There are 4 types of testing techniques
1. Static Testing
2. White Box Testing
3. Black Box Testing
4. Grey Box Testing

1. Static Testing: Testing of an application without execution on the computer  or without executing them through values.

2. White Box Testing: Here testing is done on code written, like loop coverage, statement coverage, execution loop coverage. Testing done on the code .

3. Black Box Testing: Here testing is done to check the behaviour of the application. Here the behaviour of the application should be towards the Customer's Requirements.

Grey Box Testing: COmbination of Black box and white box is called Grey box testing.
Integration testing is an Grey Box Testing which includes both the functionality and coding testing.