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Jan Van Ryswyck profile picture

Jan Van Ryswyck

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

Location Brecht Joined Joined on  Personal website https://principal-it.be github website

Work

Software craftsman at Principal IT

Contract Tests - Parameterised Test Cases

Contract Tests - Parameterised Test Cases

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4 min read
Contract Tests - Abstract Test Cases

Contract Tests - Abstract Test Cases

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4 min read
Contract Tests

Contract Tests

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3 min read
The Testing Quadrant

The Testing Quadrant

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3 min read
Tales Of TDD: The Big Refactoring

Tales Of TDD: The Big Refactoring

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5 min read
Implementing Approval Tests For PDF Document Generation

Implementing Approval Tests For PDF Document Generation

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4 min read
Approval Tests For PDF Document Generation

Approval Tests For PDF Document Generation

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5 min read
Ignoring Tests

Ignoring Tests

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5 min read
Writing Maintainable Unit Tests In Print

Writing Maintainable Unit Tests In Print

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1 min read
Tales Of TDD - The Case Of Overused Test Doubles

Tales Of TDD - The Case Of Overused Test Doubles

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5 min read
Book Launch: Writing Maintainable Unit Tests

Book Launch: Writing Maintainable Unit Tests

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2 min read
Avoid Inheritance For Test Classes

Avoid Inheritance For Test Classes

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4 min read
How To Write Unit Tests For Logging

How To Write Unit Tests For Logging

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4 min read
Prevent domain knowledge from sneaking into solitary tests

Prevent domain knowledge from sneaking into solitary tests

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3 min read
Why Solitary Tests Should Be Easy To Read

Why Solitary Tests Should Be Easy To Read

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3 min read
Tales Of TDD - Stressed And Always In A Hurry

Tales Of TDD - Stressed And Always In A Hurry

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5 min read
Dealing With Date/Time In Solitary Tests

Dealing With Date/Time In Solitary Tests

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4 min read
Announcing Book: Writing Maintainable Unit Tests

Announcing Book: Writing Maintainable Unit Tests

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1 min read
Only Test Through Public Interfaces

Only Test Through Public Interfaces

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3 min read
Inside-Out and Outside-In TDD

Inside-Out and Outside-In TDD

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4 min read
Test Double Heuristics

Test Double Heuristics

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4 min read
Excessive Specification of Test Doubles

Excessive Specification of Test Doubles

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2 min read
The Boundaries of Solitary Tests

The Boundaries of Solitary Tests

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7 min read
Test Doubles

Test Doubles

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10 min read
Indirect Inputs and Outputs

Indirect Inputs and Outputs

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4 min read
State versus Behaviour Verification

State versus Behaviour Verification

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5 min read
Cascading Failures

Cascading Failures

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7 min read
The Designing versus Testing Mindset

The Designing versus Testing Mindset

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2 min read
Why Write Maintainable Unit Tests?

Why Write Maintainable Unit Tests?

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3 min read
Writing Maintainable Unit Tests

Writing Maintainable Unit Tests

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1 min read
The Test Pyramid

The Test Pyramid

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3 min read
A Taxonomy Of Tests

A Taxonomy Of Tests

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3 min read
Do-nothing Scripting

Do-nothing Scripting

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1 min read
Switched From Opera to Vivaldi

Switched From Opera to Vivaldi

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1 min read
Fast Feedback

Fast Feedback

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4 min read
Debugability Considered Useful

Debugability Considered Useful

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3 min read
Blaming Mocks For Bad Design

Blaming Mocks For Bad Design

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4 min read
Listening to the Vital Signs of TDD

Listening to the Vital Signs of TDD

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6 min read
All in the Name of DRY

All in the Name of DRY

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4 min read
Memo on O-Ring and Software Erosion

Memo on O-Ring and Software Erosion

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3 min read
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