Use null check instead of pointer comparison #226

	---
	# Continuous Integration Workflow: Test case suite run + validation build check
	name: CI

	# Controls when the action will run.
	# Triggers the workflow on push or pull request events but only for the master branch
	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	# Job: Unit test suite
	unit-tests:
	name: "Unit Tests"
	runs-on: ubuntu-latest
	steps:
	# Install Ruby Testing Tools
	- name: Setup Ruby Testing Tools
	run: \|
	sudo gem install rspec
	sudo gem install rubocop -v 0.57.2

	# Checks out repository under $GITHUB_WORKSPACE
	- name: Checkout Latest Repo
	uses: actions/checkout@v2

	# Run Tests
	- name: Run All Unit Tests
	run: \|
	cd test && rake ci

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