Question

Super-beginner easy points ruby question. I’m trying to learn some ruby by programming the Project Euler problems. So I have a test

class ProjectEuler_tests < Test::Unit::TestCase   @solution = 123456 # Not the answer so as not to be a spoiler   def test_problem_1     assert_equal(@solution, ProjectEuler1.new.solve)   end end 

But this doesn’t work, @solution is nil when the test runs. What is the proper way to assign it at the class scope?

Answer 1

Class constants in ruby start with an uppercase char:

class ProjectEuler_tests < Test::Unit::TestCase   SOLUTION = 123456 # Not the answer so as not to be a spoiler   def test_problem_1     assert_equal(SOLUTION, ProjectEuler1.new.solve)   end end