如何操作select下拉框
在selenium-webdriver中定位select list的方法比较简单,用id和name等属性可以很方便的将select给找出来,但是怎么去选择下拉框中的某一项呢? 思路是这样的,首先定位到select list元素,然后找出该select list下所有的option,点击该option element既可,以下面的html代码为例
dr = Selenium::WebDriver.for :firefox select_file = 'file:///'.concat File.expand_path(File.join(File.dirname(FILE), 'select.html')) dr.navigate.to select_file dr.find_element(:id => 's').find_elements(:tag_name => 'option')[1].click 不难看出这样的代码还是不太直观的。为了能够更好的操作select元素,我们可以对其做一个简单的封装,示例代码如下: easy_wrap.rb
require 'rubygems' require 'selenium-webdriver' module EasyWrap class Select def initialize e raise NotValidElementError unless e.is_a?(Selenium::WebDriver::Element) @e = e child_options end
def select_by_value value
@ops.each do |op|
op.click if op['value'] == value
end
end
def select_by_index index
@ops[index].click if valid_index? index
end
def select_by_text text
@ops.each do |op|
op.click if op['text'] == text
end
end
def valid_index? index
index.to_i < (@ops.size - 1)
end
def child_options
begin
@ops = @e.find_elements(:tag_name => 'option')
rescue
raise CanNotFindOptionError, "can not find options in #{@o}"
exit
end
end
def options
@ops_text_arr = []
@ops.each do |op|
@ops_text_arr << op['text']
end
@ops_text_arr
end
end
class EasyWrapError < StandardError; end
class NotValidElementError < EasyWrapError; end
class CanNotFindOptionError < EasyWrapError; end
end #EasyWrap 通过引用该文件,我们的代码此时就应该是如下所示 select.rb
require './easy_wrap'
dr = Selenium::WebDriver.for :firefox select_file = 'file:///'.concat File.expand_path(File.join(File.dirname(FILE), 'select.html')) dr.navigate.to select_file s = EasyWrap::Select.new dr.find_element(:id => 's')
选择value是1的option
s.select_by_value('1') sleep 2
选择index是2的option,也就是第3个option
s.select_by_index(2) sleep 2
选择text是Op4的option
s.select_by_text('Op4') sleep 3 dr.close 上面的代码可以看出,在选择了下拉框的某1个option时,如果下拉框上绑定有onchange事件,那么onchange事件是不会被触发的,这应该是上面解决方案的一个缺陷。
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