Testing

assertDataFrameEqual(actual, expected[, …])	A util function to assert equality between actual and expected (DataFrames or lists of Rows), with optional parameters checkRowOrder, rtol, and atol.
assertPandasOnSparkEqual(actual, expected[, …])	A util function to assert equality between actual (pandas-on-Spark object) and expected (pandas-on-Spark or pandas object).
assertSchemaEqual(actual, expected)	A util function to assert equality between DataFrame schemas actual and expected.

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