Black-box Testing

Introduction

In this section, we will introduce a high-level concept called black-box testing. Black-box testing involves testing (including unit testing) the application code with no prior knowledge of its internal implementation. In black-box testing, you provide inputs and observe outputs without understanding the underlying implementation. This makes it possible to identify how the system responds to expected or unexpected user actions.

The principles of black-box testing apply to testing in general. It is applicable to unit, integration, and end-to-end testing.

More about black-box testing

The level of unit testing transparency can either be black-box or white-box. One of the main differences is how much the tester knows. With white box testing, the tester needs some knowledge of the internal workings of the code to write tests. Another difference is how the test cases are generated.

With black-box testing, emphasis is placed on how the application code should interact with the outside without knowing the implementation ...