The Art of Unit Testing, with examples in C#

294 Pages·2014·14.16 MB·English

by  Roy Osherove

the art of
with examples in C#
SECOND EDITION
FOREWORDS BY
Michael Feathers
Robert C. Martin
R O
M A N N I N G OY SHEROVE
The Art of Unit Testing, Second Edition
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The Art of Unit Testing
Second Edition
WITH EXAMPLES IN C#
ROY OSHEROVE
MANNING
SHELTER ISLAND
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ISBN: 9781617290893
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To Tal, Itamar, Aviv, and Ido. My family.
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brief contents
PART 1 GETTING STARTED . .....................................................1
1 ■ The basics of unit testing 3
2 ■ A first unit test 19
PART 2 CORE TECHNIQUES ....................................................47
3 ■ Using stubs to break dependencies 49
4 ■ Interaction testing using mock objects 75
5 ■ Isolation (mocking) frameworks 90
6 ■ Digging deeper into isolation frameworks 109
PART 3 THE TEST CODE .......................................................123
7 ■ Test hierarchies and organization 125
8 ■ The pillars of good unit tests 151
PART 4 DESIGN AND PROCESS ...............................................187
9 ■ Integrating unit testing into the organization 189
10 ■ Working with legacy code 207
11 ■ Design and testability 219
vii
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contents
foreword to the second edition xv
foreword to the first edition xvii
preface xix
acknowledgments xxi
about this book xxii
about the cover illustration xxvi
PART 1 GETTING STARTED . ..........................................1
1 The basics of unit testing 3
1.1 Defining unit testing, step by step 4
The importance of writing good unit tests 5 ■ We’ve all written
unit tests (sort of) 5
1.2 Properties of a good unit test 6
1.3 Integration tests 7
Drawbacks of nonautomated integration tests compared
to automated unit tests 9
1.4 What makes unit tests good 11
1.5 A simple unit test example 11
1.6 Test-driven development 14
ix
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