[SPARK-32754] Unify to `assertEqualJoinPlans ` for join reorder suites

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.1.0
• Component/s: Tests
• Assignee: Zhenhua Wang
• Reporter: Zhenhua Wang
• Created: 31/Aug/20 09:14
• Updated: 01/Sep/20 16:12
• Resolved: 01/Sep/20 16:08

Description

Now three join reorder suites(`JoinReorderSuite`, `StarJoinReorderSuite`, `StarJoinCostBasedReorderSuite`) all contain an `assertEqualPlans` method and the logic is almost the same. We can extract the method to a single place for code simplicity.

Issue Links

• links to: [Github] Pull Request #29594 (wzhfy)