TMM and the testing process

1
TMM and the testing process

• Setting the context

2
Testing process in context

• Software process
• phases
• procedures
• steps
• roles / organization
• Testing is a subprocess
• Validation process of evaluating a unit to
  determine whether it satisfies specified
  requirements
• are we building the right product?
• Verification process of evaluating whether the
  unit developed in a phase satisfy conditions
  imposed
• are we building the product right?

3
Testing in this context

• Two definitions of testing
• A) Testing is a group of procedures carried out
  to evaluate some aspect of software
• B) Testing is a process used for revealing
  defects in software and establishing that it has
  attained a specified degree of quality with
  respect to selected attributes

4
Contrast to common definition

• Another, common, definition is
• C) Testing is the process of showing that the
  system works
• Contrast this to
• B) Testing is a process used for revealing
  defects in software
• A) Testing is a group of procedures carried out
  to evaluate some aspect of software

5
Psychology

• Humans are goal oriented.
• We want success and rewards and avoid
  failures...
• testing system works
• success by a few harmless test cases of low
  quality
• testing defects found
• success by high quality, devilish smart, test
  cases

6
Yet another definition

• At the dAPF course we worked a lot with TDD
• Test-Driven Development
• Can you come up with another definition of
  testing that is the heart of TDD?

7
A proposal

• TDD
• Testing is a process that conservatively drives
  the development of production code.

8
Testing Levels

• The V-model
• Basically a waterfall
• Defines levels of testing
• unit test
• integration test
• system test
• Exercise
• Relate to agile methods

9
Testing Maturity Levels

• Burnsteins hobbyhorse
• testing processes
• classification of maturity