Question

我有一些带有一些列的html表。每行显示报告的名称我可以选择一个报告，然后单击“运行”按钮来处理报告。文字＆＃34;查看＆＃34;单击“报告”按钮后，它将显示在“视图”列中。＆＃34;视图＆＃34;文字不会出现在它自己的上面。在文本出现之前可以点击几下。我想继续点击“报告”按钮，直到＆＃34;查看＆＃34;文字出现

我认为最好的解决方案是以某种方式将其置于while循环中。

我试过，但是我收到了错误：

UnboundLocalError: local variable 'element' referenced before assignment

错误跟踪是：

    Error
Traceback (most recent call last):
  File "C:\Webdriver\ClearCore\TestCases\ReportingPage_TestCase.py", line 81, in test_1_add_matches_report
    print reports_page.is_view_link_present_to_view_the_report("Matches")
  File "C:\Webdriver\ClearCore\Pages\reports.py", line 321, in is_view_link_present_to_view_the_report
    view_element = self.get_element(By.XPATH, '//table[@id="reporting_reports_ct_fields_body"]//td[.//span[text()="%s"]]/following-sibling::td[2]//span[text()="view"]' % report_name)
  File "C:\Webdriver\ClearCore\Pages\base.py", line 34, in get_element
    return element
UnboundLocalError: local variable 'element' referenced before assignment

使用While循环等待元素找到的方法是：

from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
class ReportsPage(BasePage):

def __init__(self, d):
        super(ReportsPage, self).__init__(d)
        self.datamap_name = UsefulHelperMethods.read_from_file("datamap_name")
        self.tool_bar = ToolbarPage(self.driver)

def is_view_link_present_to_view_the_report(self, report_name):
            # Params : report_name : Name of the report which to select to view
            table_id = WebDriverWait(self.driver, 20).until(EC.presence_of_element_located((By.ID, 'reporting_reports_ct_fields_body')))
            found = False
            while not found:
                try:
                    view_element = self.driver.find_element(By.XPATH, '//table[@id="reporting_reports_ct_fields_body"]//td[.//span[text()="%s"]]/following-sibling::td[2]//span[text()="view"]' % report_name)
                    found = True
                except NoSuchElementException:
                    time.sleep(2)
                    self.tool_bar.click_reports_button_from_toolbar()

在我的基类中定义的元素是：

from selenium.webdriver.common.by import By
from selenium.common.exceptions import NoSuchElementException


class BasePage(object):

def __init__(self, driver):
        self.driver = driver
        self.driver.implicitly_wait(120)


# returns the element if found
    def get_element(self, how, what):
        # params how: By locator type
        # params what: locator value
        try:
            element = self.driver.find_element(by=how, value=what)
        except NoSuchElementException, e:
            print what
            print "Element not found "
            print e
        return element

我调用该方法的TestCase类是：

    from Menus.project_navigator import ProjectNavigatorPage
    from Menus.toolbar import ToolbarPage
    from Pages.reports import ReportsPage

    class ReportingPage_TestCase(BaseTestCase):

        def test_1_add_matches_report(self):
            tool_bar = ToolBarPage(self.driver)
            project_navigator = ProjectNavigatorPage(self.driver)
            reports_page = project_navigator.select_projectNavigator_item("Reports")
            reports_page.click_add_button_for_reports()
            reports_page.select_a_report_checkbox_from_reports_page("Matches")
            reports_page.click_run_button_to_run_the_report()
            reports_page.click_ok_from_reports_dialog()
            tool_bar.click_reports_button_from_toolbar()
            print reports_page.is_view_link_present_to_view_the_report("Matches")

如何继续点击报告按钮（比如每2秒）并检查＆＃34;视图＆＃34;文字存在。继续尝试约5分钟。如果在5分钟结束时它仍然没有找到视图链接然后打印未找到的视图文本，测试失败？我不想使用time.sleep，因为这不是很有效。视图文本可能会在几秒或一分钟内出现，具体取决于报告的大小。

谢谢，帮助表示感谢。里亚兹

HTML是：

<table id="reporting_reports_ct_fields_body" cellspacing="0" style="table-layout: fixed; width: 100%;">
<colgroup>
    <tbody>
        <tr class="GLKP2TGBFG GLKP2TGBMG" __gwt_subrow="0" __gwt_row="0">
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBHG GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7232" style="outline-style:none;" tabindex="0">
                    <input type="checkbox" tabindex="-1" />
                </div>
            </td>
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7233" style="outline-style:none;">
                    <span class="linkhover" title="Matches" style="white-space:nowrap;overflow:hidden;text-overflow:ellipsis;empty-cells:show;display:block;color:#00A;cursor:pointer;">Matches</span>
                </div>
            </td>
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7234" style="outline-style:none;">
                    <span class="" title="manual" style="white-space:nowrap;overflow:hidden;text-overflow:ellipsis;empty-cells:show;display:block;padding-right: 1px;">manual</span>
                </div>
            </td>
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7235" style="outline-style:none;">
                    <span class="linkhover block" title="view" style="white-space:nowrap;overflow:hidden;text-overflow:ellipsis;empty-cells:show;display:block;color:#00A;cursor:pointer;">view</span>
                </div>
            </td>
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7236" style="outline-style:none;">
                    <span class="" title="Matches report" style="white-space:nowrap;overflow:hidden;text-overflow:ellipsis;empty-cells:show;display:block;padding-right: 1px;">Matches report</span>
                </div>
            </td>
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7237" style="outline-style:none;">
                    <span class="" title="USN entities" style="white-space:nowrap;overflow:hidden;text-overflow:ellipsis;empty-cells:show;display:block;padding-right: 1px;">USN entities</span>
                </div>
            </td>
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7238" style="outline-style:none;">
                    <span class="" title="05/11/2015 15:24:47" style="white-space:nowrap;overflow:hidden;text-overflow:ellipsis;empty-cells:show;display:block;padding-right: 1px;">05/11/2015 15:24:47</span>
                </div>
            </td>
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7239" style="outline-style:none;">
                    <span class="block" title="" style="">12</span>
                </div>
            </td>
            <td class="GLKP2TGBEG GLKP2TGBGG GLKP2TGBBH GLKP2TGBNG">
                <div __gwt_cell="cell-gwt-uid-7240" style="outline-style:none;">
                    <span class="" title="INFOSHARE\riaz.ladhani" style="white-space:nowrap;overflow:hidden;text-overflow:ellipsis;empty-cells:show;display:block;padding-right: 1px;">COMPANY\riaz.ladhani</span>
                </div>
            </td>
        </tr>
        <tr class="GLKP2TGBEH" __gwt_subrow="0" __gwt_row="1">
    </tbody>

Answer 1

元素仅存在于try块中，您必须在try块之外定义它。在伪代码中，它看起来像：

try
{
   var element;
}
...
return element; // but does not exist in this scope here

只需在你的尝试中退回即可，你很好，不需要额外的一行：

    try:
        return self.driver.find_element(by=how, value=what)
    except NoSuchElementException, e:
        print what
        print "Element not found "
        print e
    return None

要继续单击您可以使用WebDriverWait的按钮（如果在None中找不到该元素，则需要返回get_element。）

创建一个新方法，点击并检查元素

def clickTillView:
   reportElement.click()
   return get_element(self, how, what) != None

然后你可以等待clickTillView成为真正的元素存在

new WebDriverWait(driver, 10000, 1, None).until(clickTillView(), "view was not found in time")

原谅我的Python错误，我是一个Java家伙：p但这基本上就是你如何解决它。

Selenium Webdriver Python如何在单击按钮后等待元素文本出现并继续尝试直到文本出现

1 个答案: