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require 'action_controller/vendor/html-scanner'
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# Pair of assertions to testing elements in the HTML output of the response.
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# Asserts that there is a tag/node/element in the body of the response
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# that meets all of the given conditions. The +conditions+ parameter must
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# be a hash of any of the following keys (all are optional):
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# * <tt>:tag</tt>: the node type must match the corresponding value
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# * <tt>:attributes</tt>: a hash. The node's attributes must match the
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# corresponding values in the hash.
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# * <tt>:parent</tt>: a hash. The node's parent must match the
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# * <tt>:child</tt>: a hash. At least one of the node's immediate children
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# must meet the criteria described by the hash.
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# * <tt>:ancestor</tt>: a hash. At least one of the node's ancestors must
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# meet the criteria described by the hash.
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# * <tt>:descendant</tt>: a hash. At least one of the node's descendants
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# must meet the criteria described by the hash.
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# * <tt>:sibling</tt>: a hash. At least one of the node's siblings must
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# meet the criteria described by the hash.
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# * <tt>:after</tt>: a hash. The node must be after any sibling meeting
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# the criteria described by the hash, and at least one sibling must match.
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# * <tt>:before</tt>: a hash. The node must be before any sibling meeting
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# the criteria described by the hash, and at least one sibling must match.
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# * <tt>:children</tt>: a hash, for counting children of a node. Accepts
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# * <tt>:count</tt>: either a number or a range which must equal (or
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# include) the number of children that match.
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# * <tt>:less_than</tt>: the number of matching children must be less
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# * <tt>:greater_than</tt>: the number of matching children must be
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# greater than this number.
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# * <tt>:only</tt>: another hash consisting of the keys to use
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# to match on the children, and only matching children will be
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# * <tt>:content</tt>: the textual content of the node must match the
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# given value. This will not match HTML tags in the body of a
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# Conditions are matched using the following algorithm:
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# * if the condition is a string, it must be a substring of the value.
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# * if the condition is a regexp, it must match the value.
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# * if the condition is a number, the value must match number.to_s.
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# * if the condition is +true+, the value must not be +nil+.
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# * if the condition is +false+ or +nil+, the value must be +nil+.
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# # Assert that there is a "span" tag
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# assert_tag :tag => "span"
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# # Assert that there is a "span" tag with id="x"
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# assert_tag :tag => "span", :attributes => { :id => "x" }
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# # Assert that there is a "span" tag using the short-hand
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# # Assert that there is a "span" tag with id="x" using the short-hand
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# assert_tag :span, :attributes => { :id => "x" }
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# # Assert that there is a "span" inside of a "div"
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# assert_tag :tag => "span", :parent => { :tag => "div" }
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# # Assert that there is a "span" somewhere inside a table
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# assert_tag :tag => "span", :ancestor => { :tag => "table" }
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# # Assert that there is a "span" with at least one "em" child
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# assert_tag :tag => "span", :child => { :tag => "em" }
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# # Assert that there is a "span" containing a (possibly nested)
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# assert_tag :tag => "span", :descendant => { :tag => "strong" }
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# # Assert that there is a "span" containing between 2 and 4 "em" tags
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# # as immediate children
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# assert_tag :tag => "span",
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# :children => { :count => 2..4, :only => { :tag => "em" } }
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# # Get funky: assert that there is a "div", with an "ul" ancestor
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# # and an "li" parent (with "class" = "enum"), and containing a
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# # "span" descendant that contains text matching /hello world/
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# assert_tag :tag => "div",
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# :ancestor => { :tag => "ul" },
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# :parent => { :tag => "li",
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# :attributes => { :class => "enum" } },
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# :descendant => { :tag => "span",
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# :child => /hello world/ }
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# <b>Please note</b>: +assert_tag+ and +assert_no_tag+ only work
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# with well-formed XHTML. They recognize a few tags as implicitly self-closing
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# (like br and hr and such) but will not work correctly with tags
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# that allow optional closing tags (p, li, td). <em>You must explicitly
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# close all of your tags to use these assertions.</em>
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opts = opts.size > 1 ? opts.last.merge({ :tag => opts.first.to_s }) : opts.first
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assert tag, "expected tag, but no tag found matching #{opts.inspect} in:\n#{@response.body.inspect}"
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# Identical to +assert_tag+, but asserts that a matching tag does _not_
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# exist. (See +assert_tag+ for a full discussion of the syntax.)
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# # Assert that there is not a "div" containing a "p"
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# assert_no_tag :tag => "div", :descendant => { :tag => "p" }
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# # Assert that an unordered list is empty
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# assert_no_tag :tag => "ul", :descendant => { :tag => "li" }
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# # Assert that there is not a "p" tag with between 1 to 3 "img" tags
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# # as immediate children
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# assert_no_tag :tag => "p",
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# :children => { :count => 1..3, :only => { :tag => "img" } }
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def assert_no_tag(*opts)
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opts = opts.size > 1 ? opts.last.merge({ :tag => opts.first.to_s }) : opts.first
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assert !tag, "expected no tag, but found tag matching #{opts.inspect} in:\n#{@response.body.inspect}"
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def find_tag(conditions)
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html_document.find(conditions)
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def find_all_tag(conditions)
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html_document.find_all(conditions)
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xml = @response.content_type =~ /xml$/
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@html_document ||= HTML::Document.new(@response.body, false, xml)
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lib/action_dispatch/testing/assertions/tag.rb
