TP 4A 2020-21: Text generator with Markov's chains

Questions

1. Fork this github repository (2 points)
2. Run the project
3. Comment the 3 classes: MarkovApp, MarkovChain & MarkovData (3 points)
4. Commit your changes and check-it into github
5. On github, make a pull request (1 point)
6. Complete the next section: "Analyze IADT functions" into this file (2 points)
7. Commit your changes (commit README.md)
8. On github, update your pull request (1 point)
9. Make tests defined into section: "Functions to test now" (call your test functions using the rule: GIVEN_WHEN_THEN) (10 points)
10. Check the test coverage with the Jacoco coverage report provided into: /target/site/jacoco/index.html
11. Commit your changes
12. On github, update your pull request (1 point)
13. that ends

Analyze IADT functions

Hereafter, for each classes give function to be tested. Remember that all functions does not have to be tested, some code can be checked by a simple inspection or an analyse, another code can be validated by definition (rules, etc) the others function can be tecsted by unit tests, integration tests or validation tests (IADT: Inspect, Analyse, Define, Test).

Validation Mode	Why ? When ?
I: Inspect	No test needed, just a simple static test (visual) on a subset of classes (commentaries, indentation, etc.)
A: Analyze	Not easy to test but the algorithm is well know and can be check by a static analyze
D: Def/Dem	You can Demonstrate the function or by Definition the function needs not test (generate code, call functions, etc.)
T: Test	the function can be easly test

Class app.MarkovApp

Function	I A D T	Comment
main
readFileAsString

Class markov.MarkovChain

Function	I A D T	Comment
MarkovChain
generateMarkov
learn
setRgen

Class markov.MarkovData

Function	I A D T	Comment
read
learnWord
renforceWord
Etc.

Functions to test now

Class markov.MarkovChain

public void learn(String text)
public String generateMarkov(int numWords)

Class markov.MarkovData

public void read(String text)
public boolean renforceWord(String keyString, String wordToLearn)

Tricks & tips

• Start with simple classes (models, libraries, etc) at the end make test into complex classes (classes with multiple relations)
• Never test auto generate code
• Never test creator (its a design problem)
• Use @Test before each testFunction !
• You can test a function than throws an exception with the argument: expected

@Test(expected=Exception.class)

Documentation and validation set

https://www.dcode.fr/chaine-markov-texte