You can create a test index with small value for these attributes
1. maxWarmDBCount (default 300, set to 1)
2. maxHotSpanSecs (default 777600 or 90 days, set to 3600 or 1hr)
3. maxDataSize (set to 1 i.e. 1 MB)
4. maxTotalDataSizeMB (set to 1 i.e. 1 MB)
5. frozenTimePeriodInSecs (default 188697600 , set to 3600)
Now setup some data to go to that index (or setup a scheduled search which uses collect command to send some test data to it). With above configurations, the data will roll to frozen frequently to test your script.
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