bugfix/1607: coercion error should correctly report relevant failure cases

unionai-oss / pandera

A light-weight, flexible, and expressive statistical data testing library

https://www.union.ai/pandera

MIT License

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bugfix/1607: coercion error should correctly report relevant failure cases #1608

Closed cosmicBboy closed 2 weeks ago

cosmicBboy commented 3 weeks ago

Fixes #1607.

This PR makes sure that failure cases that consist of more than one column are json encoded so that they can be cast into string columns. Coercion errors with a specific key are reported more granularly, creating a failure cases dataframe with only that column instead of the whole dataframe.