Effective Test Cases & Introduction to Hexawise

Effective Test Cases & Introduction to Hexawise

• 1.
  Effective Test Cases& Introduction to Hexawise By Nilenth Selvaraja
• 2.
  What is aTestCase? IEEE Standard 610 (1990) defines test case as follows: “A set of test inputs, execution conditions, and expected results developed for a particular objective, such as to exercise a particular program path or to verify compliance with a specific requirement.” Also (IEEE Standard 829-1983) defines it as “ Documentation specifying inputs, predicted results, and a set of execution conditions for a test item.” Ron Patton (2001, p. 65) “Test cases are the specific inputs that you’ll try and the procedures that you’ll follow when you test the software.”
• 3.
  Characteristics of EffectiveTestCases • Title is short and descriptive. • Test case corresponds with the requirements. • Preconditions, steps and expected results are as transparent as possible. • Test case supports maintaining, update and can be re-used in the future. Most Important of all • Covering the most area of testing with less number of test cases.
• 4.
  Factors affecting test-caseeffectiveness
• 5.
  How to correctfactors effecting test case effectiveness • Verify completeness of test specifications which can be done by revisiting and revising functional specifications, which results in revising test case specifications. • Verify coverage of test-cases by the use of traceability matrix to meet coverage needs of the project – ensures that test cases meet business rule. • Understand reasons for missed defects & training testers on proper way to execute tests and verifying test results. • Using tools that are helpful to cover a maximum area with less test cases.
• 7.
  What is Hexawise? Someof the most challenging questions testing teams are asked include: • Are we testing enough? • Are we testing too much? • What is the level of testing coverage these tests achieve? • What if we get extremely pressed for time…What level of coverage could we achieve in half as many tests as we have planned? Hexawise is a test designing tool which allows you to visualize testing coverage more precisely.
• 8.
  Why use Hexawise? •Hexawise is mainly used to select test conditions and document test scripts. • Hexawise also improves test execution efficiency and effectiveness.The tests you generate with Hexawise are more powerful than the tests you would select by hand. • Tests generated using Hexawise are optimized to: -Be varied as possible. -Minimize wasteful repetition. -Maximize test coverage in a manageable number of tests.
• 9.
  DEMO • Sign up,Log in & creating a new plan • Marking valid and invalid pairs • Create tests • Analyze tests feature • Export tests • Auto Script feature • Copy & Share Plans
• 10.
  UNDERSTANDING INTERACTIONS
• 11.
  Each of theend points on this mind map (like “Fast” and “Spin”) are parameter values.
• 12.
  In Hexawise it’srepresented this way
• 13.
  What is 2way interactions? When you click on the “Create Tests” button Hexawise generates a set of 2-way tests that contains every single pair of those test parameter values in at least one of the tests.
• 14.
  Every single pairof parameter values appears together in at least one of these six test cases:
• 16.
  It is anextremely efficient way to find defects given that: • Studies show that 84% of defects in production could have been found by testing for every pair of parameter values and • 2-way coverage can be achieved in a relatively small number of tests.
• 17.
  But what aboutcoverage of combinations involving 3 or more parameter values? • Sometimes, a specific combination of 3 values will be included in your set of 2-way tests. • Other times, combinations of 3 values will not be included in your set of tests. Let’s look at a few examples.
• 19.
  These 3-way testscontain at least one test for every triple.
• 20.
  Studies show that95% of defects in production could have been found by testing using 3-way coverage.
• 21.
  THANK YOU!