Fixed comparison (convert operands to numbers instead of to string)

Author: Ary Borenszweig

lib/rkelly/visitors/evaluation_visitor.rb

@@ -473,9 +473,9 @@ def additive_operator(operator, left, right)
 
       def compare(left, right, is_equal_operator = false)
         if left.is_a?(String) && right.is_a?(Numeric)
-          right = right.to_s
+          left = Float(left) rescue left
         elsif left.is_a?(Numeric) && right.is_a?(String)
-          left = left.to_s
+          right = Float(right) rescue right
         elsif left.nil? && right.is_a?(Numeric)
           left = 0
           if is_equal_operator && right == 0

test/test_eval.rb

@@ -128,4 +128,12 @@ def test_integer_null_comparison_3
   def test_integer_null_comparison_4
     assert !@runtime.eval("0 == null")
   end
+
+  def test_string_equality_with_leading_zero
+    assert @runtime.eval('"01" == 1')
+  end
+
+  def test_string_equality_with_leading_zero
+    assert !@runtime.eval('"hola" == 0')
+  end
 end