Ruby: 42-line barebones unit testing suite

gistfile1.txt

$assertions = 0
$assertions_pass = 0

def assert_true(cond, msg)
	$assertions += 1
	raise Exception.new("asset_true: failed: #{msg}")
	$assertions_pass += 1
end

def assert_equals(exp, act, msg)
	$assertions += 1
	raise Exception.new("assert_equals: #{exp.inspect} != #{act.inspect}: #{msg}") if exp != act
	$assertions_pass += 1
end

def log(str)
	$stderr.write "#{str}\n"
end

def tester(*tests)
	tcount = 0
	tpass = 0
	tests.each do |test|
		tcount += 1
		t = ('test_' + test).to_sym
		begin
			self.send(t)
			tpass += 1
			log "OK #{t}"
		rescue Exception => ex
			log "XX #{t} => #{ex.message}"
			ex.backtrace.each do |l|
				log "\t#{l}"
			end
		end
	end

	log '='*80
	log "TESTS PASSED: #{tpass}"
	log "TESTS FAILED: #{tcount - tpass}"
	log "ASSERTIONS: #{$assertions}\n\tPASS: #{$assertions_pass}\n\tFAIL: #{$assertions - $assertions_pass}"
end

# define tests with 'test_' prefix (e.g. 'test_unit1') then...
# tester('unit1', 'unit2', 'unit3')