How do you Unit Test Python DataFrames

CodeGeek123 :

How do i unit test python dataframes?

I have functions that have an input and output as dataframes. Almost every function I have does this. Now if i want to unit test this what is the best method of doing it? It seems a bit of an effort to create a new dataframe (with values populated) for every function?

Are there any materials you can refer me to? Should you write unit tests for these functions?

sechilds :

While Pandas' test functions are primarily used for internal testing, NumPy includes a very useful set of testing functions that are documented here: NumPy Test Support.

These functions compare NumPy arrays, but you can get the array that underlies a Pandas DataFrame using the values property. You can define a simple DataFrame and compare what your function returns to what you expect.

One technique you can use is to define one set of test data for a number of functions. That way, you can use Pytest Fixtures to define that DataFrame once, and use it in multiple tests.

In terms of resources, I found this article on Testing with NumPy and Pandas to be very useful. I also did a short presentation about data analysis testing at PyCon Canada this year: Automate Your Data Analysis Testing.

Collected from the Internet

Please contact [email protected] to delete if infringement.

edited at
0

Comments

0 comments
Login to comment

Related

How do you unit test a Celery task?

How do you unit test a Celery task?

How do you skip a unit test in Django?

How do you use test-unit?

How do you unit test private methods?

How do you unit test Django RawQuerySets

How do you moq a class for unit test

How do you test django-axes with a Django unit test?

How do you unit test Google Cloud NDB code?

How do you unit test a JavaFX controller with JUnit

How do you write a unit test for a function that is not exported?

How do you unit test Java EE code?

How do you perform unit test on a particular method of a struct in Go

How do you override a module/dependency in a unit test with Dagger 2.0?

How do you unit test office.js app code?

How do you unit test unique method calls in Jasmine/Jest?

How do you deal with a fluctuating unit test case with Jasmine?

In a unit test, do you verify and assert?

How do you mock classes that are used in a service that you're trying to unit test using JUnit + Mockito

How do you run unit tests in Python in the REPL?

How do you generate dynamic (parameterized) unit tests in python?

How do I mock a class in a Python unit test?

python project import uwsgi how to do unit test?

How to do unit test for Exceptions?

In a React/Jest unit test, how do you simulate an event prop being called by a mocked component?

How do you unit test LoggerMessage.Define() in .NET Core 3.1 with Moq?

How do you unit test a binding with a different name in an Angular 1.5 component?

How do you unit test ASP.NET Core Web Application (.Net Framework)?

How do you unit test a Vue.js functional component with a render function that returns any array of elements?