ios – 等待所有HTTP请求在XCode UI测试中完成？

The framework acts like a user. It doesn’t care what code is running under the hood. The only thing that matters is what is visible on the screen.

也就是说,您可以在UI测试中使用wait for a label titled “Go!” to appear.

let app = XCUIApplication()
let goLabel = self.app.staticTexts["Go!"]
XCTAssertFalse(goLabel.exists)

let exists = NSPredicate(format: "exists == true")
expectationForPredicate(exists,evaluatedWithObject: goLabel,handler: nil)

app.buttons["Ready,set..."].tap()
waitForExpectationsWithTimeout(5,handler: nil)
XCTAssert(goLabel.exists)

你也可以extract that into a helper method.如果你使用一些Swift编译器魔法,你甚至可以在调用该方法的行上发生失败消息.

private fund waitForElementToAppear(element: XCUIElement,file: String = #file,line: UInt = #line) {
    let existsPredicate = NSPredicate(format: "exists == true")
    expectationForPredicate(existsPredicate,evaluatedWithObject: element,handler: nil)

    waitForExpectationsWithTimeout(5) { (error) -> Void in
        if (error != nil) {
            let message = "Failed to find (element) after 5 seconds."
            self.recordFailureWithDescription(message,inFile: file,atLine: line,expected: true)
        }
    }
}