Add assertion in unit test of OpenmldbCatalogService

[tobegit3hub]

Now the unit test of OpenmldbCatalogService is quite simple and lack of assertions. You can find the test code in https://github.com/4paradigm/OpenMLDB/blob/main/java/openmldb-batch/src/test/scala/com/_4paradigm/openmldb/batch/catalog/TestOpenmldbCatalogService.scala .

Now we can get all the table names from internal db. It would be better to add code in line 36 and check the table name like this using assertation.

val internalTableNames = List("JOB_INFO", "PRE_AGG_META_INFO")
assert(internalTableNames.contains(tables(i)))

[tobegit3hub]

Now we can get all the table names from internal db.

It would be better to add code in line 36 and check the table name like this.

val internalTableNames = List("JOB_INFO", "PRE_AGG_META_INFO")

assert(internalTableNames.contains(tables(i)))

[SaumyaBhushan]

I would like to work on this issue.

[SaumyaBhushan]

@tobegit3hub @lumianph I have raised a PR. Please review.