robot framework中和screenshot有关的三个关键字的用法解析

本文链接：https://blog.youkuaiyun.com/happyjxt/article/details/50582328

在robot framework中和屏幕截图有关的共有三个关键字，分别是：

1）Set Screenshot Directory关键字

Source:Screenshot <test library>
Arguments:[ path ]
Sets the directory where screenshots are saved.
It is possible to use / as a path separator in all operating systems. Path to the old directory is returned.
The directory can also be set in `importing`.

这个关键字只有一个path参数，用来设定屏幕截图的存放位置，用户可以自定义设定屏幕截图的存放位置，如D:/python_test目录下

Set Screenshot Directory D:/python_test

如果运行中的log中出现如下信息：

20160125 18:33:18.028 : WARN : Keyword 'Set Screenshot Directory' found both from a custom test library 'Selenium2Library' and a standard library 'Screenshot'. The custom keyword is used. To select explicitly, and to get rid of this warning, use either 'Selenium2Library.Set Screenshot Directory' or 'Screenshot.Set Screenshot Directory'.
20160125 18:33:18.122 : INFO : Screenshot saved to '<a href="screenshot_2.jpg">c:\users\my-pc\appdata\local\temp\RIDEr65zse.d\screenshot_2.jpg</a>'.
Ending test: Win8 Test.Win8 Test.dictionary_test

说明了在不同的库中有相同关键字，产生了冲突，需要显示的加入到Screenshot库中。

2）Take Screenshot关键字

Source: Screenshot <test library>
Arguments: [ name=screenshot | width=800px ]

此关键字下的参数较多，如果不设定任何参数，默认是将截图嵌入到page中，并显示出来，生成的屏幕截图存放在和log信息

相同的目录下，命名为screenshot_*.jpg，其中*从1开始，每次运行迭代后，增加1.

参数表格：

Examples: (LOGDIR is determined automatically by the library)

Take Screenshot # LOGDIR/screenshot_1.jpg (index automatically incremented) //默认的命名，每次运行自动递增一
Take Screenshot mypic# LOGDIR/mypic_1.jpg (index automatically incremented) //固定部分的截图名字，剩余部分在每次运行自动递增一
Take Screenshot ${TEMPDIR}/mypic# /tmp/mypic_1.jpg (index automatically incremented) //设定某个目录下命名
Take Screenshot pic.jpg# LOGDIR/pic.jpg (always uses this file) //固定截图文件名字
Take Screenshot images/login.jpg80%# Specify both name and width. //设置截图名字和宽度
Take Screenshot width=550px# Specify only width. // 设置截图宽度

3)Take Screenshot Without Embedding关键字

Takes a screenshot and links it from the log file.
This keyword is otherwise identical to `Take Screenshot` but the saved screenshot is not embedded into the log file. The screenshot is linked so it is nevertheless easily available.

此关键字表示生成的屏幕截图不会显示在网页中，而是以超链接的方式出现。

实例：修改屏幕截图到d盘下的某个目录，并以非嵌入式的方式显示。

代码如下：

comment these two commands mean that to set a path for the screenshot without embeding into log file
Screenshot.Set Screenshot Directory D:/python_test
Take Screenshot Without Embedding