Question

java.lang.LinkageError：加载器约束违规：解析方法＆＃34; com.example.demo.utils.R.init（Landroid / content / Context;）V＆＃34;当前类的类加载器（org / robolectric / internal / bytecode / InstrumentingClassLoader的实例），com / example / test / FirstTest，以及方法＆＃39;的类加载器（sun / misc / Launcher $ AppClassLoader的实例）。定义类，com / example / demo / utils / R，对于签名中使用的android / content / Context类型有不同的Class对象

测试代码：

@runwith(RobolectricGradleTestRunner.class)
@config(constants = BuildConfig.class,sdk = 21,application = TestApplication.class)
public class FirstTest{
        @test
        public void testCase01(){
             MainActivity mainActivity =  Robolectric.setupActivity(MainActivity.class);
            ....
       }
    }

的build.gradle：

dependencies {
    testCompile 'junit:junit:4.12'
    testCompile "org.robolectric:robolectric:3.0"
    testCompile 'org.robolectric:shadows-httpclient:3.0'
...
}

的src /测试/ JAVA /.../ TestApplication：

public class TestApplication extends Application {
}

COM /示例/演示/ MainActivity：

public class MainActivity extends Activity {
    @override
    protected void onCreate(Bundle savedInstanceState) {
    ...
    com.example.demo.utils.R.init(getApplicationContext());
    ...
    }
}

COM /示例/演示/ utils的/ R：

public final class R {
    public static Resources resources;
    private static String packageName;
    public static void init(Context paramContext) {
       resources = paramContext.getResources();
       packageName = paramContext.getPackageName();
    }
...
}

Answer 1

I find the reason why tests run fail is using a class named com.example.demo.utils.R, which has a conflict with an R class autogenerated by the Android System. If you rename R to another name, like Ra, it works.

android unit test + robolectric 3.0 + java.lang.LinkageError：加载器约束违规

1 个答案: