Statement Testing and Statement Coverage. ISTQB whitebox techniques with TestCompetence

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Statement Testing and Statement Coverage. ISTQB whitebox techniques with TestCompetence

  1. 1. Statement Testing and Statement Coverage withPrepare yourself for the ISTQB exam
  2. 2. Dictionarystatement: an entity in a programming language, which is typicallythe smallest indivisible unit of execution.statement testing: a white box test design technique in whichtest cases are designed to execute statements.statement coverage: the percentage of executable statementsthat have been exercised by a test suite.executable statement: a statement which, when compiled, istranslated into object code, and which will be executed procedurallywhen the program is running and may perform an action on data.code coverage: an analysis method that determines which partsof the software have been executed (covered) by the test suite andwhich parts have not been executed, e.g. statement coverage,decision coverage or condition coverage. From „Standard glossary of terms used in Software Testing” Copyright © 2013
  3. 3. What is…?Statement coverage is the assessmentof the percentage of executablestatements that have been exercised by atest case suite.Statement testing derives test cases toexecute specific statements, normally toincrease statement coverage. From „Certified Tester Foundation Level Syllabus (version 2011)”Copyright © 2013
  4. 4. Rules100% branch coverage implies both 100%decision coverage and 100% statementcoverage. From „Certified Tester Foundation Level Syllabus (version 2011)”Copyright © 2013
  5. 5. Examples with sequential codea = b + cd = e * e In order to cover all statements, you need 1 test case.Copyright © 2013
  6. 6. Examples with IFIF (wa){ ev = ghd - pkq / cds; In order to cover all} statements, you need 1 test case.Copyright © 2013
  7. 7. Examples with IF ELSEIF (weu){ i = o - f; In order to cover all} statements, you needELSE 2 test cases.{ u = gkt * k;}Copyright © 2013
  8. 8. Examples with SWITCHSWITCH (yc){ CASE 0: In order to cover all epl = o / c; statements, you need break; 4 test cases. CASE 1: p = wt * bd; break; CASE 2: fbt = xg + ana - cs; break; DEFAULT: qxn = q / ti; break;}Copyright © 2013
  9. 9. Examples with WHILEa = 1;WHILE (a < 5){ In order to cover all b = c; statements, you need a++; 1 test case.}Copyright © 2013
  10. 10. Examples with DO WHILEDO{ a = a + 1} WHILE (a <= 0) In order to cover all statements, you need 1 test case.Copyright © 2013
  11. 11. Examples with FORFOR (a = 5; a > -5; a--){ b = c + 1; In order to cover all} statements, you need 1 test case.Copyright © 2013
  12. 12. More examplesIF (a){ b = c + d; In order to cover all} statements, you needELSE 2 test cases.{ IF (e) { b = c - d; }}Copyright © 2013
  13. 13. More examplesIF (a){ IF (f) In order to cover all { statements, you need g = h - i; 2 test cases. }}ELSE{ IF (e) { b = c - d; }}Copyright © 2013
  14. 14. More examplesSWITCH (a){ CASE 0: IF (b) In order to cover all { statements, you need c; 3 test cases. } break; CASE 1: IF (d) { e; } ELSE { f; } break;}Copyright © 2012
  15. 15. More examples with…TestCompetence allows you to generate sample pseudocode to pracitse whiteboxtechniques including statement coverage… Copyright © 2013
  16. 16. More examples with…TestCompetence allows you to generate sample pseudocode to pracitse whiteboxtechniques including statement coverage… Choose the maximum number of Choose the instructions level of per level. nested statements. Choose the type of Choose the coverage type of from: statement. statement, decision, codition, multiple condition, GENERATE and modified your exercise. condition. Copyright © 2013
  17. 17. More examples with…You get pseudocode and sample answers just like during a regular ISTQB exam.Choose the right answer. Pseudocode Choose an answer. Copyright © 2013
  18. 18. More examples with…You get pseudocode and sample answers just like during a regular ISTQB exam.Choose the right answer. Pseudocode Your answer Right answer Copyright © 2013
  19. 19. How to get it…Visit TestCompetence.com and get one for only… EURO / USD Unlimited number of exercises during 24 hours!Copyright © 2013
  20. 20. Check also examples for…• Decision testing and coverage >>• Condition testing and coverage >>• Multiple condition testing and coverage >>• Modified condition decision combination (MC/CD) coverage >> Copyright © 2013

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