[COMPRESS-520] Implement ZCompressorInputStreamTest without powermock

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 1.20
• Fix Version/s: 1.21
• Assignee: Unassigned
• Reporter: Robin Schimpf
• Created: 18/May/20 15:42
• Updated: 24/May/20 08:45
• Resolved: 24/May/20 08:45

Description

The ZCompressorInputStreamTest uses powermock to mock an empty enumeration. This prevents the test to be run on Java 9+.
The same behaviour can be achieved by using Collections.emptyEnumeration and therefore the powermock dependency for the tests dropped.