Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Unit Testing in Swift
Search
DAloG
March 19, 2016
Programming
2
360
Unit Testing in Swift
DAloG
March 19, 2016
Tweet
Share
More Decks by DAloG
See All by DAloG
State normalization (RU)
dalog
0
190
Redux + MQTT
dalog
1
780
От задач к проблемам
dalog
1
260
Unlimited power of Data-Driven UI
dalog
4
640
Data-Driven View Controllers. Tips and Tricks
dalog
5
1.9k
2 years of Redux in iOS. Lessons learned
dalog
0
370
Why unidirectional architecture matter for iOS.
dalog
1
290
Mobile backend without REST
dalog
2
110
Self managed teams 101
dalog
0
150
Other Decks in Programming
See All in Programming
Strands Agents で実現する名刺解析アーキテクチャ
omiya0555
1
110
Android 15以上でPDFのテキスト検索を爆速開発!
tonionagauzzi
0
190
202507_ADKで始めるエージェント開発の基本 〜デモを通じて紹介〜(奥田りさ)The Basics of Agent Development with ADK — A Demo-Focused Introduction
risatube
PRO
6
1.4k
PHPカンファレンス関西2025 基調講演
sugimotokei
6
1.1k
プロダクトという一杯を作る - プロダクトチームが味の責任を持つまでの煮込み奮闘記
hiliteeternal
0
370
DMMを支える決済基盤の技術的負債にどう立ち向かうか / Addressing Technical Debt in Payment Infrastructure
yoshiyoshifujii
5
760
CEDEC 2025 『ゲームにおけるリアルタイム通信への QUIC導入事例の紹介』
segadevtech
2
750
ワープロって実は計算機で
pepepper
0
160
変化を楽しむエンジニアリング ~ いままでとこれから ~
murajun1978
0
670
React は次の10年を生き残れるか:3つのトレンドから考える
oukayuka
41
16k
リッチエディターを安全に開発・運用するために
unachang113
1
350
MySQL9でベクトルカラム登場!PHP×AWSでのAI/類似検索はこう変わる
suguruooki
1
280
Featured
See All Featured
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3.1k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
53
2.9k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
139
34k
Building Flexible Design Systems
yeseniaperezcruz
328
39k
Raft: Consensus for Rubyists
vanstee
140
7k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
31
1.3k
Code Review Best Practice
trishagee
69
19k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.8k
4 Signs Your Business is Dying
shpigford
184
22k
Balancing Empowerment & Direction
lara
1
530
Transcript
DO YOU WANT TO TALK ABOUT UNIT TESTIG IN SWIFT?
#itsat @daloog ¯\_(ϑ)_/¯ Alexey Demedetskiy Sigma Software
THANK YOU APPLE!
99% OF IOS APPS ARE SHIPPED WITH UNIT TESTING!
WORKOUT TIME!!
None
(˽°□°)˽Ɨ ˍʓˍ
ARE UNIT TESTS WORTH IT? HTTP://STACKOVERFLOW.COM/QUESTIONS/237000/IS- THERE-HARD-EVIDENCE-OF-THE-ROI-OF-UNIT-TESTING
TIME += 30% HTTP://COLLABORATION.CSC.NCSU.EDU/LAURIE/PAPERS/ TDDPAPERV8.PDF
DEFECTS -= 60% HTTP://RESEARCH.MICROSOFT.COM/EN-US/GROUPS/ESE/ NAGAPPAN_TDD.PDF
TESTS ARE GREAT!
!(ಠፅಠ!)
WHY WE ARE NOT RUBY?
None
1) MARKET HUSTLE
2) APPLE FRAMEWORKS
3) LACK OF EXPERTISE
4) OUTSOURCE
⌛ ➡
UNIT TESTS ARE WRITTEN BY DEVELOPERS.
None
TESTS ARE DEVELOPERS RESPONSIBILITY
DON’T SELL THEM WRITE THEM
WHY DO WE NEED TO WRITE TESTS?
1) REFACTORING
2) CONFIDENCE
3) CATCHING ERRORS
4) REGRESSION
➡❌➡⌨➡✅
HOW TO WRITE TESTS?
None
UNIT AS SMALLEST LOGIC CONTAINER
FUNCTION
INPUT ➡ OUTPUT
None
None
PURE FUNCTIONS
METHOD
MUTATION OF STATE
None
VOID ➡ VOID
INPUT ➡ OUTPUT
DOMAIN == CODOMAIN
ALL MY CODE IS FUNCTIONAL, WHERE EVERY FUNCTION TAKES ONE
ARGUMENT: ALL MY PROGRAM'S STATE.
OBJECT
None
DEPENDENCIES
TRANSITIVE DEPENDENCIES
None
INITIAL STATE
ORDER OF OPERATIONS
UNIT AS SMALLEST LOGIC CONTAINER
None
TESTS
GWT
GIVEN WHEN THEN
None
AAA
ARRANGE ACT ASSERT
None
SRV
SETUP RECORD VERIFY
FUNCTIONS - GWT
METHODS - AAA
OBJECTS - SRV
VALUE TESTS
BEHAVIOR TESTS
INTEGRATION TESTS
CLIENT TESTS
PYRAMID OF TESTS HTTP://TODDLITTLEWEB.COM/WORDPRESS/2014/06/23/ THE-TESTING-DIAMOND-AND-THE-PYRAMID-2/
None
None
TEST COVERAGE HTTP://MARTINFOWLER.COM/BLIKI/ TESTCOVERAGE.HTML
None
None
TESTS
None
SIDE EFFECTS
RETURN VALUE
FUNCTION CALL
STATE CHANGE
SIDE EFFECTS
None
SWIFT
DEPENDENCIES
STRUCT
INTERNAL
None
PROTOCOL
EXTERNAL
XCTEST
QUICK / NIMBLE HTTPS://GITHUB.COM/QUICK/QUICK
RECORDER HTTPS://GIST.GITHUB.COM/ALEXEYDEMEDETSKIY/ 7A148559C81472A314F7
None
SWIFT
None
None
HTTPS://GITHUB.COM/XNEKOIX/FUNTIONALMVP
HTTP://WWW.AMAZON.COM/WORKING-EFFECTIVELY- LEGACY-MICHAEL-FEATHERS/DP/0131177052
HTTP://WWW.AMAZON.COM/EXTREME-PROGRAMMING- EXPLAINED-EMBRACE-EDITION/DP/0321278658
QUESTIONS: @DALOOG
[email protected]
NOBIDON