NullPointerException in BlockchainTest.testFindTransaction

[seanrobbins]

1. What did you do?

• Clone java-tron repository
• Import java-tron into IntelliJ
• Open BlockchainTest.java
• Run test testFindTransaction

2. What did you expect to see?

• Test pass

3. What did you see instead?

• Test fails with a NullPointerException

java.lang.NullPointerException
at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:209)
at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:214)
at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:49)
at org.tron.protos.core.TronBlock$Block.parseFrom(TronBlock.java:313)
at org.tron.core.BlockchainIterator.next(BlockchainIterator.java:46)
at org.tron.core.Blockchain.findTransaction(Blockchain.java:116)
at org.tron.core.BlockchainTest.testFindTransaction(BlockchainTest.java:91)
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.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$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Exception thrown is from the following code in BlockchainIterator. The following returns null:

byte[] value = blockchain.getBlockDB().get(index);

And the exception is thrown when the following line executes with null as the value:

block = TronBlock.Block.parseFrom(value);

[seanrobbins]

Attempted a fix for these unit test issues in PR #33

[seanrobbins]

Fixes for the issues with these unit tests were merged to the develop branch in these PRs:
#33
#34

I'm going to close this issue.