Unable to connect Neo4J server while writing unit tests

[saritatewari4]

Hello, I am using:

Neo4J Version - 4.2.4 (Java Driver)
Java 11
spring-data-neo4j.version - 5.3.3.RELEASE
OGM Core & API Version - 3.2.32

Unit tests are getting failed and I am getting the following error:

org.springframework.transaction.CannotCreateTransactionException: Could not open Neo4j Session for transaction; nested exception is org.neo4j.ogm.exception.ConnectionException: Could not create driver instance

	at org.springframework.data.neo4j.transaction.Neo4jTransactionManager.doBegin(Neo4jTransactionManager.java:204)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.startTransaction(AbstractPlatformTransactionManager.java:400)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)
	at org.springframework.test.context.transaction.TransactionContext.startTransaction(TransactionContext.java:103)
	at org.springframework.test.context.transaction.TransactionalTestExecutionListener.beforeTestMethod(TransactionalTestExecutionListener.java:206)
	at org.springframework.test.context.TestContextManager.beforeTestMethod(TestContextManager.java:289)
	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
	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$2.evaluate(ParentRunner.java:268)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
	at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: org.neo4j.ogm.exception.ConnectionException: Could not create driver instance
	at org.neo4j.ogm.drivers.bolt.driver.BoltDriver.initializeDriver(BoltDriver.java:173)
	at org.neo4j.ogm.drivers.bolt.driver.BoltDriver.checkDriverInitialized(BoltDriver.java:138)
	at org.neo4j.ogm.drivers.bolt.driver.BoltDriver.lambda$null$0(BoltDriver.java:124)
	at org.neo4j.ogm.session.transaction.DefaultTransactionManager.openTransaction(DefaultTransactionManager.java:75)
	at org.neo4j.ogm.session.Neo4jSession.beginTransaction(Neo4jSession.java:535)
	at org.springframework.data.neo4j.transaction.Neo4jTransactionManager.doBegin(Neo4jTransactionManager.java:182)
	... 27 more
Caused by: org.neo4j.driver.exceptions.ServiceUnavailableException: Unable to connect to localhost:7687, ensure the database is running and that there is a working network connection to it.
	at org.neo4j.driver.internal.util.Futures.blockingGet(Futures.java:143)
	at org.neo4j.driver.internal.util.Futures.blockingGet(Futures.java:113)
	at org.neo4j.driver.internal.InternalDriver.verifyConnectivity(InternalDriver.java:159)
	at org.neo4j.ogm.drivers.bolt.driver.BoltDriver.initializeDriver(BoltDriver.java:170)
	... 32 more
	Suppressed: org.neo4j.driver.internal.util.ErrorUtil$InternalExceptionCause
		at org.neo4j.driver.internal.async.connection.ChannelConnectedListener.databaseUnavailableError(ChannelConnectedListener.java:76)
		at org.neo4j.driver.internal.async.connection.ChannelConnectedListener.operationComplete(ChannelConnectedListener.java:70)
		at org.neo4j.driver.internal.async.connection.ChannelConnectedListener.operationComplete(ChannelConnectedListener.java:37)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:571)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:550)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:609)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:117)
		at org.neo4j.driver.internal.shaded.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:321)
		at org.neo4j.driver.internal.shaded.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:337)
		at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:707)
		at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
		at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
		at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
		at org.neo4j.driver.internal.shaded.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
		at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
		at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:7687
Caused by: java.net.ConnectException: Connection refused
	at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:779)
	at org.neo4j.driver.internal.shaded.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:330)
	at org.neo4j.driver.internal.shaded.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334)
	at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:707)
	at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
	at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
	at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
	at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at org.neo4j.driver.internal.shaded.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)

When I am using @SpringBootTest instead of @DataNeo4jTest. I am able to connect neo4j driver instance.