/
finders.rb
322 lines (303 loc) · 16.8 KB
/
finders.rb
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# frozen_string_literal: true
module Capybara
module Node
module Finders
##
#
# Find an {Capybara::Node::Element} based on the given arguments. {#find} will raise an error if the element
# is not found.
#
# page.find('#foo').find('.bar')
# page.find(:xpath, './/div[contains(., "bar")]')
# page.find('li', text: 'Quox').click_link('Delete')
#
# @param (see #all)
#
# @macro waiting_behavior
#
# @!macro system_filters
# @option options [String, Regexp] text Only find elements which contain this text or match this regexp
# @option options [String, Boolean] exact_text
# When String the elements contained text must match exactly, when Boolean controls whether the `text` option must match exactly.
# Defaults to {Capybara.configure exact_text}.
# @option options [Boolean] normalize_ws
# Whether the `text`/`exact_text` options are compared against elment text with whitespace normalized or as returned by the driver.
# Defaults to {Capybara.configure default_normalize_ws}.
# @option options [Boolean, Symbol] visible Only find elements with the specified visibility:
# * true - only finds visible elements.
# * false - finds invisible _and_ visible elements.
# * :all - same as false; finds visible and invisible elements.
# * :hidden - only finds invisible elements.
# * :visible - same as true; only finds visible elements.
# @option options [Boolean] obscured Only find elements with the specified obscured state:
# * true - only find elements whose centerpoint is not in the viewport or is obscured by another non-descendant element.
# * false - only find elements whose centerpoint is in the viewport and is not obscured by other non-descendant elements.
# @option options [String, Regexp] id Only find elements with an id that matches the value passed
# @option options [String, Array<String>, Regexp] class Only find elements with matching class/classes.
# * Absence of a class can be checked by prefixing the class name with `!`
# * If you need to check for existence of a class name that starts with `!` then prefix with `!!`
#
# class:['a', '!b', '!!!c'] # limit to elements with class 'a' and '!c' but not class 'b'
#
# @option options [String, Regexp, Hash] style Only find elements with matching style. String and Regexp will be checked against text of the elements `style` attribute, while a Hash will be compared against the elements full style
# @option options [Boolean] exact Control whether `is` expressions in the given XPath match exactly or partially. Defaults to {Capybara.configure exact}.
# @option options [Symbol] match The matching strategy to use. Defaults to {Capybara.configure match}.
#
# @return [Capybara::Node::Element] The found element
# @raise [Capybara::ElementNotFound] If the element can't be found before time expires
#
def find(*args, **options, &optional_filter_block)
options[:session_options] = session_options
synced_resolve Capybara::Queries::SelectorQuery.new(*args, options, &optional_filter_block)
end
##
#
# Find an {Capybara::Node::Element} based on the given arguments that is also an ancestor of the element called on.
# {#ancestor} will raise an error if the element is not found.
#
# {#ancestor} takes the same options as {#find}.
#
# element.ancestor('#foo').find('.bar')
# element.ancestor(:xpath, './/div[contains(., "bar")]')
# element.ancestor('ul', text: 'Quox').click_link('Delete')
#
# @param (see #find)
#
# @macro waiting_behavior
#
# @return [Capybara::Node::Element] The found element
# @raise [Capybara::ElementNotFound] If the element can't be found before time expires
#
def ancestor(*args, **options, &optional_filter_block)
options[:session_options] = session_options
synced_resolve Capybara::Queries::AncestorQuery.new(*args, options, &optional_filter_block)
end
##
#
# Find an {Capybara::Node::Element} based on the given arguments that is also a sibling of the element called on.
# {#sibling} will raise an error if the element is not found.
#
# {#sibling} takes the same options as {#find}.
#
# element.sibling('#foo').find('.bar')
# element.sibling(:xpath, './/div[contains(., "bar")]')
# element.sibling('ul', text: 'Quox').click_link('Delete')
#
# @param (see #find)
#
# @macro waiting_behavior
#
# @return [Capybara::Node::Element] The found element
# @raise [Capybara::ElementNotFound] If the element can't be found before time expires
#
def sibling(*args, **options, &optional_filter_block)
options[:session_options] = session_options
synced_resolve Capybara::Queries::SiblingQuery.new(*args, options, &optional_filter_block)
end
##
#
# Find a form field on the page. The field can be found by its name, id or label text.
#
# @overload find_field([locator], **options)
# @param [String] locator name, id, {Capybara.configure test_id} attribute, placeholder or text of associated label element
#
# @macro waiting_behavior
#
#
# @option options [Boolean] checked Match checked field?
# @option options [Boolean] unchecked Match unchecked field?
# @option options [Boolean, Symbol] disabled (false) Match disabled field?
# * true - only finds a disabled field
# * false - only finds an enabled field
# * :all - finds either an enabled or disabled field
# @option options [Boolean] readonly Match readonly field?
# @option options [String, Regexp] with Value of field to match on
# @option options [String] type Type of field to match on
# @option options [Boolean] multiple Match fields that can have multiple values?
# @option options [String, Regexp] id Match fields that match the id attribute
# @option options [String] name Match fields that match the name attribute
# @option options [String] placeholder Match fields that match the placeholder attribute
# @option options [String, Array<String>, Regexp] class Match fields that match the class(es) passed
# @return [Capybara::Node::Element] The found element
#
def find_field(locator = nil, **options, &optional_filter_block)
find(:field, locator, options, &optional_filter_block)
end
##
#
# Find a link on the page. The link can be found by its id or text.
#
# @overload find_link([locator], **options)
# @param [String] locator id, {Capybara.configure test_id} attribute, title, text, or alt of enclosed img element
#
# @macro waiting_behavior
#
# @option options [String,Regexp,nil] href Value to match against the links href, if `nil` finds link placeholders (`<a>` elements with no href attribute), if `false` ignores the href
# @option options [String, Regexp] id Match links with the id provided
# @option options [String] title Match links with the title provided
# @option options [String] alt Match links with a contained img element whose alt matches
# @option options [String, Array<String>, Regexp] class Match links that match the class(es) provided
# @return [Capybara::Node::Element] The found element
#
def find_link(locator = nil, **options, &optional_filter_block)
find(:link, locator, options, &optional_filter_block)
end
##
#
# Find a button on the page.
# This can be any `<input>` element of type submit, reset, image, button or it can be a
# `<button>` element. All buttons can be found by their id, name, {Capybara.configure test_id} attribute, value, or title.
# `<button>` elements can also be found by their text content, and image `<input>` elements by their alt attribute.
#
# @overload find_button([locator], **options)
# @param [String] locator id, name, {Capybara.configure test_id} attribute, value, title, text content, alt of image
#
# @macro waiting_behavior
#
# @option options [Boolean, Symbol] disabled (false) Match disabled button?
# * true - only finds a disabled button
# * false - only finds an enabled button
# * :all - finds either an enabled or disabled button
# @option options [String, Regexp] id Match buttons with the id provided
# @option options [String] name Match buttons with the name provided
# @option options [String] title Match buttons with the title provided
# @option options [String] value Match buttons with the value provided
# @option options [String, Array<String>, Regexp] class Match buttons that match the class(es) provided
# @return [Capybara::Node::Element] The found element
#
def find_button(locator = nil, **options, &optional_filter_block)
find(:button, locator, options, &optional_filter_block)
end
##
#
# Find a element on the page, given its id.
#
# @macro waiting_behavior
#
# @param [String] id id of element
#
# @return [Capybara::Node::Element] The found element
#
def find_by_id(id, **options, &optional_filter_block)
find(:id, id, options, &optional_filter_block)
end
##
# @!method all([kind = Capybara.default_selector], locator = nil, **options)
#
# Find all elements on the page matching the given selector
# and options.
#
# Both XPath and CSS expressions are supported, but Capybara
# does not try to automatically distinguish between them. The
# following statements are equivalent:
#
# page.all(:css, 'a#person_123')
# page.all(:xpath, './/a[@id="person_123"]')
#
# If the type of selector is left out, Capybara uses
# {Capybara.configure default_selector}. It's set to `:css` by default.
#
# page.all("a#person_123")
#
# Capybara.default_selector = :xpath
# page.all('.//a[@id="person_123"]')
#
# The set of found elements can further be restricted by specifying
# options. It's possible to select elements by their text or visibility:
#
# page.all('a', text: 'Home')
# page.all('#menu li', visible: true)
#
# By default Capybara's waiting behavior will wait up to {Capybara.configure default_max_wait_time}
# seconds for matching elements to be available and then return an empty result if none
# are available. It is possible to set expectations on the number of results located and
# Capybara will raise an exception if the number of elements located don't satisfy the
# specified conditions. The expectations can be set using:
#
# page.assert_selector('p#foo', count: 4)
# page.assert_selector('p#foo', maximum: 10)
# page.assert_selector('p#foo', minimum: 1)
# page.assert_selector('p#foo', between: 1..10)
#
# @param [Symbol] kind Optional selector type (:css, :xpath, :field, etc.). Defaults to {Capybara.configure default_selector}.
# @param [String] locator The locator for the specified selector
# @macro system_filters
# @macro waiting_behavior
# @option options [Integer] count Exact number of matches that are expected to be found
# @option options [Integer] maximum Maximum number of matches that are expected to be found
# @option options [Integer] minimum Minimum number of matches that are expected to be found
# @option options [Range] between Number of matches found must be within the given range
# @option options [Boolean] allow_reload When `true` allows elements to be reloaded if they become stale. This is an advanced behavior and should only be used
# if you fully understand the potential ramifications. The results can be confusing on dynamic pages.
# @overload all([kind = Capybara.default_selector], locator = nil, **options)
# @overload all([kind = Capybara.default_selector], locator = nil, **options, &filter_block)
# @yieldparam element [Capybara::Node::Element] The element being considered for inclusion in the results
# @yieldreturn [Boolean] Should the element be considered in the results?
# @return [Capybara::Result] A collection of found elements
# @raise [Capybara::ExpectationNotMet] The number of elements found doesn't match the specified conditions
def all(*args, allow_reload: nil, **options, &optional_filter_block)
minimum_specified = options_include_minimum?(options)
options = { minimum: 1 }.merge(options) unless minimum_specified
options[:session_options] = session_options
query = Capybara::Queries::SelectorQuery.new(*args, options, &optional_filter_block)
result = nil
begin
synchronize(query.wait) do
result = query.resolve_for(self)
result.allow_reload! if allow_reload
raise Capybara::ExpectationNotMet, result.failure_message unless result.matches_count?
result
end
rescue Capybara::ExpectationNotMet
raise if minimum_specified || (result.compare_count == 1)
Result.new([], nil)
end
end
alias_method :find_all, :all
##
#
# Find the first element on the page matching the given selector
# and options. By default {#first} will wait up to {Capybara.configure default_max_wait_time}
# seconds for matching elements to appear and then raise an error if no matching
# element is found, or `nil` if the provided count options allow for empty results.
#
# @overload first([kind], locator, options)
# @param [Symbol] kind The type of selector
# @param [String] locator The selector
# @param [Hash] options Additional options; see {#all}
# @return [Capybara::Node::Element] The found element or nil
# @raise [Capybara::ElementNotFound] If element(s) matching the provided options can't be found before time expires
#
def first(*args, **options, &optional_filter_block)
options = { minimum: 1 }.merge(options) unless options_include_minimum?(options)
all(*args, options, &optional_filter_block).first
end
private
def synced_resolve(query)
synchronize(query.wait) do
if prefer_exact?(query)
result = query.resolve_for(self, true)
result = query.resolve_for(self, false) if result.empty? && query.supports_exact? && !query.exact?
else
result = query.resolve_for(self)
end
raise Capybara::Ambiguous, "Ambiguous match, found #{result.size} elements matching #{query.applied_description}" if ambiguous?(query, result)
raise Capybara::ElementNotFound, "Unable to find #{query.applied_description}" if result.empty?
result.first
end.tap(&:allow_reload!)
end
def ambiguous?(query, result)
%i[one smart].include?(query.match) && (result.size > 1)
end
def prefer_exact?(query)
%i[smart prefer_exact].include?(query.match)
end
def options_include_minimum?(opts)
%i[count minimum between].any? { |key| opts.key?(key) }
end
def parent
first(:xpath, './parent::*', minimum: 0)
end
end
end
end