ios - Asynchronous UI testing in Swift

Question

I have a button in a UI test that logs in to an app. The user flow to automate is this:

1. User taps button
2. Button text changes from "Log In" to "Processing..."
3. Button disappears when log in is successful

My UI test code is very simple for the functional test:

let loginButton = app.buttons["LOG IN"]
let welcomeText = app.staticTexts["Welcome!"]
loginButton.tap()
XCTAssertTrue(welcomeText.waitForExistence(10))

However, it does not validate that the button changes state to "Processing...".

If I attempt to put a check in the code like this, it doesn't work because by the time the UI Test has walked the screen looking for the text, it might have disappeared.

let loginButton = app.buttons["LOG IN"]
let loginButtonProcessingText = app.buttons.staticTexts["Processing..."]
let welcomeText = app.staticTexts["Welcome!"]
loginButton.tap()
XCTAssertTrue(loginButtonProcessingText.exists)
XCTAssertTrue(welcomeText.waitForExistence(10))

So my thought is that I need to somehow start the check for the processing test simultaneously with the button tap, or maybe a second before it.

Is there a way to spin up a check like that asynchronously in XCUI testing?

标签： iosswiftxctestxcuitest

Answer 1

您可以使用期望来测试异步任务。但首先，如果您将步骤分开，如下所示会更清楚；

let loginButton = app.buttons["LOG IN"]
loginButton.tap()

let loginButtonProcessingText = app.buttons.staticTexts["Processing..."]
XCTAssertTrue(loginButtonProcessingText.exists)

let welcomeText = app.staticTexts["Welcome!"]
XCTAssertTrue(welcomeText.waitForExistence(10))