如何在UIWebView / WebKit中编写单元测试用例（XCTest）-Swift

一个好的方法是创建伪造的导航操作以手动调用该委托。

在这个问题中，您有一个很好的例子来编写这种方式的测试用例。单元测试wknavigation代理功能

在导航中测试加载的示例：

// setup
let fakeNavigation = WKNavigation()

delegateObject.refresh() // Set loading to true and init the web view
XCTAssertTrue(delegateObject.loading)

delegateObject.webView(webView, didFinish: fakeNavigation)
XCTAssertFalse(delegateObject.loading)

测试策略的示例：

class FakeNavigationAction: WKNavigationAction {
    let testRequest: URLRequest
    override var request: URLRequest {
        return testRequest
    }

    init(testRequest: URLRequest) {
        self.testRequest = testRequest
        super.init()
    }
}

// setup
var receivedPolicy: WKNavigationActionPolicy?
let fakeAction = FakeNavigationAction(testRequest: ...)

// act
delegateObject.webView(webView, decidePolicyFor: fakeAction, decisionHandler: { 
    receivedPolicy = $0 
})


XCTAssertEqual(receivedPolicy, theExpectedValue)