require File.expand_path(File.join(File.dirname(__FILE__), "/../helper"))

module Johnson
  class RuntimeTest < Johnson::TestCase
    def test_default_delegate_is_spidermonkey
      assert_equal(Johnson::SpiderMonkey::Runtime, @runtime.delegate.class)
    end

    def test_evaluate_returns_nil_for_nil_expression
      assert_nil(@runtime.evaluate(nil))
    end

    def test_js_eval
      assert_equal(1, @runtime.evaluate('eval("1");'))
    end

    def test_js_throws_compile_errors
      assert_raises(Johnson::Error) {
        @runtime.evaluate("var js_lambda = function(x) { return x ** 2; }")
      }
      assert_raises(Johnson::Error) {
        @runtime.compile("var js_lambda = function(x) { return x ** 2; }")
      }
    end

    def test_breakpoint_gets_called
      break_times = 0
      @runtime['some_number'] = 0
      script = @runtime.compile("some_number++;
                            var x = 0;
                            for(var i = 0; i < 10; i++) {
                              x++;
                            }
                            some_number++;
                        ", 'awesome_script')
      @runtime.break('awesome_script', 4) do
        break_times += 1
        assert_equal(@runtime['i'], @runtime['x'])
        assert_equal(1, @runtime['some_number'])
      end
      @runtime.evaluate_compiled_script(script)
      assert_equal(10, break_times)
      assert_equal(2, @runtime['some_number'])
    end
  end
end