Your First iOS & SwiftUI App: An App from Scratch

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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.

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func testScorePositive() {
  var guess = game.target + 5
  var score = game.points(sliderValue: guess)
}

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  XCTAssertEqual(score, 95)

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

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