我正在尝试使用 mockito api 为最终类并使用 @PostConstruct 注释编写一个 junit。以下是我到目前为止编写的示例代码。
public final class ConfigCache {
private static final MultiKeyMap configCache = new MultiKeyMap();
@Autowired
private ConfigDao dao;
@PostConstruct
public void init() {
Map<String, Collection<Configuration>> map = null;
try {
if (configurationCache != null || configurationCache.isEmpty()) {
map = dao.loadConfigurations();
map.forEach((k, v) -> {
v.forEach((c) -> {
configCache.put(k, c.getAttributeName(), c.getAttributeValue());
});
});
}
} catch (DaoException e) {
throw new RuntimeException(e);
}
}
public Object getValue(String k1, String k2) {
return configurationCache.get(k1, k2);
}
@PreDestroy
public void clearCache() {
if (configCache != null) {
configCache.clear();
}
}
}
到目前为止，我拥有的 Junit 是
@RunWith(SpringRunner.class)
@SpringBootTest(classes = {ConfigCache.class})
public class ConfigCacheTest {
@InjectMocks
private ConfigCache configCache;
@MockBean
private ConfigDao dao;
private Map<String,Collection<Configuration>> map;
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
}
@After
public void tearDown() {
}
@Test
public void testInit() throws DaoException {
map = new HashMap<String,Collection<Configuration>>();
List<Configuration> configurations = new ArrayList<Configuration>();
Configuration configuration = new Configuration();
configuration.setAttributeName("a");
configuration.setAttributeValue("20");
configurations.add(configuration);
configuration = new Configuration();
configuration.setAttributeName("b");
configuration.setAttributeValue("10");
configurations.add(configuration);
map.put("abc", configurations);
when(dao.loadConfigurations()).thenReturn(map);
assertEquals("ConfigurationCacheBuilder.init()",configurationCacheBuilder.getConfigurationcache().size(),1);
}
}
当我运行这个时，我得到一个错误
java.lang.ExceptionInInitializerError
at org.mockito.internal.exceptions.stacktrace.ConditionalStackTraceFilter.<init>(ConditionalStackTraceFilter.java:17)
at org.mockito.exceptions.base.MockitoException.filterStackTrace(MockitoException.java:41)
at org.mockito.exceptions.base.MockitoException.<init>(MockitoException.java:30)
at org.mockito.exceptions.misusing.MockitoConfigurationException.<init>(MockitoConfigurationException.java:18)
at org.mockito.internal.configuration.plugins.PluginLoader.loadImpl(PluginLoader.java:66)
at org.mockito.internal.configuration.plugins.PluginLoader.loadPlugin(PluginLoader.java:24)
at org.mockito.internal.configuration.plugins.PluginRegistry.<init>(PluginRegistry.java:12)
at org.mockito.internal.configuration.plugins.Plugins.<clinit>(Plugins.java:11)
at org.mockito.internal.util.MockUtil.<clinit>(MockUtil.java:24)
at org.springframework.boot.test.mock.mockito.MockReset.<clinit>(MockReset.java:56)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at java.lang.Class.getEnumConstantsShared(Class.java:3320)
at java.lang.Class.enumConstantDirectory(Class.java:3341)
at java.lang.Enum.valueOf(Enum.java:232)
at sun.reflect.annotation.AnnotationParser.parseEnumValue(AnnotationParser.java:483)
at sun.reflect.annotation.AnnotationParser.parseMemberValue(AnnotationParser.java:347)
at java.lang.reflect.Method.getDefaultValue(Method.java:606)
at sun.reflect.annotation.AnnotationType.<init>(AnnotationType.java:128)
at sun.reflect.annotation.AnnotationType.getInstance(AnnotationType.java:85)
at sun.reflect.annotation.AnnotationParser.parseAnnotation2(AnnotationParser.java:266)
at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:120)
at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:72)
at java.lang.reflect.Field.declaredAnnotations(Field.java:1150)
at java.lang.reflect.Field.declaredAnnotations(Field.java:1148)
at java.lang.reflect.Field.getDeclaredAnnotations(Field.java:1139)
at java.lang.reflect.AccessibleObject.getAnnotations(AccessibleObject.java:207)
at org.junit.runners.model.FrameworkField.getAnnotations(FrameworkField.java:31)
at org.junit.runners.model.TestClass.addToAnnotationLists(TestClass.java:84)
at org.junit.runners.model.TestClass.scanAnnotatedMembers(TestClass.java:71)
at org.junit.runners.model.TestClass.<init>(TestClass.java:57)
at org.junit.runners.ParentRunner.createTestClass(ParentRunner.java:88)
at org.junit.runners.ParentRunner.<init>(ParentRunner.java:83)
at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<init>(SpringJUnit4ClassRunner.java:138)
at org.springframework.test.context.junit4.SpringRunner.<init>(SpringRunner.java:49)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createUnfilteredTest(JUnit4TestLoader.java:84)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:70)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.NullPointerException
at org.mockito.internal.configuration.plugins.Plugins.getStackTraceCleanerProvider(Plugins.java:17)
at org.mockito.internal.exceptions.stacktrace.StackTraceFilter.<clinit>(StackTraceFilter.java:21)
... 55 more
我尝试了 2 个版本的 mockito
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>2.0.2-beta</version>
</dependency>
and
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>2.5.5</version>
有人可以让我知道可能出了什么问题吗？