Selenium2+python自动化49-判断文本(text_to_be_present_in_element)

前言

在做结果判断的时候,经常想判断某个元素中是否存在指定的文本,如登录后判断页面中是账号是否是该用户的用户名。

在前面的登录案例中,写了一个简单的方法,但不是公用的,在EC模块有个方法是可以专门用来判断元素中存在指定文本的:text_to_be_present_in_element。

另外一个差不多复方法判断元素的value值:text_to_be_present_in_element_value。

一、源码分析

class text_to_be_present_in_element(object):
    """ An expectation for checking if the given text is present in the
    specified element.
    locator, text
    """

'''翻译:判断元素中是否存在指定的文本,参数:locator, text'''
    def __init__(self, locator, text_):
        self.locator = locator
        self.text = text_

def __call__(self, driver):
        try:
            element_text = _find_element(driver, self.locator).text
            return self.text in element_text
        except StaleElementReferenceException:
            return False

1.翻译:判断元素中是否存在指定的文本,两个参数:locator, text

2.__call__里返回的是布尔值:Ture和False

二、判断文本

1.判断百度首页上,“糯米”按钮这个元素中存在文本:糯米

2.locator参数是定位的方法

3.text参数是期望的值

三、失败案例

1.如果判断失败,就返回False

四、判断value的方法
class text_to_be_present_in_element_value(object):
    """
    An expectation for checking if the given text is present in the element's
    locator, text
    """
    def __init__(self, locator, text_):
        self.locator = locator
        self.text = text_

def __call__(self, driver):
        try:
            element_text = _find_element(driver,
                                         self.locator).get_attribute("value")
            if element_text:
                return self.text in element_text
            else:
                return False
        except StaleElementReferenceException:
                return False

1.这个方法跟上面的差不多,只是这个是判断的value的值

2.这里举个简单案例,判断百度搜索按钮的value值

五、参考代码

# coding:utf-8
from selenium import webdriver
from selenium.webdriver.support import expected_conditions as EC
driver = webdriver.Firefox()
url = "https://www.baidu.com"
driver.get(url)

locator = ("name", "tj_trnuomi")
text = u"糯米"
result = EC.text_to_be_present_in_element(locator, text)(driver)
print result
#

# 下面是失败的案例
text1 = u"糯米网"
result1 = EC.text_to_be_present_in_element(locator, text1)(driver)
print result1

locator2 = ("id", "su")
text2 = u"百度一下"
result2 = EC.text_to_be_present_in_element(locator2, text2)(driver)
print result2

(0)

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