Github user gatorsmile commented on the pull request: https://github.com/apache/spark/pull/13337#issuecomment-222022807 Originally, `ListTableSuite` was added to test the API `tables` in `SQLContext` ```Scala def tables(databaseName: String): DataFrame = { Dataset.ofRows(sparkSession, ShowTablesCommand(Some(databaseName), None)) } ``` In `SparkSession`, we do not have such an API. Instead, I think the new way for retrieving a list of tables is [`spark.catalog.listTables`](https://github.com/apache/spark/blob/0f61d6efb45b9ee94fa663f67c4489fbdae2eded/sql/core/src/main/scala/org/apache/spark/sql/internal/CatalogImpl.scala#L85-L107). This API has already been tested in the suite [`CatalogSuite.scala` ](https://github.com/apache/spark/blob/845e447fa03bf0a53ed79fa7e240af94dc152d2c/sql/core/src/test/scala/org/apache/spark/sql/internal/CatalogSuite.scala#L133-L174) Basically, the only value of the test suite `ListTableSuite` is to verify `tables` in `SQLContext`. Feel free to let me know if you want to remove it? keep it? or modify it using the new API? Thanks!
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