尝试在我的 AndroidTestCase 中使用 mockito。我将依赖项添加到 build.gradle 中:
final DEXMAKER_VERSION = '1.2'
dependencies {
// ...
androidTestCompile "com.google.dexmaker:dexmaker:${DEXMAKER_VERSION}"
androidTestCompile "com.google.dexmaker:dexmaker-mockito:${DEXMAKER_VERSION}"
androidTestCompile 'org.mockito:mockito-core:1.10.19'
}
带有 mockito 初始化的 TestCase:
public class UsersListPresenterTest extends AndroidTestCase {
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
}
public void testInitialize() throws Exception {
}
}
但是一旦我向类添加任何属性，甚至在添加任何注释之前，测试就开始崩溃:
public class UsersListPresenterTest extends AndroidTestCase {
String mockString;
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
}
public void testInitialize() throws Exception {
}
}
使用以下堆栈跟踪
java.lang.NullPointerException: Attempt to invoke virtual method
'java.lang.Class java.lang.Object.getClass()' on a null object reference
at com.google.dexmaker.mockito.DexmakerMockMaker.getInvocationHandlerAdapter(DexmakerMockMaker.java:80)
at com.google.dexmaker.mockito.DexmakerMockMaker.getHandler(DexmakerMockMaker.java:75)
at org.mockito.internal.util.MockUtil.isMockitoMock(MockUtil.java:74)
at org.mockito.internal.util.MockUtil.isMock(MockUtil.java:66)
at org.mockito.internal.configuration.injection.scanner.MockScanner.isMockOrSpy(MockScanner.java:86)
at org.mockito.internal.configuration.injection.scanner.MockScanner.preparedMock(MockScanner.java:72)
at org.mockito.internal.configuration.injection.scanner.MockScanner.scan(MockScanner.java:61)
at org.mockito.internal.configuration.injection.scanner.MockScanner.addPreparedMocks(MockScanner.java:47)
at org.mockito.internal.configuration.InjectingAnnotationEngine.injectMocks(InjectingAnnotationEngine.java:96)
at org.mockito.internal.configuration.InjectingAnnotationEngine.processInjectMocks(InjectingAnnotationEngine.java:62)
at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:56)
at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:108)
at com.myproject.presentation.UsersListPresenterTest.setUp(UsersListPresenterTest.java:28)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1853)
我做错了什么？
最佳答案
你可以尝试替换
MockitoAnnotations.initMocks(this);
有了这个
System.setProperty("dexmaker.dexcache", getContext().getCacheDir().getPath());
它对我有用。 See ref here
关于java - 在 AndroidTestCase 中调用 MockitoAnnotations.initMocks() 时的 NPE，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30590470/