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• Good for complex projects
• Good if you need setup and teardown subroutines
• Needs Ruby interpreter
• You will need only to point test and source files in CMakeLists files

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Types of subroutines

• assert - a state of belief. If assert fails your test will also fail (eg. assert_equals(1,2) will fail because 1!=2). Assert is core root of all unit tests.
• setup - subroutine called before every test subroutine. It can be used to initialize variables.
• teardown - subroutine called after every test subroutine. It can be used to clean after test.

Avaivable subroutunes

subroutines:
	assert_equals
	assert_not_equals
	assert_true
	assert_false
	setup
	teardown

!examples with different types:

!integers and reals
	assert_equals(a,b)
	assert_equals(a,b,"Message when assert fails")
	assert_not_equals(a,b)
	assert_not_equals(a,b,"Message when assert fails") 

!NOTE: "Message when assert fails" is optional

!reals with tolerance 
	assert_equals(a,b,tolerance)

!booleans and expressions
	assert_true(expression)
	assert_false(expression)

!strings
	assert_equals("abc","abc")
	assert_not_equals("abc","abc")

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