Curated topic · 11 ARTICLES
Explore practical Testing articles grounded in clear explanations and engineering tradeoffs.
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Test Plans manage the tests to run and their execution conditions in .xctestplan files. This guide covers why schemes alone are insufficient, test selection, configurations, coverage, execution order, repetition, and xcodebuild integration.
Read article100% code coverage does not mean bug-free code. This article summarizes the practical 70–80% guideline and how to identify untested branches that matter more than the number.
Read articleFor legacy code, characterization tests that lock in current behavior come before refactoring. This guide lays out the practical sequence for using seams to isolate code that cannot be tested because of dependencies.
Read articleIn Swift 5.5 and later, declare test functions as async, await the result, and then verify it. This guide also covers error validation, testing legacy callback APIs, and when expectations are still needed.
Read articleWhen writing test code for iOS development, XCTest can start to feel restrictive.
Read articleHave you ever written tons of test code, only to miss the actual bugs—and watch tests break everywhere whenever you fix a feature?
Read articleThere’s a wall every developer eventually runs into.
Read article"Write tests first? There isn't even any code yet—what would I test?"
Read articleIn iOS development, you may keep putting off writing test code. Once you open XCTest, it can be hard to know where to start.
Read articleHave you ever spent all night stuck because a Singleton made testing impossible?
Read article"When am I supposed to write all this...?" Even building one feature is a rush, so being asked to write tests too can honestly make you sigh.
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