android 用匕首测试异常

Question

这段代码的问题是我无法向测试添加任何内容class。无法模拟 TestModule 中的所有内容。

我运行我的 android 使用 AndroidJUnit4 和 Mockito 进行测试。我们使用 Android X 和 Dagger 库。

在测试中注入对象时出现问题。

code

@RunWith(AndroidJUnit4.class)
@LargeTest
public class AppHelperTest {
    @Inject
    public AppHelper appHelper;
    @Before
    public void setup() {
        Application application = (Application) InstrumentationRegistry.getInstrumentation().getTargetContext().getApplicationContext();
        TestComponent component = DaggerTestComponent.builder().application(application).appModule(new TestModules()).build();
        component.inject(this);
    }

    @Test
    public void checkVersion_appHelper_Subscribed() {
verify(appHelper).checkVersion().test().assertSubscribed();
    }
}

TestRunner MockitoException Mockito 无法模拟此 class：AppHelper

Underlying exception : java.lang.UnsupportedOperationException:

Cannot define class using reflection
   at com.app.di.modules.TestModules.getAppHelper(TestModules.java:72)
    at com.app.di.modules.TestModules_GetAppHelperFactory.getAppHelper(TestModules_GetAppHelperFactory.java:33)
    at com.app.di.modules.TestModules_GetAppHelperFactory.get(TestModules_GetAppHelperFactory.java:25)
    at com.app.di.modules.TestModules_GetAppHelperFactory.get(TestModules_GetAppHelperFactory.java:8)
    at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
    at com.app.di.DaggerTestComponent.injectAppHelperTest(DaggerTestComponent.java:450)
    at com.app.di.DaggerTestComponent.inject(DaggerTestComponent.java:435)
    at com.app.ui.helper.AppHelperTest.setup(AppHelperTest.java:46)
    at java.lang.reflect.Method.invoke(Native Method)
    at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at androidx.test.internal.runner.junit4.statement.RunBefores.evaluate(RunBefores.java:76)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access[=12=]0(ParentRunner.java:58)
    at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at androidx.test.ext.junit.runners.AndroidJUnit4.run(AndroidJUnit4.java:104)
    at org.junit.runners.Suite.runChild(Suite.java:128)
    at org.junit.runners.Suite.runChild(Suite.java:27)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access[=12=]0(ParentRunner.java:58)
    at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
    at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:56)
    at androidx.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:392)
    at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2252)
 Caused by: java.lang.UnsupportedOperationException: Cannot define class using reflection
    at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Unavailable.defineClass(ClassInjector.java:819)
    at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.inject(ClassInjector.java:183)
    at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.l

Answer 1

对于 Mockito 版本 3.2.0，我们提供 "native" Android 支持。要启用 Android 支持，请将 mockito-android 库作为项目的依赖项添加。此工件发布到同一个 Mockito 组织，可以按如下方式为 Android 导入：

repositories {
   jcenter()
 }
 dependencies {
   testCompile "org.mockito:mockito-core:+"
   androidTestCompile "org.mockito:mockito-android:+"
 }

android 用匕首测试异常

android testing exception with dagger

android

robolectric

android-testing

dagger

androidx