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** Testing by small amount data, large amount data | ** Testing by small amount data, large amount data | ||
** Expected or un-expected result | ** Expected or un-expected result | ||
** Validate the (1) format of input data & output data e.g. data type of column, (2) file size | ** Validate the (1) format of input data & output data e.g. data type of column, (2) file size<ref>[https://stackoverflow.com/questions/5920333/how-to-check-size-of-a-file bash - How to check size of a file? - Stack Overflow]</ref> | ||
*** If the input data came from previous step, you should check the format of data generated by previous step before executing the process. | *** If the input data came from previous step, you should check the format of data generated by previous step before executing the process. | ||