What is app functionality testing?

Software function test is a test method to verify whether the product function meets the user's requirements. It uses test cases to test the various functions of the product to ensure that it works as intended. A test case is a set of inputs and expected results used to verify that a product behaves as expected under certain conditions.

In functional testing, testers need to perform tests against test cases and compare actual and expected results. If the actual results do not match the expected results, there may be defects or errors that require further investigation and repair.

2. Methods of functional testing include

Black box test, white box test and gray box test.

1. Black box testing focuses on the external behavior between input and output, regardless of the internal structure of the program.

2. White box testing takes into account the internal structure and logic of the program and tests each code path.

3. Gray box testing combines the characteristics of black box testing and white box testing, focusing on both external behavior and internal structure.
When conducting functional testing, it is necessary to consider all possible inputs and scenarios from the user's point of view to ensure that the function of the product can work properly. In addition, functional testing needs to take into account boundary conditions and exceptions, such as the behavior of the product in the case of invalid data input or disconnection.

In short, app functionality testing is an important link to ensure product quality, through testing can find and repair the defects and errors in the product, improve the reliability and stability of the product.