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Describe the difference between unit testing and integration testing

written 8.7 years ago by teamques10 ★ 68k

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This question appears in Mumbai University > Software Testing & Quality Assurance Subject

Marks: 6M / 10 M

Year: Dec 2012, Dec 2013

software testing and quality assurance

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written 8.7 years ago by teamques10 ★ 68k

Difference between Unit Testing and Integration Testing :

Unit Testing	Integration Testing
1.Unit Testing is a method of testing that verifies the individual units of source code are working properly	1.Integration Testing is the phase of software testing in which individual software modules are combined and tested as a group.
2.Faster than integration testing. It should take less than half a second to run a unit test	2.Generally can be much slower than unit tests.
3.A unit test is done in (as far as possible) total isolation.	3.An integration test is done when the tested object or module is working like it should be, with other bits of code.
4.Unit test never fulfils the final functional requirements	4.This test will cover the functional requirements but not enough to ensure system validation.
5. The scope of testing is entirely within the software module	5.Testing is usually carried out after module level integration is done in software development.
6.Unit tests are comparatively easier to maintain.	6.Integration tests are hard to maintain.
7.Types of unit testing include static unit testing and dynamic unit testing.	7.Types of integration testing include incremental, Top down, Bottom up, sandwich and Big Bang approaches to testing.
8.It occurs before Integration and System Testing.	8.It occurs after Unit testing and,before System testing.

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