#gotocph @thejayfields @thejayfields JUnit version 4.11 ......... - PowerPoint PPT Presentation

#gotocph @thejayfields

@thejayfields JUnit version 4.11 .........

@thejayfields JUnit version 4.11 .......................................................E.E..

@thejayfields JUnit version 4.11 .E.E.. There were 2 failures: 1) statement(CustomerTest) org.junit.ComparisonFailure: expected:<...or John Godfather 4[ ]9.0 Amount owed is 9...> but was:<...or John Godfather 4[ ]9.0 Amount owed is 9...> 2) htmlStatement(CustomerTest) org.junit.ComparisonFailure: expected:<...</h1> <p>Godfather 4[ ]9.0</p> <p>Amount ow...> but was:<...</h1> <p>Godfather 4[ ]9.0</p> <p>Amount ow...> FAILURES!!! Tests run: 4, Failures: 2

@thejayfields

1. statement()

2. customer[]

3. Customer Assignment

4. Digest setup

5. Object mother

6. OBJECT Mother customer variations

7. expected string building

8. rentalInfo()

9. rentalinfo implemtation

10. find and digest expstatement()

@thejayfields why?

@thejayfields we write tests we don’t need with time we don’t have to satisfy people we don’t like.

@thejayfields To create a tiny universe where the software exists to do one thing and do it well. -- @delitescere

@thejayfields motivators? enable refactoring, immediate feedback, and breaking a problem up into smaller pieces

@thejayfields DRY

@thejayfields Suite / Fixture / Test

Testing unrelated customers

Creating unrelated customers

overextracting

relevant data only

one: replace loop with individual tests

@thejayfields It’s only after we’ve duplicated everything that we’re free to dry anything

@thejayfields two: expect literals

@thejayfields

@thejayfields three: inline setup

@thejayfields

@thejayfields Motivators

@thejayfields validate the system feedback prevent regression

@thejayfields code coverage

@thejayfields enable refactoring

@thejayfields document the system

@thejayfields manager told you to

@thejayfields tdd break up a problem improved design

@thejayfields customer acceptance

@thejayfields Any fool can write a test that helps them today. Good programmers write tests that help the entire team in the future.

what can we do?

This is your career and it’s ending one test suite run at a time

@thejayfields a simple rule 1. never cross boundaries 2. the Class Under Test should be the only concrete class found in a test

@thejayfields two simple rules 1. never cross boundaries 2. the Class Under Test should be the only concrete class found in a test

@thejayfields

Confidence

isolation

integration

@thejayfields

@thejayfields how else can I improve the test suite?

@thejayfields

self destruction

Our tests are failing us

Poor SoluTion or Poor Solution

#gotocph @thejayfields @thejayfields JUnit version 4.11 ......... - PowerPoint PPT Presentation

#gotocph @thejayfields @thejayfields JUnit version 4.11 ......... @thejayfields JUnit version 4.11 .......................................................E.E.. @thejayfields JUnit version 4.11 .E.E.. There were 2 failures: 1)

#gotochicago @thejayfields Tuesday, May 12, 15 @thejayfields JUnit version 4.11 .........

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