selenium3 beta初体验

测试积点老人

从selenium 1.0 至今,差不多有十多年的历史。

那么selenium3.0 为我们带来了什么？

看一下changelog怎么写的：

1. v3.0.0-beta2
   
2. ============
   
3. 
   
4. * maven packaging fixes
   
5. * Update GeckoDriver --port argument in all bindings
   
6. * System property webdriver.firefox.marionette now forces the server in marionette or legacy firefox driver mode, ignoring any related Desired Capability
   
7. * Grid fix NPE's on registration when -browser not specified
   
8. 
   
9. v3.0.0-beta1
   
10. ============
    
11. 
    
12. IMPORTANT CHANGES
    
13. 
    
14. * Minimum java version is now 8+
    
15. * The original RC APIs are only available via the leg-rc package.
    
16. * To run exported IDE tests, ensure that the leg-rc package is on the
    
17.   classpath.
    
18. * Support for Firefox is via Mozilla's geckodriver. You may download
    
19.   this from https://github.com/mozilla/geckodriver/releases
    
20. * Support for Safari is provided on macOS (Sierra or later) via
    
21.   Apple's own safaridriver.
    
22. * Support for Edge is provided by MS:
    
23.   https://developer.microsoft.com/en-us/microsoft-edge/tools/webdriver/
    
24. * Official support for IE requires version 9 or above. Earlier
    
25.   versions may work, but are no longer supported as MS has
    
26.   end-of-lifed them.
    
27. 
    
28. Other major changes:
    
29. 
    
30. * New html-table runner backed by WebDriver.
    
31. * Unused command line arguments are now no longer parsed.

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总结一下主要的change 如下：

1. 支持java最低版本1.8

2. 支持FireFox geckodriver

（下载地址：https://github.com/mozilla/geckodriver/releases ）类似chrome driver

3. 最低支持IE9

4. 移处旧RC

并无让人心动的变化

Firefox gecko driver:

现在使用Firefox ，如果没有在property设置，将会出现以下Exception

1. java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.gecko.driver system property; for more information, see https://github.com/mozilla/geckodriver. The latest version can be downloaded from https://github.com/mozilla/geckodriver/releases
   
2.     at com.google.common.base.Preconditions.checkState(Preconditions.java:199)
   
3.     at org.openqa.selenium.remote.service.DriverService.findExecutable(DriverService.java:109)
   
4.     at org.openqa.selenium.firefox.GeckoDriverService.access$100(GeckoDriverService.java:38)
   
5.     at org.openqa.selenium.firefox.GeckoDriverService$Builder.findDefaultExecutable(GeckoDriverService.java:91)
   
6.     at org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:296)
   
7.     at org.openqa.selenium.firefox.FirefoxDriver.createCommandExecutor(FirefoxDriver.java:245)
   
8.     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:220)
   
9.     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:215)
   
10.     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:211)
    
11.     at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:128)
    
12.     at com.dbyl.libarary.utils.DriverFactory.getFirefoxDriver(DriverFactory.java:126)
    
13.     at com.dbyl.tests.getAlert.FireFoxDriver(getAlert.java:24)
    
14.     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    
15.     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    
16.     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    
17.     at java.lang.reflect.Method.invoke(Method.java:498)
    
18.     at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
    
19.     at org.testng.internal.Invoker.invokeMethod(Invoker.java:648)
    
20.     at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:834)
    
21.     at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1142)
    
22.     at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:124)
    
23.     at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
    
24.     at org.testng.TestRunner.privateRun(TestRunner.java:771)
    
25.     at org.testng.TestRunner.run(TestRunner.java:621)
    
26.     at org.testng.SuiteRunner.runTest(SuiteRunner.java:357)
    
27.     at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:352)
    
28.     at org.testng.SuiteRunner.privateRun(SuiteRunner.java:310)
    
29.     at org.testng.SuiteRunner.run(SuiteRunner.java:259)
    
30.     at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    
31.     at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    
32.     at org.testng.TestNG.runSuitesSequentially(TestNG.java:1176)
    
33.     at org.testng.TestNG.runSuitesLocally(TestNG.java:1101)
    
34.     at org.testng.TestNG.run(TestNG.java:1009)
    
35.     at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
    
36.     at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
    
37.     at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)

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这个时候需要如下设置：

1. System.setProperty("webdriver.gecko.driver", "webDriver//geckodriver.exe");

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Dev Tools 简介1. 使用xpath 定位Web Element

在console 输入：$x("")

2. 使用CSS selector定位web Element

在console 里输入：$("")

3. 执行js

window.alert("")

执行jQuery

1. window.getComputedStyle(document.getElementById("su"),null).getPropertyValue("background")

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