在尝试匹配文本完全匹配的元素时,我很难使用Capybara的have_selector.我知道这可以使用正则表达式来完成,但是我对 Capybara’s blog post的阅读使我相信我可以使用:exact arg或set Capybara.exact
假设我有一个页面(称为“测试页面”).在这个页面是这样的:
<div id="my_div">abcdef</div>
我有一个Cucumber功能测试,看起来像这样:
Feature: Test for exact text matches in have_selector Scenario: Given I am on the test page Then I should get a partial text match "bcde" in my div And I should get a partial text match "abcdef" in my div And I should get an exact text match using regexp "abcdef" in my div And I should not get an exact text match using regexp "bcde" in my div And I should get an exact text match using arg "abcdef" in my div And I should not get an exact text match using arg "bcde" in my div
我的步骤定义如下所示:
Then /^I should get a partial text match "([^\"]*)" in my div$/ do |text| page.should have_selector('div#my_div', :text => text) end Then /^I should get an exact text match using regexp "([^\"]*)" in my div$/ do |text| page.should have_selector('div#my_div', :text => /^#{text}$/) end Then /^I should not get an exact text match using regexp "([^\"]*)" in my div$/ do |text| page.should_not have_selector('div#my_div', :text => /^#{text}$/) end Then /^I should get an exact text match using arg "([^\"]*)" in my div$/ do |text| page.should have_selector('div#my_div', :text => text, :exact => true) end Then /^I should not get an exact text match using arg "([^\"]*)" in my div$/ do |text| page.should_not have_selector('div#my_div', :text => text, :exact => true) end
与我的期望相反,我收到以下错误:
And I should not get an exact text match using arg "bcde" in my div expected not to find css "div#my_div" with text "bcde", found 1 match: "abcdef" (Capybara::ExpectationNotMet)
这让我相信:exact => true在我的have_selector调用中没有做任何事情.我有同样的尝试在我的测试设置配置中设置Capybara.exact = true,但这似乎也没有影响我的测试,我希望我的方式.
我错过了什么吗?或者我误解了该选项应该如何使用?我知道我总是可以使用正则表达式语法来匹配精确的文本字符串,但我认为:exact选项是专门针对这种情况的.
有一个开放的功能请求 Capybara Github Issue 1256,让has_selector(和其他)支持精确的文本匹配.但是,就目前而言(在Capybara 2.x中),:exact选项不适用于:text选项.如果我没记错的话,那就是下面的一段代码(来自query.rb)进行文本选项过滤.如您所见,没有逻辑或考虑:确切选项.
def matches_filters?(node) if options[:text] regexp = options[:text].is_a?(Regexp) ? options[:text] : Regexp.escape(options[:text].to_s) return false if not node.text(visible).match(regexp) end
根据Capybara docs,:exact选项实际上是:
Control whether
is
expressions in the given XPath match exactly or
partially
这基本上只在Capybara::Node::Actions中使用,其中文本(或id,名称等)未指定为选项 – ex:
# Will match links that exactly match 'Password' click_link('Password', :exact => true) # Will match links that contain the word 'Password' - ex 'Password Confirmation' click_link('Password', :exact => false)