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Software testing basic
Main contents
Why is testing necessary? What is testing? Test Design techniques Test level Test type How to write test case Bug tracker Some test management tools
Why is Testing necessary?
Different (Error-Defect-Failure) Bug life cycle Role of Testing
Why is Testing necessary?
Different (Error-Defect-Failure)• Error (mistake): human action that produces an incorrect
result + Mistake in analyzing+ Mistake in programing…• Defect (bug, fault): error is found by tester• Fail (Failure): when the implementation of the defects are
executed, failure occur in the system.
Why is Testing necessary?
Bug life cycle
Why is Testing necessary?
Role of Testing Identify defects Measure the software quality by:+ The number of defects found+ The number of test case run+ Passing test reduce failure or risk in system+ Failing test provide information to improve the quality of system
What is Testing?
Testing-Quality Assurance-Quality Control Different (Testing-Debugging) Different (Build version and Release version) Independent testing
What is Testing?
Testing-Quality Assurance (QA)-Quality Control(QC) QA: focus on process (define and improve the process) QC: focus on quality of product (finding defects) Testing is the activity of QC, includes activities:+ Verification: ensures that the product is built according to the requirements and design specification+ Validation: ensures that the product meets the user’s needs (customer’s needs)
What is Testing?
Different (Testing-Debugging) Testing:+ Find defects+ Retest bugs+ Tester tests Debugging:+ Identify the cause of bugs+ Repair code+ Programmer debugs
What is Testing?
Different (Build version and Release version) Build version: is a version of a software that is still in testing Release version: is a build version that is sent to the
customer (no longer in testing).
What is Testing?
Independent testing• Test is designed by a person wrote software• Test is designed by other people from development team• Test is designed by test team• Test is designed by different organization
Test Design Techniques
Static testing techniques Dynamic testing techniques
Test Design Techniques
Static testing techniques
Test Design Techniques
Dynamic testing techniques
Test LevelsWhat usersreally need
Requirements
Design
Code
Acceptance testing
System testing
Integration testing
Unit testing
Test Levels
Component/Unit testing Integration testing System testing Acceptance testing- Alpha testing: performed by customers at the developing
organization’s location- Beta testing: performed by customers at their own location
Test Types
Functional testing Non-Functional testing Maintenance testing
Test Types
Functional testing Requirement based testing Business process based testing
Test Types
Non-Functional testing Reliability Usability Efficiency Maintainability Portability Different (Performance testing, Load testing, Stress testing)- Performance (Time)- Load (User)- Stress (Hardware resource-CPU, RAM)
Test Types
Maintenance testing Re-testing and Regression testing
Test case
Test case
Tested date Closed date Closed version Tested version….
Bug tracker