Unit Testing Integration Testing
It takes place independently, not bound in any sequence. It takes place after Unit testing and before System testing.
There are no abbreviations. It is abbreviated as I&T, sometimes known as Integration & Testing.
There are no further divisions of Unit Testing It is divided into Top-Down and Bottom-Up Integrations.
Unit testing does not cover system-wide issues and errors. It covers any kind of errors that arise when you combine all the modules with building the system.
The goal is to isolate parts of the program and test if they are working fine. The goal is to combine all the parts together and check if the system works fine.
Data Binding Two-Way/One-Way
It tests the visibility of the code in detail. It tests the visibility of the integration structure.
It is a kind of white-box testing. It is kind of both white-box and black-box testing.