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Jan Van Ryswyck

Owner @ Principal IT, husband, father of three, geek, enjoys running, fan boy of many things but nothing in particular.

Brecht Joined on Sep 1, 2019 https://principal-it.be

Work

Software craftsman at Principal IT

Jan Van Ryswyck

Apr 23

Writing Maintainable Unit Tests In Print

#books #tdd #unittests #softwaredesign

1 min read

Jan Van Ryswyck

Mar 31

Tales Of TDD - The Case Of Overused Test Doubles

#unittests #tdd #testing #softwaredesign

5 min read

Jan Van Ryswyck

Feb 17

Book Launch: Writing Maintainable Unit Tests

#books #tdd #unittests #softwaredesign

2 min read

Jan Van Ryswyck

Jan 6

Avoid Inheritance For Test Classes

#unittests #tdd #testing #softwaredesign

4 min read

Jan Van Ryswyck

Nov 11 '20

How To Write Unit Tests For Logging

#unittests #tdd #testing #softwaredesign

4 min read

Jan Van Ryswyck

Sep 30 '20

Prevent domain knowledge from sneaking into solitary tests

#unittests #tdd #testing #softwaredesign

3 min read

Jan Van Ryswyck

Sep 9 '20

Why Solitary Tests Should Be Easy To Read

#unittests #tdd #testing #softwaredesign

3 min read

Jan Van Ryswyck

Aug 19 '20

Tales Of TDD - Stressed And Always In A Hurry

#unittests #tdd #testing #softwaredesign

5 min read

Jan Van Ryswyck

Aug 4 '20

Dealing With Date/Time In Solitary Tests

#unittests #tdd #testing #softwaredesign

4 min read

Jan Van Ryswyck

Jul 15 '20

Announcing Book: Writing Maintainable Unit Tests

#books #tdd #unittests #softwaredesign

1 min read

Jan Van Ryswyck

Jul 1 '20

Only Test Through Public Interfaces

#unittests #tdd #testing #softwaredesign

3 min read

Jan Van Ryswyck

Jun 17 '20

Inside-Out and Outside-In TDD

#unittests #tdd #testing #softwaredesign

4 min read

Jan Van Ryswyck

Jun 3 '20

Test Double Heuristics

#unittests #tdd #testing #softwaredesign

4 min read

Jan Van Ryswyck

May 20 '20

Excessive Specification of Test Doubles

#unittests #tdd #testing #softwaredesign

2 min read

Jan Van Ryswyck

May 5 '20

The Boundaries of Solitary Tests

#unittests #tdd #testing #softwaredesign

7 min read

Jan Van Ryswyck

Apr 8 '20

Test Doubles

#unittests #tdd #testing #softwaredesign

10 min read

Jan Van Ryswyck

Apr 1 '20

Indirect Inputs and Outputs

#unittests #tdd #testing #softwaredesign

4 min read

Jan Van Ryswyck

Mar 25 '20

State versus Behaviour Verification

#unittests #tdd #testing #softwaredesign

5 min read

Jan Van Ryswyck

Mar 18 '20

Cascading Failures

#unittests #tdd #testing #softwaredesign

7 min read

Jan Van Ryswyck

Mar 11 '20

The Designing versus Testing Mindset

#unittests #tdd #testing #softwaredesign

2 min read

Jan Van Ryswyck

Mar 4 '20

Why Write Maintainable Unit Tests?

#unittests #tdd #testing #softwaredesign

3 min read

Jan Van Ryswyck

Feb 26 '20

Writing Maintainable Unit Tests

#tdd #testing #softwaredesign #training

1 min read

Jan Van Ryswyck

Nov 7 '19

The Test Pyramid

#tdd #testing #softwaredesign

3 min read

Jan Van Ryswyck

Oct 8 '19

A Taxonomy Of Tests

#tdd #testing

3 min read

Jan Van Ryswyck

Sep 9 '19

Do-nothing Scripting

#devops #automation #scripting

1 min read

Jan Van Ryswyck

Sep 5 '19

Switched From Opera to Vivaldi

#privacy #security

1 min read

Jan Van Ryswyck

Sep 10 '19

Fast Feedback

#tdd #swdesign #clojure #architecture

4 min read

Jan Van Ryswyck

Sep 10 '19

Debugability Considered Useful

#swdesign #architecture

3 min read

Jan Van Ryswyck

Sep 10 '19

Blaming Mocks For Bad Design

#tdd #architecture #swdesign

4 min read

Jan Van Ryswyck

Sep 10 '19

Listening to the Vital Signs of TDD

#tdd #architecture #swdesign

6 min read

Jan Van Ryswyck

Sep 10 '19

All in the Name of DRY

#swdesign #architecture

4 min read

Jan Van Ryswyck

Sep 10 '19

Memo on O-Ring and Software Erosion

#career #coreskills

3 min read

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