powermock: mock java.sql.DriverManager will throw ClassNotPreparedException in jdk 11

test class

import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

import static org.mockito.ArgumentMatchers.nullable;
import static org.powermock.api.mockito.PowerMockito.doNothing;
import static org.powermock.api.mockito.PowerMockito.mock;
import static org.powermock.api.mockito.PowerMockito.mockStatic;
import static org.powermock.api.mockito.PowerMockito.when;

@RunWith(PowerMockRunner.class)
@PrepareForTest({DriverManager.class})
public class DriverManagerTest
{

    @Test
    public void test()
            throws SQLException
    {
        Statement statement = mock(Statement.class);

        Connection mysqlConn = mock(Connection.class);
        mockStatic(DriverManager.class);

        when(mysqlConn.createStatement()).thenReturn(statement);

        when(DriverManager.getConnection(nullable(String.class))).thenReturn(mysqlConn);

        when(statement.execute(nullable(String.class))).thenReturn(true);
        doNothing().when(statement).close();
        doNothing().when(mysqlConn).close();
    }
}

dependencies: [INFO] Used declared dependencies found: [INFO] org.powermock:powermock-module-junit4:jar:2.0.2:compile [INFO] org.powermock:powermock-api-mockito2:jar:2.0.2:test [INFO] org.mockito:mockito-core:jar:2.23.4:test [INFO] junit:junit:jar:4.12:test

in jdk11, not work, detail error message:


org.powermock.api.mockito.ClassNotPreparedException: 

[Ljava.lang.Object;@76c7beb3
The class java.sql.DriverManager not prepared for test.

	at org.powermock.api.mockito.expectation.reporter.MockitoPowerMockReporter.classNotPrepared(MockitoPowerMockReporter.java:29)
	at org.powermock.api.mockito.internal.mockcreation.MockTypeValidatorFactory$DefaultMockTypeValidator.validate(MockTypeValidatorFactory.java:37)
	at org.powermock.api.mockito.internal.mockcreation.AbstractMockCreator.validateType(AbstractMockCreator.java:10)
	at org.powermock.api.mockito.internal.mockcreation.DefaultMockCreator.createMock(DefaultMockCreator.java:49)
	at org.powermock.api.mockito.internal.mockcreation.DefaultMockCreator.mock(DefaultMockCreator.java:40)
	at org.powermock.api.mockito.PowerMockito.mockStatic(PowerMockito.java:62)
	at DriverManagerTest.test(DriverManagerTest.java:30)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.junit.runners.model.FrameworkMethod$1.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 org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	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$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.mockito.internal.runners.DefaultInternalRunner$1.run(DefaultInternalRunner.java:79)
	at org.mockito.internal.runners.DefaultInternalRunner.run(DefaultInternalRunner.java:85)
	at org.mockito.internal.runners.StrictRunner.run(StrictRunner.java:39)
	at org.mockito.junit.MockitoJUnitRunner.run(MockitoJUnitRunner.java:163)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

but in jdk8, work well.

About this issue

  • Original URL
  • State: open
  • Created 5 years ago
  • Reactions: 10
  • Comments: 15

Most upvoted comments

This is the work around

Remove the below lines: @PrepareForTest({DriverManager.class}) mockStatic(DriverManager.class); when(DriverManager.getConnection(nullable(String.class))).thenReturn(mysqlConn);

Add this line: PowerMockito.stub(PowerMockito.method(DriverManager.class, "getConnection", String.class, String.class, String.class)).toReturn(mysqlConn); OR PowerMockito.stub(PowerMockito.method(DriverManager.class, "getConnection", String.class)).toReturn(mysqlConn);