Adding test.

Author: ppisl

graalpython/com.oracle.graal.python.test/src/tests/test_builtin.py

@@ -37,3 +37,12 @@ def test_divmod_complex(self):
         self.assertRaises(TypeError, divmod, c1, c2)
         self.assertRaises(TypeError, divmod, 10, c2)
         self.assertRaises(TypeError, divmod, c1, 10)
+
+    def test_getitem_typeerror(self):
+        a = object()
+        try:
+            a[1]
+        except TypeError :
+            pass
+        else:
+            self.assertTrue(False)

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/subscript/GetItemNode.java

@@ -61,8 +61,8 @@ public Object doSpecialObject(Object primary, Object index) {
             CompilerDirectives.transferToInterpreterAndInvalidate();
             callGetitemNode = insert(LookupAndCallBinaryNode.create(__GETITEM__, null, () -> new LookupAndCallBinaryNode.NotImplementedHandler() {
                 @Override
-                public Object execute(@SuppressWarnings("unused") Object arg, Object arg2) {
-                    throw raise(TypeError, "'%p' object is not subscriptable", arg2);
+                public Object execute(Object arg, @SuppressWarnings("unused") Object arg2) {
+                    throw raise(TypeError, "'%p' object is not subscriptable", arg);
                 }
             }));
         }