') | |
| def test_dangling_combinator(self): | |
| with pytest.raises(SelectorSyntaxError): | |
| self.soup.select('h1 >') | |
| def test_sibling_combinator_wont_select_same_tag_twice(self): | |
| self.assert_selects('p[lang] ~ p', ['lang-en-gb', 'lang-en-us', 'lang-fr']) | |
| # Test the selector grouping operator (the comma) | |
| def test_multiple_select(self): | |
| self.assert_selects('x, y', ['xid', 'yid']) | |
| def test_multiple_select_with_no_space(self): | |
| self.assert_selects('x,y', ['xid', 'yid']) | |
| def test_multiple_select_with_more_space(self): | |
| self.assert_selects('x, y', ['xid', 'yid']) | |
| def test_multiple_select_duplicated(self): | |
| self.assert_selects('x, x', ['xid']) | |
| def test_multiple_select_sibling(self): | |
| self.assert_selects('x, y ~ p[lang=fr]', ['xid', 'lang-fr']) | |
| def test_multiple_select_tag_and_direct_descendant(self): | |
| self.assert_selects('x, y > z', ['xid', 'zidb']) | |
| def test_multiple_select_direct_descendant_and_tags(self): | |
| self.assert_selects('div > x, y, z', ['xid', 'yid', 'zida', 'zidb', 'zidab', 'zidac']) | |
| def test_multiple_select_indirect_descendant(self): | |
| self.assert_selects('div x,y, z', ['xid', 'yid', 'zida', 'zidb', 'zidab', 'zidac']) | |
| def test_invalid_multiple_select(self): | |
| with pytest.raises(SelectorSyntaxError): | |
| self.soup.select(',x, y') | |
| with pytest.raises(SelectorSyntaxError): | |
| self.soup.select('x,,y') | |
| def test_multiple_select_attrs(self): | |
| self.assert_selects('p[lang=en], p[lang=en-gb]', ['lang-en', 'lang-en-gb']) | |
| def test_multiple_select_ids(self): | |
| self.assert_selects('x, y > z[id=zida], z[id=zidab], z[id=zidb]', ['xid', 'zidb', 'zidab']) | |
| def test_multiple_select_nested(self): | |
| self.assert_selects('body > div > x, y > z', ['xid', 'zidb']) | |
| def test_select_duplicate_elements(self): | |
| # When markup contains duplicate elements, a multiple select | |
| # will find all of them. | |
| markup = '<div class="c1"/><div class="c2"/><div class="c1"/>' | |
| soup = BeautifulSoup(markup, 'html.parser') | |
| selected = soup.select(".c1, .c2") | |
| assert 3 == len(selected) | |
| # Verify that find_all finds the same elements, though because | |
| # of an implementation detail it finds them in a different | |
| # order. | |
| for element in soup.find_all(class_=['c1', 'c2']): | |
| assert element in selected | |
| def test_closest(self): | |
| inner = self.soup.find("div", id="inner") | |
| closest = inner.css.closest("div[id=main]") | |
| assert closest == self.soup.find("div", id="main") | |
| def test_match(self): | |
| inner = self.soup.find("div", id="inner") | |
| main = self.soup.find("div", id="main") | |
| assert inner.css.match("div[id=main]") == False | |
| assert main.css.match("div[id=main]") == True | |
| def test_iselect(self): | |
| gen = self.soup.css.iselect("h2") | |
| assert isinstance(gen, types.GeneratorType) | |
| [header2, header3] = gen | |
| assert header2['id'] == 'header2' | |
| assert header3['id'] == 'header3' | |
| def test_filter(self): | |
| inner = self.soup.find("div", id="inner") | |
| results = inner.css.filter("h2") | |
| assert len(inner.css.filter("h2")) == 2 | |
| results = inner.css.filter("h2[id=header3]") | |
| assert isinstance(results, ResultSet) | |
| [result] = results | |
| assert result['id'] == 'header3' | |
| def test_escape(self): | |
| m = self.soup.css.escape | |
| assert m(".foo#bar") == '\\.foo\\#bar' | |
| assert m("()[]{}") == '\\(\\)\\[\\]\\{\\}' | |
| assert m(".foo") == self.soup.css.escape(".foo") | |