1st lecture on software testing given to KTU students. September 2015
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The document provides an overview of software testing including: - A brief history of software testing from the 1950s to present day highlighting the development of key testing methods and trends. - Estimates that global spending on software testing will reach €100 billion by 2014 and independent testing services will exceed $30 billion by 2015. - Examples of expensive software mistakes due to failures to properly test including military and medical system errors costing lives. - An outline of different "schools" of software testing methodology including analytical, factory, context-driven, and others.
1st lecture on software testing given to KTU students. September 2015
- 1. Sergejus Bartoš sergejus.bartos@devbridge.com Introduction to Software Testing
- 2. What is testing profession about? What is testing industry? What is the history of testing? What are the testing trends, schools, etc.? What is a career path for testers?
- 3. When is theTesters day? http://blog.jetbrains.com/youtrack/2010/09/happy-testers-day/
- 4. What is $$$ in software testing? Pierre Audoin Consultants has forecasted the software testing spends to hit Euro 100 billions by 2014. IDC and Gartner forecast that the enterprise spending on independent testing services would cross the benchmark USD 30 billions (Euro 25 billions) by 2015. Lithuanian GDP 2014 is about Euro 36 billions (www.vz.lt).
- 5. Some Expensive Software Mistakes • Mariner Bugs Out (1962), Cost: $18.5 million Disaster:The Mariner 1 rocket with a space probe headed forVenus diverted from its flight path shortly after launch. • WorldWar III…Almost (1983), Cost: Nearly all of humanity Disaster:The Soviet early warning system falsely indicated the United States had launched five ballistic missiles • Patriot Fails Soldiers (1991),Cost: 28 soldiers dead, 100 injured. Disaster: During the first Gulf War, an American Patriot Missile system in Saudi Arabia failed to intercept an incoming Iraqi Scud missile. • CancerTreatment to Die For (2000), Cost: Eight people dead, 20 critically injured. http://top-100s.blogspot.com/2009/05/10-most-expensive-software-blunders.html
- 8. History – before 1970 1958 – First independentTestTeam at IBM 1960s: Testing is mentioned in “Computer Programming Fundamentals” book by JerryWeinberg as separated from debugging. Some of theTesting methods whitepapers are published (IBM, 1967) NATO report mentions Software Quality (1968)
- 9. History – 1970’s Equivalence Classes, Boundaries, Error Guessing, Cause/Effect Graphing, Cyclomatic complexity, Quality metrics, structure based testing, code inspections…
- 10. History – 1980’s Test Cases;V-Model System/Integration/Unit, Code, Branch, Input Coverage Metrics IEEE 829 ExploratoryTesting introduced by Cem Kaner (1988) Black-box and White-box testing techniques are defined
- 11. History – 1990’s Record-play software (Winrunner) First Star conference (1992, LasVegas) First EuroStar conference (1993, London) Tmap published (1995) ISEB certification created (1998) James Bach – Context DrivenTesting (1999)
- 12. History – 2000’s James Bach – Rapid SoftwareTesting, Session Based Testing ISTQB founded (2002) IBM RationalTester (2002), Selenium (2004) "Schools of SoftwareTesting“, 2003 - Bret Pettichord uTest – crowdsourcing, 2008
- 13. Our Days AcceptanceTest Driven Development (ATDD) Behavior DrivenTesting (BDT)
- 14. Schools of SoftwareTesting http://www.testingeducation.org/conference/wtst_pettichord_FSofST2.pdf Analytical School (structural testing) Factory School (requirement traceability) QA School (gatekeeping over testing) Context Driven School
- 15. ISTQB By 2015: Over 400 000 certificates (13 000 growth per quarter) In 100 countries
- 16. What are the Names? Tester QA Test Analyst Test Engineer
- 17. What SoftwareTester Does? Breaks things? “Monkey testing”? Writes unit tests? Writes automated scripts? Finds and report errors?
- 18. What software tester does? Software tester does not make software but makes it better. But what is the job?
- 19. What is software testing about ? Software testing is a process of executing a program or application with the intent of finding the software bugs. (ISTQB) The principle objective of software testing is to give confidence in the software. (Unknown Author) Software testing is an investigation conducted to provide stakeholders with information about the quality of the product or service under test. (Bertrand Meyer)
- 22. “Testing is improving the world one bug at a time.” “Testing is like fishing but you get paid.”