When developing Windows applications, we often need to perform tests to ensure the quality and stability of the program. Manual testing is a common method, but it is very time-consuming and cumbersome, especially for large applications where the testing workload is very high. Therefore, we need automated testing tools to help us improve testing efficiency and accuracy.
pywinauto is a powerful Python library that helps us automate the testing of Windows applications. pywinauto can simulate the user's mouse and keyboard actions on the Windows operating system, as well as read and manipulate the properties and methods of window controls. Using pywinauto, we can easily write scripts to simulate user actions for automated testing.
Install pywinauto
Before we can use pywinauto, we need to install it. You can use pip to install pywinauto:
pip install pywinauto
Automated testing with pywinauto
Let's look at a simple example demonstrating how to automate tests using pywinauto. We will use the calculator application that comes with Windows as our test subject.
First, we need to start the calculator application. This can be done using pywinauto's Application class:
frompywinautoimportApplicationapp = Application().start("")
The above code will start the calculator application and store its handle in the app variable.
Next, we need to get the handle to the calculator window. The window can be found using pywinauto's find_window function:
dlg = app['Calculator']
The above code will find the window named "Calculator" and store its handle in the dlg variable.
Now, we can start simulating the user's actions. Suppose we need to test the addition function of the calculator, we can follow these steps:
Click on the number "1" button.
dlg['1'].click()
Click on the "+" button.
dlg['+'].click()
Click on the number "2" button.
dlg['2'].click()
Click on the "=" button.
dlg['='].click()
Verify that the result of the calculation is "3".
result = dlg['CalculatorResults'].children()[0].window_text() assert result == '3'
The above code will take the text in the calculator result box and compare it to the expected result of "3". If they are equal, then the test passes.
The complete test script is shown below:
from pywinauto import Application
app = Application().start("")
dlg = app['Calculator']
dlg['1'].click()
dlg['+'].click()
dlg['2'].click()
dlg['='].click()
result = dlg['CalculatorResults'].children()[0].window_text()
assert result == '3'
With the above example, we can see that pywinauto is very easy to use and does not require mastering too many APIs, just some basic operations to complete the automation test.
In this article, we describe how to automate tests using pywinauto. pywinauto is a powerful Python library that helps us simulate user mouse and keyboard actions on Windows operating systems, as well as read and manipulate properties and methods of window controls. Using pywinauto, we can easily write scripts to simulate user actions for automated testing.
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