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https://issues.apache.org/jira/browse/SPARK-38720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Gekk updated SPARK-38720:
-----------------------------
    Description: 
Add at least one test for the error class *CANNOT_CHANGE_DECIMAL_PRECISION* to 
QueryExecutionErrorsSuite. The test should cover the exception throw in 
QueryExecutionErrors:

{code:scala}
  def cannotChangeDecimalPrecisionError(
      value: Decimal, decimalPrecision: Int, decimalScale: Int): 
ArithmeticException = {
    new SparkArithmeticException(errorClass = "CANNOT_CHANGE_DECIMAL_PRECISION",
      messageParameters = Array(value.toDebugString,
        decimalPrecision.toString, decimalScale.toString, 
SQLConf.ANSI_ENABLED.key))
  }
{code}

For example, here is a test for the error class *UNSUPPORTED_FEATURE*: 
https://github.com/apache/spark/blob/34e3029a43d2a8241f70f2343be8285cb7f231b9/sql/core/src/test/scala/org/apache/spark/sql/errors/QueryCompilationErrorsSuite.scala#L151-L170

  was:
Add at least one test for the error class *CANNOT_CAST_DATATYPE* to 
QueryExecutionErrorsSuite. The test should cover the exception throw in 
QueryExecutionErrors:

{code:scala}
  def cannotCastFromNullTypeError(to: DataType): Throwable = {
    new SparkException(errorClass = "CANNOT_CAST_DATATYPE",
      messageParameters = Array(NullType.typeName, to.typeName), null)
  }
{code}

For example, here is a test for the error class *UNSUPPORTED_FEATURE*: 
https://github.com/apache/spark/blob/34e3029a43d2a8241f70f2343be8285cb7f231b9/sql/core/src/test/scala/org/apache/spark/sql/errors/QueryCompilationErrorsSuite.scala#L151-L170


> Test the error class: CANNOT_CHANGE_DECIMAL_PRECISION
> -----------------------------------------------------
>
>                 Key: SPARK-38720
>                 URL: https://issues.apache.org/jira/browse/SPARK-38720
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.4.0
>            Reporter: Max Gekk
>            Priority: Minor
>              Labels: starter
>
> Add at least one test for the error class *CANNOT_CHANGE_DECIMAL_PRECISION* 
> to QueryExecutionErrorsSuite. The test should cover the exception throw in 
> QueryExecutionErrors:
> {code:scala}
>   def cannotChangeDecimalPrecisionError(
>       value: Decimal, decimalPrecision: Int, decimalScale: Int): 
> ArithmeticException = {
>     new SparkArithmeticException(errorClass = 
> "CANNOT_CHANGE_DECIMAL_PRECISION",
>       messageParameters = Array(value.toDebugString,
>         decimalPrecision.toString, decimalScale.toString, 
> SQLConf.ANSI_ENABLED.key))
>   }
> {code}
> For example, here is a test for the error class *UNSUPPORTED_FEATURE*: 
> https://github.com/apache/spark/blob/34e3029a43d2a8241f70f2343be8285cb7f231b9/sql/core/src/test/scala/org/apache/spark/sql/errors/QueryCompilationErrorsSuite.scala#L151-L170



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