我的页面应该包含一个类似
<a href="/desired_path/1">Click to go</a>
的链接。
您将如何使用assert_select 进行测试?我想检查是否存在带有
a
的 href="/desired_path/1"
标签。如何测试标签的属性?
有没有资源解释如何使用assert_select?我阅读了指南和 API 文档,但没有弄清楚。有没有推荐的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。
谢谢。
在assert_select中,还可以用问号作为属性值,然后跟一个字符串来匹配。
assert_select "a[href=?]", "/desired_path/1"
还有另一种更友好的使用assert_select的方法,特别是当你想匹配部分字符串或正则表达式模式时:
assert_select "a", :href => /acebook\.com\/share/
以下是如何使用
assert_select
断言有关链接的许多内容。第二个参数可以是字符串或正则表达式来测试 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' }
有关使用
assert_select
的其他方式,以下是取自 Rails actionpack 3.2.15 文档的示例(请参阅文件 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
您可以将任何CSS选择器传递给assert_select。因此,要测试标签的属性,您可以使用
[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
这个问题特别问,“你如何测试[元素]的属性?”
这里的其他答案使用
assert_select
的方式在当前 Rails / MiniTest 中不再有效。根据此问题,有关属性内容的断言现在使用更多 Xpath-y“匹配”语法:
assert_select "a:match('href', ?)", /jm3\.net/
对于使用来自 Rails 4.1 的assert_select 并升级到 Rails 4.2 的任何人。
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,出现错误:“弃用警告:由于 css 选择器无效,断言未运行。‘[:equal, "\"/my_results\""]'" 之后出现意外的 '('
我将语法更改为此并且有效!:
assert_select 'a[href=?]', my_url, { text: my_text }
艾略特上面的回答帮助了我,谢谢:)
assert_select 'a' do |link|
expect(link.attr('href').to_s).to eq expected_url
end
rails (7.0.8), selenium-webdriver (4.12.0), capybara (3.39.2)
assert_selector :link, I18n.t("en.yml path here"), href: url_path
assert_selector :link, "Im the path", href: url_path