iPhone单元测试OCMock，如何模拟只读变量？

发布于 2024-12-20 08:58:42 字数 336 浏览 2 评论 0原文

我们总是这样使用OCMock，但是对于一些只读属性变量似乎不起作用，比如NavigationController等，它是只读的，设置mock一不生效。

您是否遇到过这个棘手的问题，您是如何解决的？任何想法将不胜感激，提前感谢你们聪明的家伙。

id mockWebView = [OCMockObject mockForClass:[UIWebView class]];
[[mockWebView expect] loadHTMLString:...];
object_setInstanceVariable(viewController, "webView", mockWebView);

原文

We always use OCMock in the following way, but it seems doesn't work for some read only property variables, such as NavigationController and so forth, it is read only, set mock one doesn't take effect.

Have you ever experienced this tough issue, how do you solve it? Any idea will be appreciated, thanks in advance you smart guys.

id mockWebView = [OCMockObject mockForClass:[UIWebView class]];
[[mockWebView expect] loadHTMLString:...];
object_setInstanceVariable(viewController, "webView", mockWebView);

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丑丑阿 2024-12-27 08:58:42

使用部分模拟：

id mockController = [OCMockObject partialMockForObject:viewController];
[[[mockController] stub] andReturn:mockWebView] webView];

[controller doSomethingWithWebView];

如果 viewController 直接访问 ivar，这将不起作用，但如果它通过访问器 self.webview 访问 ivar，则它将起作用，这通常是您应该访问属性的方式。

Use a partial mock:

id mockController = [OCMockObject partialMockForObject:viewController];
[[[mockController] stub] andReturn:mockWebView] webView];

[controller doSomethingWithWebView];

This won't work if viewController accesses the ivar directly, but it will if it accesses the ivar through the accessor: self.webview, which is generally how you should access properties.

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