628 lines
20 KiB
Ruby
628 lines
20 KiB
Ruby
#--
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# Copyright (c) 2006 Assaf Arkin (http://labnotes.org)
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# Under MIT and/or CC By license.
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#++
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require 'abstract_unit'
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require 'controller/fake_controllers'
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class SelectorTest < Test::Unit::TestCase
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#
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# Basic selector: element, id, class, attributes.
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#
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def test_element
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parse(%Q{<div id="1"></div><p></p><div id="2"></div>})
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# Match element by name.
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select("div")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "2", @matches[1].attributes["id"]
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# Not case sensitive.
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select("DIV")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "2", @matches[1].attributes["id"]
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# Universal match (all elements).
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select("*")
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assert_equal 3, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal nil, @matches[1].attributes["id"]
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assert_equal "2", @matches[2].attributes["id"]
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end
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def test_identifier
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parse(%Q{<div id="1"></div><p></p><div id="2"></div>})
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# Match element by ID.
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select("div#1")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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# Match element by ID, substitute value.
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select("div#?", 2)
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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# Element name does not match ID.
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select("p#?", 2)
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assert_equal 0, @matches.size
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# Use regular expression.
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select("#?", /\d/)
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assert_equal 2, @matches.size
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end
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def test_class_name
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parse(%Q{<div id="1" class=" foo "></div><p id="2" class=" foo bar "></p><div id="3" class="bar"></div>})
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# Match element with specified class.
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select("div.foo")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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# Match any element with specified class.
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select("*.foo")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "2", @matches[1].attributes["id"]
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# Match elements with other class.
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select("*.bar")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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# Match only element with both class names.
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select("*.bar.foo")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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end
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def test_attribute
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parse(%Q{<div id="1"></div><p id="2" title="" bar="foo"></p><div id="3" title="foo"></div>})
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# Match element with attribute.
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select("div[title]")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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# Match any element with attribute.
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select("*[title]")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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# Match element with attribute value.
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select("*[title=foo]")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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# Match element with attribute and attribute value.
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select("[bar=foo][title]")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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# Not case sensitive.
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select("[BAR=foo][TiTle]")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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end
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def test_attribute_quoted
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parse(%Q{<div id="1" title="foo"></div><div id="2" title="bar"></div><div id="3" title=" bar "></div>})
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# Match without quotes.
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select("[title = bar]")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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# Match with single quotes.
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select("[title = 'bar' ]")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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# Match with double quotes.
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select("[title = \"bar\" ]")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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# Match with spaces.
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select("[title = \" bar \" ]")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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end
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def test_attribute_equality
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parse(%Q{<div id="1" title="foo bar"></div><div id="2" title="barbaz"></div>})
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# Match (fail) complete value.
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select("[title=bar]")
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assert_equal 0, @matches.size
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# Match space-separate word.
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select("[title~=foo]")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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select("[title~=bar]")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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# Match beginning of value.
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select("[title^=ba]")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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# Match end of value.
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select("[title$=ar]")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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# Match text in value.
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select("[title*=bar]")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "2", @matches[1].attributes["id"]
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# Match first space separated word.
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select("[title|=foo]")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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select("[title|=bar]")
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assert_equal 0, @matches.size
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end
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#
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# Selector composition: groups, sibling, children
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#
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def test_selector_group
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parse(%Q{<h1 id="1"></h1><h2 id="2"></h2><h3 id="3"></h3>})
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# Simple group selector.
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select("h1,h3")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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select("h1 , h3")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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# Complex group selector.
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parse(%Q{<h1 id="1"><a href="foo"></a></h1><h2 id="2"><a href="bar"></a></h2><h3 id="2"><a href="baz"></a></h3>})
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select("h1 a, h3 a")
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assert_equal 2, @matches.size
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assert_equal "foo", @matches[0].attributes["href"]
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assert_equal "baz", @matches[1].attributes["href"]
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# And now for the three selector challenge.
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parse(%Q{<h1 id="1"><a href="foo"></a></h1><h2 id="2"><a href="bar"></a></h2><h3 id="2"><a href="baz"></a></h3>})
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select("h1 a, h2 a, h3 a")
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assert_equal 3, @matches.size
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assert_equal "foo", @matches[0].attributes["href"]
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assert_equal "bar", @matches[1].attributes["href"]
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assert_equal "baz", @matches[2].attributes["href"]
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end
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def test_sibling_selector
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parse(%Q{<h1 id="1"></h1><h2 id="2"></h2><h3 id="3"></h3>})
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# Test next sibling.
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select("h1+*")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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select("h1+h2")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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select("h1+h3")
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assert_equal 0, @matches.size
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select("*+h3")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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# Test any sibling.
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select("h1~*")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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select("h2~*")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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end
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def test_children_selector
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parse(%Q{<div><p id="1"><span id="2"></span></p></div><div><p id="3"><span id="4" class="foo"></span></p></div>})
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# Test child selector.
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select("div>p")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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select("div>span")
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assert_equal 0, @matches.size
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select("div>p#3")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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select("div>p>span")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "4", @matches[1].attributes["id"]
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# Test descendant selector.
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select("div p")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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select("div span")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "4", @matches[1].attributes["id"]
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select("div *#3")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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select("div *#4")
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assert_equal 1, @matches.size
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assert_equal "4", @matches[0].attributes["id"]
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# This is here because it failed before when whitespaces
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# were not properly stripped.
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select("div .foo")
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assert_equal 1, @matches.size
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assert_equal "4", @matches[0].attributes["id"]
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end
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#
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# Pseudo selectors: root, nth-child, empty, content, etc
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#
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def test_root_selector
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parse(%Q{<div id="1"><div id="2"></div></div>})
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# Can only find element if it's root.
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select(":root")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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select("#1:root")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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select("#2:root")
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assert_equal 0, @matches.size
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# Opposite for nth-child.
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select("#1:nth-child(1)")
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assert_equal 0, @matches.size
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end
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def test_nth_child_odd_even
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parse(%Q{<table><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# Test odd nth children.
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select("tr:nth-child(odd)")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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# Test even nth children.
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select("tr:nth-child(even)")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "4", @matches[1].attributes["id"]
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end
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def test_nth_child_a_is_zero
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parse(%Q{<table><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# Test the third child.
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select("tr:nth-child(0n+3)")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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# Same but an can be omitted when zero.
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select("tr:nth-child(3)")
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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# Second element (but not every second element).
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select("tr:nth-child(0n+2)")
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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# Before first and past last returns nothing.:
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assert_raises(ArgumentError) { select("tr:nth-child(-1)") }
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select("tr:nth-child(0)")
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assert_equal 0, @matches.size
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select("tr:nth-child(5)")
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assert_equal 0, @matches.size
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end
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def test_nth_child_a_is_one
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parse(%Q{<table><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# a is group of one, pick every element in group.
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select("tr:nth-child(1n+0)")
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assert_equal 4, @matches.size
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# Same but a can be omitted when one.
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select("tr:nth-child(n+0)")
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assert_equal 4, @matches.size
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# Same but b can be omitted when zero.
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select("tr:nth-child(n)")
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assert_equal 4, @matches.size
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end
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def test_nth_child_b_is_zero
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parse(%Q{<table><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# If b is zero, pick the n-th element (here each one).
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select("tr:nth-child(n+0)")
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assert_equal 4, @matches.size
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# If b is zero, pick the n-th element (here every second).
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select("tr:nth-child(2n+0)")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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# If a and b are both zero, no element selected.
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select("tr:nth-child(0n+0)")
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assert_equal 0, @matches.size
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select("tr:nth-child(0)")
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assert_equal 0, @matches.size
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end
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def test_nth_child_a_is_negative
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parse(%Q{<table><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# Since a is -1, picks the first three elements.
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select("tr:nth-child(-n+3)")
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assert_equal 3, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "2", @matches[1].attributes["id"]
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assert_equal "3", @matches[2].attributes["id"]
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# Since a is -2, picks the first in every second of first four elements.
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select("tr:nth-child(-2n+3)")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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# Since a is -2, picks the first in every second of first three elements.
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select("tr:nth-child(-2n+2)")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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end
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def test_nth_child_b_is_negative
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parse(%Q{<table><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# Select last of four.
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select("tr:nth-child(4n-1)")
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assert_equal 1, @matches.size
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assert_equal "4", @matches[0].attributes["id"]
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# Select first of four.
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select("tr:nth-child(4n-4)")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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# Select last of every second.
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select("tr:nth-child(2n-1)")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "4", @matches[1].attributes["id"]
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# Select nothing since an+b always < 0
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select("tr:nth-child(-1n-1)")
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assert_equal 0, @matches.size
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end
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def test_nth_child_substitution_values
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parse(%Q{<table><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# Test with ?n?.
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select("tr:nth-child(?n?)", 2, 1)
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "3", @matches[1].attributes["id"]
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select("tr:nth-child(?n?)", 2, 2)
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "4", @matches[1].attributes["id"]
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select("tr:nth-child(?n?)", 4, 2)
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assert_equal 1, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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# Test with ? (b only).
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select("tr:nth-child(?)", 3)
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assert_equal 1, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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select("tr:nth-child(?)", 5)
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assert_equal 0, @matches.size
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end
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def test_nth_last_child
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parse(%Q{<table><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# Last two elements.
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select("tr:nth-last-child(-n+2)")
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assert_equal 2, @matches.size
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assert_equal "3", @matches[0].attributes["id"]
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assert_equal "4", @matches[1].attributes["id"]
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# All old elements counting from last one.
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select("tr:nth-last-child(odd)")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "4", @matches[1].attributes["id"]
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end
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def test_nth_of_type
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parse(%Q{<table><thead></thead><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# First two elements.
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select("tr:nth-of-type(-n+2)")
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assert_equal 2, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
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assert_equal "2", @matches[1].attributes["id"]
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# All old elements counting from last one.
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select("tr:nth-last-of-type(odd)")
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assert_equal 2, @matches.size
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assert_equal "2", @matches[0].attributes["id"]
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assert_equal "4", @matches[1].attributes["id"]
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end
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def test_first_and_last
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parse(%Q{<table><thead></thead><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
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# First child.
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select("tr:first-child")
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assert_equal 0, @matches.size
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select(":first-child")
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assert_equal 1, @matches.size
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assert_equal "thead", @matches[0].name
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# First of type.
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select("tr:first-of-type")
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assert_equal 1, @matches.size
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assert_equal "1", @matches[0].attributes["id"]
|
|
select("thead:first-of-type")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "thead", @matches[0].name
|
|
select("div:first-of-type")
|
|
assert_equal 0, @matches.size
|
|
# Last child.
|
|
select("tr:last-child")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "4", @matches[0].attributes["id"]
|
|
# Last of type.
|
|
select("tr:last-of-type")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "4", @matches[0].attributes["id"]
|
|
select("thead:last-of-type")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "thead", @matches[0].name
|
|
select("div:last-of-type")
|
|
assert_equal 0, @matches.size
|
|
end
|
|
|
|
|
|
def test_first_and_last
|
|
# Only child.
|
|
parse(%Q{<table><tr></tr></table>})
|
|
select("table:only-child")
|
|
assert_equal 0, @matches.size
|
|
select("tr:only-child")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "tr", @matches[0].name
|
|
parse(%Q{<table><tr></tr><tr></tr></table>})
|
|
select("tr:only-child")
|
|
assert_equal 0, @matches.size
|
|
# Only of type.
|
|
parse(%Q{<table><thead></thead><tr></tr><tr></tr></table>})
|
|
select("thead:only-of-type")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "thead", @matches[0].name
|
|
select("td:only-of-type")
|
|
assert_equal 0, @matches.size
|
|
end
|
|
|
|
|
|
def test_empty
|
|
parse(%Q{<table><tr></tr></table>})
|
|
select("table:empty")
|
|
assert_equal 0, @matches.size
|
|
select("tr:empty")
|
|
assert_equal 1, @matches.size
|
|
parse(%Q{<div> </div>})
|
|
select("div:empty")
|
|
assert_equal 1, @matches.size
|
|
end
|
|
|
|
|
|
def test_content
|
|
parse(%Q{<div> </div>})
|
|
select("div:content()")
|
|
assert_equal 1, @matches.size
|
|
parse(%Q{<div>something </div>})
|
|
select("div:content()")
|
|
assert_equal 0, @matches.size
|
|
select("div:content(something)")
|
|
assert_equal 1, @matches.size
|
|
select("div:content( 'something' )")
|
|
assert_equal 1, @matches.size
|
|
select("div:content( \"something\" )")
|
|
assert_equal 1, @matches.size
|
|
select("div:content(?)", "something")
|
|
assert_equal 1, @matches.size
|
|
select("div:content(?)", /something/)
|
|
assert_equal 1, @matches.size
|
|
end
|
|
|
|
|
|
#
|
|
# Test negation.
|
|
#
|
|
|
|
|
|
def test_element_negation
|
|
parse(%Q{<p></p><div></div>})
|
|
select("*")
|
|
assert_equal 2, @matches.size
|
|
select("*:not(p)")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "div", @matches[0].name
|
|
select("*:not(div)")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "p", @matches[0].name
|
|
select("*:not(span)")
|
|
assert_equal 2, @matches.size
|
|
end
|
|
|
|
|
|
def test_id_negation
|
|
parse(%Q{<p id="1"></p><p id="2"></p>})
|
|
select("p")
|
|
assert_equal 2, @matches.size
|
|
select(":not(#1)")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "2", @matches[0].attributes["id"]
|
|
select(":not(#2)")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "1", @matches[0].attributes["id"]
|
|
end
|
|
|
|
|
|
def test_class_name_negation
|
|
parse(%Q{<p class="foo"></p><p class="bar"></p>})
|
|
select("p")
|
|
assert_equal 2, @matches.size
|
|
select(":not(.foo)")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "bar", @matches[0].attributes["class"]
|
|
select(":not(.bar)")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "foo", @matches[0].attributes["class"]
|
|
end
|
|
|
|
|
|
def test_attribute_negation
|
|
parse(%Q{<p title="foo"></p><p title="bar"></p>})
|
|
select("p")
|
|
assert_equal 2, @matches.size
|
|
select(":not([title=foo])")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "bar", @matches[0].attributes["title"]
|
|
select(":not([title=bar])")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "foo", @matches[0].attributes["title"]
|
|
end
|
|
|
|
|
|
def test_pseudo_class_negation
|
|
parse(%Q{<div><p id="1"></p><p id="2"></p></div>})
|
|
select("p")
|
|
assert_equal 2, @matches.size
|
|
select("p:not(:first-child)")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "2", @matches[0].attributes["id"]
|
|
select("p:not(:nth-child(2))")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "1", @matches[0].attributes["id"]
|
|
end
|
|
|
|
|
|
def test_negation_details
|
|
parse(%Q{<p id="1"></p><p id="2"></p><p id="3"></p>})
|
|
assert_raises(ArgumentError) { select(":not(") }
|
|
assert_raises(ArgumentError) { select(":not(:not())") }
|
|
select("p:not(#1):not(#3)")
|
|
assert_equal 1, @matches.size
|
|
assert_equal "2", @matches[0].attributes["id"]
|
|
end
|
|
|
|
|
|
def test_select_from_element
|
|
parse(%Q{<div><p id="1"></p><p id="2"></p></div>})
|
|
select("div")
|
|
@matches = @matches[0].select("p")
|
|
assert_equal 2, @matches.size
|
|
assert_equal "1", @matches[0].attributes["id"]
|
|
assert_equal "2", @matches[1].attributes["id"]
|
|
end
|
|
|
|
|
|
protected
|
|
|
|
def parse(html)
|
|
@html = HTML::Document.new(html).root
|
|
end
|
|
|
|
def select(*selector)
|
|
@matches = HTML.selector(*selector).select(@html)
|
|
end
|
|
|
|
end
|