Jmockit：无法模拟 net.android.Uri class 的方法 toString

Question

IDE: Android Studio 2.2.2 | Jmockit：2.1 | Java: 1.8.0_102-b14

我尝试模拟 class net.android.Uri 的 toString() 方法。此 class 上的所有方法都可以模拟 OK，但 toString() 方法。

@Test
public void method(@Mocked final Uri uri) throws Exception {
    new NonStrictExpectations() {
            {
                uri.getHost();
                result = "sendViewLog";
                uri.getAuthority();
                result = "getAuthority";
                uri.getEncodedFragment();
                result = "getEncodedFragment";
                uri.getPort();
                result = 8080;
                uri.toString(); // <-------
                result = "helloWorld";
            }
        };      

    sut.method();
}

结果： 但是 toString() returns 空值，上面的所有方法都被模拟了。你能给我一些解决方法来解决这个问题吗？

PS1: 我意识到当我将鼠标悬停在 Expectations 块内的 toString 方法时。它显示此警告消息：

Reports any calls to specific methods where the result of that call is ignored. Both methods specified in the inspection's settings and methods annotated with org.jetbrains.annotations.Contract(pure=true) are checked. For many methods, ignoring the result is perfectly legitimate, but for some methods it is almost certainly an error. Examples of methods where ignoring the result of a call is likely to be an error include java.io.inputStream.read(), which returns the number of bytes actually read, any method on java.lang.String or java.math.BigInteger, as all of those methods are side-effect free and thus pointless if ignored.

PS2: 当我通过 uri 实例检查 null 时，它通过了。但是，我要检查的客户端代码是 uri.toString().contains("/video") 因为 uri.toString() == null，所以 contains("/video") throws NullPointerException.

Answer 1

开发者的回答：

Yes, only implemented (with a body, not abstract) toString() methods can be mocked.

https://github.com/jmockit/jmockit1/issues/381

Jmockit：无法模拟 net.android.Uri class 的方法 toString

Jmockit: Can't mock method toString of net.android.Uri class

java

android

junit

jmockit