require 'test/unit' class TestCase < Test::Unit::TestCase def test_case case 5 when 1, 2, 3, 4, 6, 7, 8 assert(false) when 5 assert(true) end case 5 when 5 assert(true) when 1..10 assert(false) end case 5 when 1..10 assert(true) else assert(false) end case 5 when 5 assert(true) else assert(false) end case "foobar" when /^f.*r$/ assert(true) else assert(false) end case when true assert(true) when false, nil assert(false) else assert(false) end case "+" when *%w/. +/ assert(true) else assert(false) end case when *[], false assert(false) else assert(true) end case when *false, [] assert(true) else assert(false) end assert_raise(NameError) do case when false, *x, false end end end def test_deoptimization assert_in_out_err(['-e', <<-EOS], '', %w[42], []) class Symbol; undef ===; def ===(o); p 42; true; end; end; case :foo; when :foo; end EOS assert_in_out_err(['-e', <<-EOS], '', %w[42], []) class Fixnum; undef ===; def ===(o); p 42; true; end; end; case 1; when 1; end EOS end def test_optimization case 1 when 0.9, 1.1 assert(false) when 1.0 assert(true) else assert(false) end case 536870912 when 536870911.9, 536870912.1 assert(false) when 536870912.0 assert(true) else assert(false) end end def test_method_missing flag = false case 1 when Class.new(BasicObject) { def method_missing(*) true end }.new flag = true end assert(flag) end def test_nomethoderror assert_raise(NoMethodError) { case 1 when Class.new(BasicObject) { }.new end } end end