Your First iOS & SwiftUI App: An App from Scratch

Feb 13 2023 Swift 5.7, iOS 16, Xcode 14

Part 3: Coding in Swift

23. Intro to Test-Driven Development

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Previous episode: 22. Intro to Unit Testing Next episode: 24. Challenge: How to Calculate the Difference

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This video Intro to Test-Driven Development was last updated on Feb 13 2023

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Now that you understand the basics of Unit Testing, I want to introduce you to a way of writing apps that some developers enjoy: Test-Driven Development.

func testScorePositive() {
  var guess = game.target + 5
  var score = game.points(sliderValue: guess)
}
  XCTAssertEqual(score, 95)
func testScoreNegative() {
  var guess = game.target - 5
  var score = game.points(sliderValue: guess)
  XCTAssertEqual(score, 95)
}