tedyu commented on PR #48441:
URL: https://github.com/apache/spark/pull/48441#issuecomment-2411154153
In which directory should I put the following test ?
```
import static org.junit.Assert.*;
import org.apache.spark.unsafe.types.UTF8String;
import org.apache.spark.sql.catalyst.util.GenericArrayData;
import org.junit.Test;
import java.io.IOException;
public class JsonParserTest {
@Test
public void testJsonObjectKeysWithNullAndNonNullKeys() throws
IOException {
// JSON string that has a sequence where the parser will encounter
null, then non-null keys
String jsonString = "{\"key1\":null,
\"key2\":{\"nestedKey1\":\"value1\"}, \"key3\":\"value2\"}";
UTF8String json = UTF8String.fromString(jsonString);
GenericArrayData result = JsonExpressionUtils.jsonObjectKeys(json);
UTF8String[] expectedKeys = {
UTF8String.fromString("key1"),
UTF8String.fromString("key2"),
UTF8String.fromString("key3")
};
assertNotNull("Result should not be null", result);
assertEquals("Length of keys array should be 3", 3,
result.numElements());
assertArrayEquals("Keys should match expected values", expectedKeys,
(UTF8String[]) result.array());
}
}
```
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