Create unit tests for HTTR gene data fit with tcplfit2

[sedavid01]

Goal: The goal of this issue is to create unit tests for high-throughput transcriptomics (HTTR) gene data such that we ensure that as the codebase of tcplfit2 is updated that the updates do not break/alter the results previously obtained in previous analyses with tcplfit2.

Needs for finishing this ticket:

• Choose a manageable subset of the overall data provided by the HTTR team - verify the chosen set covers many (if not all) scenarios of interest
• Create an RData file for the package (may want to ensure we do NOT want this to be exported from the package)
• Create a unit test ensuring that the results for HTTR remain consistent from version to version of tcplfit2

[sedavid01]

Baseline sampling strategy:

• utilize the previous used criteria for HTPP to fulfill needs we need to meet
• randomly select 50 genes (covering the previous bullet) as a baseline number of genes to select - make sure to account for the amount of time it takes to fit and test with these first 50. If the time is relatively fast - no longer than a few minutes - then may look to bump up to 100 genes.