Make Array#fetch exceptions compliant

opal · Nov 8, 2013 · 6639f14 · 6639f14
1 parent b619097
commit 6639f14
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/opal/core/array.rb b/opal/core/array.rb
@@ -592,7 +592,12 @@ def fetch(index, defaults = undefined, &block)
         return defaults;
       }
 
-      #{ raise IndexError, "Array#fetch" };
+      if (self.length === 0) {
+        #{raise IndexError, "index #{`original`} outside of array bounds: 0...0"}
+      }
+      else {
+        #{raise IndexError, "index #{`original`} outside of array bounds: -#{`self.length`}...#{`self.length`}"};
+      }
     }
   end