Update test for new transformation API

IPython/terminal/tests/test_interactivshell.py

@@ -96,9 +96,7 b' class InteractiveShellTestCase(unittest.TestCase):'
     @mock_input
     def test_inputtransformer_syntaxerror(self):
         ip = get_ipython()
-        transformer = SyntaxErrorTransformer()
-        ip.input_splitter.python_line_transforms.append(transformer)
-        ip.input_transformer_manager.python_line_transforms.append(transformer)
+        ip.input_transformer_manager.line_transforms.append(syntax_error_transformer)
 
         try:
             #raise Exception
@@ -112,8 +110,7 b' class InteractiveShellTestCase(unittest.TestCase):'
                 yield u'print(4*4)'
 
         finally:
-            ip.input_splitter.python_line_transforms.remove(transformer)
-            ip.input_transformer_manager.python_line_transforms.remove(transformer)
+            ip.input_transformer_manager.line_transforms.remove(syntax_error_transformer)
 
     def test_plain_text_only(self):
         ip = get_ipython()
@@ -146,20 +143,17 b' class InteractiveShellTestCase(unittest.TestCase):'
         self.assertEqual(data, {'text/plain': repr(obj)})
         assert captured.stdout == ''
 
-
-
-class SyntaxErrorTransformer(InputTransformer):
-    def push(self, line):
+def syntax_error_transformer(lines):
+    """Transformer that throws SyntaxError if 'syntaxerror' is in the code."""
+    for line in lines:
         pos = line.find('syntaxerror')
         if pos >= 0:
             e = SyntaxError('input contains "syntaxerror"')
             e.text = line
             e.offset = pos + 1
             raise e
-        return line
+    return lines
 
-    def reset(self):
-        pass
 
 class TerminalMagicsTestCase(unittest.TestCase):
     def test_paste_magics_blankline(self):