Test in the large

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Test in the large

  1. 1. Testing In the Large Saranya.V AP/CSE,Sri Vidya College of Engineering & Technology, Virudhunagar
  2. 2. Small to BigIn the Small to In the Large  First test the individual component level. (known as testing in the small”.  After testing all the components are slowly integrated and tested at each level of integration.  Finally the fully integrated system is tested.  “Integration & System Testing” are known as testing in the large.
  3. 3. Types1. Bottom Up testing2. Top Down Testing3. Big Bang Testing4. Sandwich Testing
  4. 4. 1. Bottom Up Testing• Starting from detailed modules.• Testing starts from the detailed modules and proceeds up to the higher levels of hierarchy.• Testing need drivers.• Some modules may not be tested separately.
  5. 5. 2. Top Down Testing• System developed starting from most general modules.• Testing starts from the most general module.• Testing requires stubs.• May not be tested separately
  6. 6. 3. Big Bang Testing• All modules integrated A in a single step and B tested as an entire system. C ABCDE D E
  7. 7. 4. Sandwich Testing Modules Top down• Testing combines the testing idea of bottom up and M1 M2 top down testing.• Fix the target layer in M3 M4 M5 M6 the hierarchy of the modules. Bottom up testing

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