我的网页应包含类似<a href="/desired_path/1">Click to go</a>
的链接。
你如何使用assert_select测试?我想检查a
标记是否存在href="/desired_path/1"
。如何测试标签的属性?
是否有任何资源可以解释如何使用assert_select?我阅读了指南和API文档,但没有弄清楚。有没有建议更好的方法来做到这一点?
我正在使用Rails 3并使用内置的测试框架。
感谢。
答案 0 :(得分:27)
在assert_select中,您还可以使用问号作为属性值,然后使用字符串进行匹配。
assert_select "a[href=?]", "/desired_path/1"
还有另一种方法可以使用更友好的assert_select,特别是如果你想匹配部分字符串或正则表达式模式:
assert_select "a", :href => /acebook\.com\/share/
答案 1 :(得分:17)
以下是使用assert_select
声明链接的一些内容的方法。第二个参数可以是String或Regexp来测试href属性:
# URL string (2nd arg) is compared to the href attribute thanks to the '?' in
# CSS selector string. Also asserts that there is only one link matching
# the arguments (:count option) and that the link has the text
# 'Your Dashboard' (:text option)
assert_select '.menu a[href=?]', 'http://test.host/dashboard',
{ :count => 1, :text => 'Your Dashboard' }
# Regular expression (2nd arg) tests the href attribute thanks to the '?' in
# the CSS selector string.
assert_select '.menu a[href=?]', /\Ahttp:\/\/test.host\/dashboard\z/,
{ :count => 1, :text => 'Your Dashboard' }
对于其他使用assert_select
的方法,以下是Rails actionpack 3.2.15 docs中的示例(参见文件actionpack-3.2.15/lib/action_dispatch/testing/assertions/selector.rb
):
# At least one form element
assert_select "form"
# Form element includes four input fields
assert_select "form input", 4
# Page title is "Welcome"
assert_select "title", "Welcome"
# Page title is "Welcome" and there is only one title element
assert_select "title", {:count => 1, :text => "Welcome"},
"Wrong title or more than one title element"
# Page contains no forms
assert_select "form", false, "This page must contain no forms"
# Test the content and style
assert_select "body div.header ul.menu"
# Use substitution values
assert_select "ol>li#?", /item-\d+/
# All input fields in the form have a name
assert_select "form input" do
assert_select "[name=?]", /.+/ # Not empty
end
答案 2 :(得分:16)
您可以将任何CSS选择器传递给assert_select。因此,要测试标记的属性,请使用[attrname=attrvalue]
:
assert_select("a[href=/desired_path/1]") do |elements|
# Here you can test that elements.count == 1 for instance, or anything else
end
答案 3 :(得分:2)
对于任何使用来自Rails 4.1的assert_select并升级到Rails 4.2的人。
在4.1中,这有效:
my_url = "/my_results?search=hello"
my_text = "(My Results)"
assert_select 'a[href=?]', my_url, my_text
在4.2中,这给出了一个错误:&#34; DEPRECATION警告:由于css选择器无效,因此未运行断言。意外的&#39;(&#39;在&#39; [:相等,&#34; \&#34; / my_results \&#34;&#34;]&#39;&#34;&#34;
我将语法更改为此并且有效!:
assert_select 'a[href=?]', my_url, { text: my_text }
以上的艾略特回答帮助了我,谢谢:)。
答案 4 :(得分:2)
问题特别问:“你如何测试[元素]的属性?”
此处的其他答案使用assert_select
以不再适用于当前Rails / MiniTest的方式。根据这个issue,关于属性内容的断言现在使用这个更多的Xpath-y'匹配'语法:
assert_select "a:match('href', ?)", /jm3\.net/
答案 5 :(得分:1)
assert_select 'a' do |link|
expect(link.attr('href').to_s).to eq expected_url
end