POC and POO

Point of Control (POC): Point of control is the point at which test objects are supplied with test data.

Point of Observation (POO): Point of observation is the point at which test objects are logged and investigated.

In Black box testing the Point of observation is outside the test object, and Point of control is also situated at outside the test object. Here test object it can be your module/component, System .In Black box testing as you know you can’t see internal behaviour of the test object. So that why the POC and POO situated outside the test object. In black box testing the Point of control are appropriate test input data, appropriate test precondition. The Point of Observation is output, result.

In white box testing the Point of observation and Point of control is situated inside the test object. Here Test object can be source code, design, and requirements. In white box testing as you know that you can see internal working of code. Here internal processing of test object as well as output is analysed that’s nothing but Point of observation .and Point of control is also located inside the test object .The POO and POC is one of the white box testing technique.