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13 Jan 2006


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PureUnity
Mathieu Bouchard matju@artengine.ca
January 13th, 2006
Abstract
This paper covers the theory behind PureUnity, 
PureData's test framework.
Table of Contents
1 What is testing?
    1.1 a test tests something that gets tested
    1.2 a triad of testing
2 Methodologies of Testing
    2.1 test-by-Proof
    2.2 test-by-Use
    2.3 test-by-Rule
    2.4 test-by-Example
3 Quelques cossins
    3.1 Protocol
    3.2 Preconditions
    3.3 Postconditions
    3.4 Wrapconditions
    3.5 Inheritance
    3.6 Aspect-programming and stuff
    3.7 Meta-abstractions
    3.8 Float-Signal Polymorphism
    3.9 Unit-Tests
    3.10 Algebraic Properties
    3.11 Temporal Logic
    3.12 TODO
1 What is testing?
1.1 a test tests something that gets tested
(write ontological nonsense here)
1.2 a triad of testing
I've thought of a triad:
A. "the real thing"
B. what it's documented as
C. a way to verify that (1) and (2) agree
and another one:
changing A to match B+C: programming
changing B to match A+C: the scientific method (aka 
reverse engineering)
changing C to match A+B: unit-tests and contracts and 
scientific experiments
2 Methodologies of Testing
I once called unit-tests "test-by-example" and 
contracts "test-by-rule". I think that those names are 
preferable to the more common names. I also hadlisted 
"test-by-use" which is to use the software in practice: 
this may include testing a component A using the unit 
tests for B because B uses A.The last I had listed was 
"test-by-proof", which is rarer and is the only one 
that requires analysing the implementation.
2.1 test-by-Proof
2.2 test-by-Use
2.3 test-by-Rule
2.4 test-by-Example
3 Quelques cossins
3.1 Protocol
3.2 Preconditions
3.3 Postconditions
3.4 Wrapconditions
3.5 Inheritance
3.6 Aspect-programming and stuff
3.7 Meta-abstractions
3.8 Float-Signal Polymorphism
3.9 Unit-Tests
3.10 Algebraic Properties
3.11 Temporal Logic
3.12 TODO