Fix range test.

Author: fangerer

graalpython/com.oracle.graal.python.test/src/com/oracle/graal/python/test/datatype/PRangeTests.java

@@ -95,8 +95,6 @@ public void getItem() {
 
     @Test
     public void getItemNegative() {
-        PRange range = PythonObjectFactory.create().createRange(10);
-        assertEquals(7, range.getItemNormalized(-3));
         String source = "print(range(10)[-3])\n";
         assertPrints("7\n", source);
     }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/range/RangeBuiltins.java

@@ -185,6 +185,11 @@ PIntegerIterator iter(PRange self) {
     abstract static class GetItemNode extends PythonBinaryBuiltinNode {
         @Child private NormalizeIndexNode normalize = NormalizeIndexNode.forRange();
 
+        @Specialization
+        Object doPRange(PRange primary, boolean idx) {
+            return primary.getItemNormalized(normalize.execute(idx, primary.len()));
+        }
+
         @Specialization
         Object doPRange(PRange primary, int idx) {
             return primary.getItemNormalized(normalize.execute(idx, primary.len()));
@@ -195,6 +200,11 @@ Object doPRange(PRange primary, long idx) {
             return primary.getItemNormalized(normalize.execute(idx, primary.len()));
         }
 
+        @Specialization
+        Object doPRange(PRange primary, PInt idx) {
+            return primary.getItemNormalized(normalize.execute(idx, primary.len()));
+        }
+
         @Specialization
         Object doPRange(PRange range, PSlice slice) {
             SliceInfo info = slice.computeActualIndices(range.len());