caoxuewen created SPARK-23609:

             Summary: Test code does not conform to the test title
                 Key: SPARK-23609
             Project: Spark
          Issue Type: Improvement
          Components: SQL, Tests
    Affects Versions: 2.4.0
            Reporter: caoxuewen

Currently, In testing EnsureRequirements's test cases to eliminate 
ShuffleExchange, The test code is not in conformity with the purpose of the 
test.These test cases are as follows:
1、test("EnsureRequirements eliminates Exchange if child has same partitioning")
   The checking condition is that there is no ShuffleExchange in the physical 
plan. = = 2 It's not accurate here.
2、test("EnsureRequirements does not eliminate Exchange with different 
   The purpose of the test is to not eliminate ShuffleExchange, but its test 
code is the same as test("EnsureRequirements eliminates Exchange if child has 
same partitioning")

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