Add tests for ChoiceWorld, etc.

[todo]

Rigbox/tests/ExpPanelTest.m

Lines 21 to 26 in cfe8b61

	ExpType = {'Base', 'Signals'} % TODO Add tests for ChoiceWorld, etc.
	end
	methods (TestClassSetup)
	function setup(testCase)
	% SETUP Set up test case

---

This issue was generated by todo based on a TODO comment in cfe8b61 when #239 was merged. cc @cortex-lab.