Fix infinite loop caused by URL loading

[Kyome22]

Loads the argument URL received during WebView initialization only once.

How to reproduce the issue.

ContentViewState.swift

- let requestURL = URL(string: "https://cybozu.github.io/webview-debugger")!
+ let requestURL = URL(string: "https://www.google.com")!

ContentView.swift

WebViewReader { proxy in
    VStack {
        // ...

-       WebView(configuration: viewState.configuration)
+       WebView(url: viewState.requestURL, configuration: viewState.configuration)
            .uiDelegate(viewState)
            .navigationDelegate(viewState)
            .allowsInspectable(true)
            .allowsBackForwardNavigationGestures(true)
            .allowsLinkPreview(false)
            .refreshable()
            .border(Color.gray)
    }
-   .onAppear {
-       proxy.load(url: viewState.requestURL)
-   }
+   // .onAppear {
+   //     proxy.load(url: viewState.requestURL)
+   // }
}

[ichiho-ojima]

We would like to use testing to ensure that the infinite loop issue does not occur.
Is it possible to guarantee this with a unit test?

[Kyome22]

We would like to use testing to ensure that the infinite loop issue does not occur. Is it possible to guarantee this with a unit test?

It would be difficult to write an unit test that runs ViewRepresentable's updateUIView() method.
Therefore, it seems impossible to reproduce the infinite loop in the unit test.

[ichiho-ojima]

It would be difficult to write an unit test that runs ViewRepresentable's updateUIView() method. Therefore, it seems impossible to reproduce the infinite loop in the unit test.

Understood. I have come to the same conclusion.
Thanks.

[ichiho-ojima]

LGTM