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Proof of concept CTL unit tests and CI System

This is intended to be a framework for unit testing ACES CTL code.

Organization

This repo contains the following directories

lib - is a skeleton intended to contain code we've written and want to unit test

tests - contains unit testing code

.github/workflows - contains the code for the github action that performs the testing on push or PR to the repo

Test structure

The tests directory contains a series of files with unit tests for function in correspond CTL files. For example, ACEStests.ACESlib.Utilities.ctl contains unit tests for code in ACESlib.Utilities.ctl.

The unit test files import the primary CTL being tested (e.g. ACESlib.Utilities.ctl) and ACEStests.Common.ctl.

ACEStests.Common.ctl contains functions to enable testing such as functions to compare the actual result of a CTL function to the expected result.

ACEStests.Execute.Tests imports each file with the unit tests (e.g. ACEStests.ACESlib.Utilities.ctl) and then runs each test from the main function.

The testing is executed using ctlrender (this is a bit of a hack) by performing ctlrender -ctl ACEStests.Execute.Tests.ctl /tmp/input.tif /tmp/output.tif on the github runner. The results are piped into a file and the file is inspected to see if the word FAILED exists anywhere inside.

If FAILED does not occur, then the action contines and will likely succeed. If FAILED does occur, the action fails and the user is alerted the PR or commit fails the unit testing.