TeslaCN opened a new issue #1737:
URL: https://github.com/apache/shardingsphere-elasticjob/issues/1737
## Bug Report
**The probability is very small.**
### Actual behavior
```
Running
org.apache.shardingsphere.elasticjob.cloud.console.controller.CloudJobControllerTest
Tests run: 27, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.621 sec
<<< FAILURE! - in
org.apache.shardingsphere.elasticjob.cloud.console.controller.CloudJobControllerTest
assertRegisterWithExistedName(org.apache.shardingsphere.elasticjob.cloud.console.controller.CloudJobControllerTest)
Time elapsed: 0.015 sec <<< ERROR!
org.mockito.exceptions.misusing.WrongTypeOfReturnValue:
String cannot be returned by getNumChildren()
getNumChildren() should return int
***
If you're unsure why you're getting above error read on.
Due to the nature of the syntax above problem might occur because:
1. This exception *might* occur in wrongly written multi-threaded tests.
Please refer to Mockito FAQ on limitations of concurrency testing.
2. A spy is stubbed using when(spy.foo()).then() syntax. It is safer to stub
spies -
- with doReturn|Throw() family of methods. More in javadocs for
Mockito.spy() method.
at
org.apache.shardingsphere.elasticjob.cloud.console.controller.CloudJobControllerTest.assertRegisterWithExistedName(CloudJobControllerTest.java:92)
```
### Steps to reproduce the behavior.
Just run `mvn install`
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