Which type of testing refers to the checking of a single Flutter widget?*1 pointUnit TestingWidget TestingIntegration TestingAutomated Testing

To determine the type of testing that refers to the checking of a single Flutter widget, we can analyze the given options:

1. Unit Testing: This type of testing focuses on testing individual units or components of code in isolation. It is used to verify the correctness of small, independent parts of the code. While unit testing can be used to test individual functions or methods within a widget, it does not specifically refer to testing a single Flutter widget.

2. Widget Testing: This type of testing is specifically designed for testing Flutter widgets. It involves testing the behavior and appearance of individual widgets in isolation. Widget testing allows developers to simulate user interactions and verify the expected output of the widget. Therefore, widget testing refers to the checking of a single Flutter widget.

3. Integration Testing: Integration testing involves testing the interaction between different components or modules of an application. It focuses on verifying that the integrated parts of the application work correctly together. While integration testing can include testing the interaction between multiple widgets, it does not specifically refer to testing a single Flutter widget.

4. Automated Testing: Automated testing refers to the use of tools and scripts to automate the testing process. It can include various types of testing, such as unit testing, integration testing, and widget testing. While automated testing can be used to test a single Flutter widget, it is not a specific type of testing that refers only to the checking of a single widget.

Based on the above analysis, the type of testing that refers to the checking of a single Flutter widget is Widget Testing.