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General Testing Background

General Testing Background. CISC 879 Spring 2007 Lori Pollock. Key Points. * Software Testing versus Debugging? * Static versus Dynamic Testing? * Error -> Fault -> Failure - Not one-to-one * What is a bug? Error or Fault. * Kinds of faults: incorrect implementation vs

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General Testing Background

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  1. General Testing Background CISC 879 Spring 2007 Lori Pollock

  2. Key Points * Software Testing versus Debugging? * Static versus Dynamic Testing? * Error -> Fault -> Failure - Not one-to-one * What is a bug? Error or Fault. * Kinds of faults: incorrect implementation vs omission vs surprise

  3. Test Cases • For a given Implementation under test (IUT): • Pretest state • Test inputs or conditions • Expected outputs IUT: method, object, class, component, system  Levels of Testing: unit testing, integration testing, system testing Interesting test case – good chance of revealing a fault. Test Strategy – heuristic/algorithm to create test cases Test Design – create a test suite with a test strategy

  4. Application Representation Test Case Generator Test Cases Application Implementation Test Cases Replay Tool Actual Results Expected Results Pass/ Fail Oracle Traditional Software Testing Process Application Specification

  5. Kinds of Testing 1. Fault-directed: intended to reveal faults through failures (unit/integration) 2. Conformance-based: intended to show conformance with required capabilities (system) Today’s paper and talks – test designs

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