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[SQL][TESTS] Add unit test for Metadata equality check #52397

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[SQL][TESTS] Add unit test for Metadata equality check #52397

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12 changes: 12 additions & 0 deletions sql/catalyst/src/test/scala/org/apache/spark/sql/types/MetadataSuite.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,18 @@ class MetadataSuite extends SparkFunSuite {
intercept[NoSuchElementException](meta.getLong("no_such_key"))
}

test("Metadata equality check") {

// Create a StructField with empty metadata
val field1 = StructField("myField", IntegerType, nullable = true, Metadata.empty)

// Create a StructField with non-empty metadata
val metadata = new MetadataBuilder().putString("description", "An integer field").build()
val field2 = StructField("myField", IntegerType, nullable = true, metadata)

assert(!(field1 == field2), s"field1 = $field1, field2 = $field2")
}

test("Kryo serialization for expressions") {
val conf = new SparkConf()
val serializer = new KryoSerializer(conf).newInstance()
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