抛出Mockito和PowerMock MethodNotFoundException
使用Powermockito和Mockito为连接池构建一些简单的unit testing时遇到以下错误，我绕过了Hikari CP。 测试的设置如下。 令我感到困惑的是，我有一些未显示的unit testing，它们都使用相同的设置和方法。 只有这一个unit testing继续失败并出现该错误。 when我把它放在顶部的时候，它们都无法找到方法并不重要。
org.powermock.reflect.exceptions.MethodNotFoundException: No methods matching the name(s) getColumnCount were found in the class hierarchy of class java.lang.Object. at org.powermock.reflect.internal.WhiteboxImpl.getMethods(WhiteboxImpl.java:1720) at org.powermock.reflect.internal.WhiteboxImpl.getMethods(WhiteboxImpl.java:1745) at org.powermock.reflect.internal.WhiteboxImpl.getBestMethodCandidate(WhiteboxImpl.java:983) at org.powermock.core.MockGateway$MockInvocation.findMethodToInvoke(MockGateway.java:317) at org.powermock.core.MockGateway$MockInvocation.init(MockGateway.java:356) at org.powermock.core.MockGateway$MockInvocation.(MockGateway.java:307) at org.powermock.core.MockGateway.doMethodCall(MockGateway.java:142) at org.powermock.core.MockGateway.methodCall(MockGateway.java:125) at com.datafiniti.utils.mysqlconnpool.MysqlConnPoolTests.executeStringQuery(MysqlConnPoolTests.java:149) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:316) at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:89) at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:97) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:300) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:131) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.access$100(PowerMockJUnit47RunnerDelegateImpl.java:59) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner$TestExecutorStatement.evaluate(PowerMockJUnit47RunnerDelegateImpl.java:147) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.evaluateStatement(PowerMockJUnit47RunnerDelegateImpl.java:107) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:288) at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:87) at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:50) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:208) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:147) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:121) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:123) at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:121) at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53) at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:117) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:262) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:84) 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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
这是unit testing：
@RunWith(PowerMockRunner.class) public class MysqlConnPoolTests { private HikariConfig mockHikariConfig; private HikariDataSource hikariDataSource; @Before @PrepareForTest({HikariConfig.class, HikariDataSource.class}) public void beforEachTest() throws Exception { // mock the hikari confic used within the connection pool mockHikariConfig = PowerMockito.mock(HikariConfig.class); // mock hikari config constructor PowerMockito.whenNew(HikariConfig.class) .withNoArguments() .thenReturn(mockHikariConfig); // mock hikari config data source setting PowerMockito.doNothing().when(mockHikariConfig) .setDataSourceClassName("com.mysql.jdbc.jdbc2.optional.MysqlDataSource"); // mock the hikari data source used within the connection pool hikariDataSource = PowerMockito.mock(HikariDataSource.class); // mock hikari data source constructor PowerMockito.whenNew(HikariDataSource.class) .withParameterTypes(HikariConfig.class) .withArguments(Mockito.isA(HikariConfig.class)) .thenReturn(hikariDataSource); } @Test @PrepareForTest({MysqlConnectionPool.class, Connection.class, Statement.class, ResultSet.class, ResultSetMetaData.class}) public void executeStringQuery() throws Exception { PowerMockito.spy(MysqlConnectionPool.class); Connection mockConnection = Mockito.mock(Connection.class); Statement mockStatement = Mockito.mock(Statement.class); ResultSet mockResultSet = Mockito.mock(ResultSet.class); ResultSetMetaData mockMeta = Mockito.mock(ResultSetMetaData.class); Mockito.when(mockMeta.getColumnCount()).thenReturn(1); Mockito.when(mockMeta.getColumnLabel(1)).thenReturn("foo"); Mockito.when(mockResultSet.first()).thenReturn(true); Mockito.when(mockResultSet.next()).thenReturn(false); Mockito.when(mockResultSet.getString(1)).thenReturn("bar"); Mockito.when(mockStatement.execute(Mockito.eq("SELECT * FROM table;"))).thenReturn(true); Mockito.when(mockStatement.getResultSet()).thenReturn(mockResultSet); Mockito.when(mockConnection.createStatement()).thenReturn(mockStatement); Mockito.when(hikariDataSource.getConnection()).thenReturn(mockConnection); MysqlConnectionPool pool = new MysqlConnectionPool().create(); List<Map> result = pool.executeQuery("SELECT * FROM table;"); assertEquals(1, result.size()); assertTrue(result.get(0).containsKey("foo")); assertEquals("bar", result.get(0).get("foo")); }
}
要发布一个答案以防其他人看到这个。 将所有版本恢复为1.6.5解决了这个问题。
我没有足够的声誉来发表评论，所以不幸的是我正在使用答案空间发表评论。
Markll，我遇到了类似的问题，这是我的问题 – org.powermock.reflect.exceptions.MethodNotFoundException： – 模拟java sql类时 Mockito.when（mockConnection.createStatement（））。thenReturn（mockStatement）; 为你工作？ 我甚至没有过去。 也许你可以帮助我。 我的最新结论是，因为Connection，Statement和ResultSet实际上是接口而不是类，这就是它抛出错误的原因，说它在Object的层次结构中找不到。