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WWDC22 · 22 min · Essentials / Developer Tools

Author fast and reliable tests for Xcode Cloud

Discover how you can create effective testing plans for Xcode Cloud, Apple’s continuous integration and continuous delivery service. We’ll show you how testing can be an essential tool to consistently verify your code works correctly. Learn how you can author fast, reliable, and efficient tests for Xcode Cloud, avoid irrelevant failures, and verify your code changes quickly.

Watch at developer.apple.com ↗

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Code shown on screen · 10 snippets

setUp() swift · at 3:37 ↗ 
override func setUp() async throws {

}
setUp() example swift · at 3:46 ↗ 
var truck: Truck!

override func setUp() async throws {
    let directoryURL = FileManager.default.temporaryDirectory
    let fileName = UUID().uuidString
    let fileURL = directoryURL.appendingPathComponent(fileName, isDirectory: false)
    let data = await mockDonutMenuData()
    try data.write(to: fileURL)
    truck = Truck(menuURL: fileURL)
}
Environment variable example swift · at 5:55 ↗ 
var truck: Truck!

func testOrderDonut() throws {
    let host = ProcessInfo.processInfo.environment["BASE_URL"]

    let expectation = XCTestExpectation(description: "Order donut")
    truck.order(with: .sprinkles, host: host) { error, donut in
        XCTAssertTrue(donut.hasSprinkles)
        expectation.fulfill()
    }       
    wait(for: [expectation], timeout: 5)
}
XCTSkip example swift · at 6:00 ↗ 
var truck: Truck!

func testOrderDonut() throws {
    let host = ProcessInfo.processInfo.environment["BASE_URL"]
    try XCTSkipIf(host == "prod.example.com")

    let expectation = XCTestExpectation(description: "Order donut")
    truck.order(with: .sprinkles, host: host) { error, donut in
        XCTAssertTrue(donut.hasSprinkles)
        expectation.fulfill()
    }       
    wait(for: [expectation], timeout: 5)
}
XCTSkip example swift · at 8:18 ↗ 
var truck: Truck!

func testOrderDonut() throws {
    let host = ProcessInfo.processInfo.environment["BASE_URL"]
    try XCTSkipIf(host == "prod.example.com")

    let expectation = XCTestExpectation(description: "Order donut")
    truck.order(with: .sprinkles, host: host) { error, donut in
        XCTAssertTrue(donut.hasSprinkles)
        expectation.fulfill()
    }       
    wait(for: [expectation], timeout: 5)
}
XCTestExpectation example swift · at 8:48 ↗ 
var truck: Truck!

func testOrderDonut() throws {
    let host = ProcessInfo.processInfo.environment["BASE_URL"]
    try XCTSkipIf(host == "prod.example.com")

    let expectation = XCTestExpectation(description: "Order donut")
    truck.order(with: .sprinkles, host: host) { error, donut in
        XCTAssertTrue(donut.hasSprinkles)
        expectation.fulfill()
    }       
    wait(for: [expectation], timeout: 5)
}
Increase XCTestExpectation example swift · at 8:59 ↗ 
var truck: Truck!

func testOrderDonut() throws {
    let host = ProcessInfo.processInfo.environment["BASE_URL"]
    try XCTSkipIf(host == "prod.example.com")

    let expectation = XCTestExpectation(description: "Order donut")
    truck.order(with: .sprinkles, host: host) { error, donut in
        XCTAssertTrue(donut.hasSprinkles)
        expectation.fulfill()
    }       
    wait(for: [expectation], timeout: 10)
}
Async/await example swift · at 9:16 ↗ 
var truck: Truck!

func testOrderDonut() async throws {
    let host = ProcessInfo.processInfo.environment["BASE_URL"]
    try XCTSkipIf(host == "prod.example.com")

    let donut = try await truck.orderDonut(with: .sprinkles, host: host)
    XCTAssertTrue(donut.hasSprinkles)
}
XCTExpectFailure example swift · at 10:02 ↗ 
var truck: Truck!

func testOrderDonut() async throws {
    let host = ProcessInfo.processInfo.environment["BASE_URL"]
    try XCTSkipIf(host == "prod.example.com")

    let donut = try await truck.orderDonut(with: .sprinkles, host: host)
    XCTAssertTrue(donut.hasSprinkles)
}
XCTExpectFailure example swift · at 10:06 ↗ 
var truck: Truck!

func testOrderDonut() async throws {
    let host = ProcessInfo.processInfo.environment["BASE_URL"]
    try XCTSkipIf(host == "prod.example.com")

    XCTExpectFailure("<https://dev.myco.com/bug/98> Donut ordering service is down")
    let donut = try await truck.orderDonut(with: .sprinkles, host: host)
    XCTAssertTrue(donut.hasSprinkles)
}