A few more tests pass

test/browser/language_tests.js

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 (function() {
   'use strict';
 
   let dart_sdk = dart_library.import('dart_sdk');
   dart_sdk._isolate_helper.startRootIsolate(function() {}, []);
   let async_helper = dart_library.import('async_helper').async_helper;
@@ skipping 39 matching lines @@
       'async_star_test_none_multi': ['unittest', 'skip', 'fail'],
       'async_star_test_01_multi': ['unittest', 'skip', 'fail'],
       'async_star_test_02_multi': ['unittest', 'skip', 'fail'],
       'async_star_test_03_multi': ['unittest', 'skip', 'fail'],
       'async_star_test_04_multi': ['unittest', 'skip', 'fail'],
       'async_star_test_05_multi': ['unittest', 'skip', 'fail'],
 
       'async_switch_test': skip_fail,
       'asyncstar_throw_in_catch_test': skip_fail,
       'await_future_test': skip_fail,
-      'bit_operations_test_none_multi': skip_fail,
-      'bit_shift_test': skip_fail,
+      'bit_operations_test_none_multi': skip_fail,  // DDC/dart2js canonicalize bitop results to unsigned
       'bool_test': skip_fail,
       'bound_closure_equality_test': skip_fail,
       'branch_canonicalization_test': skip_fail,  // JS bit operations truncate to 32 bits.
       'call_closurization_test': skip_fail,
       'call_function_apply_test': skip_fail,
       'call_operator_test': skip_fail,
       'call_property_test': skip_fail,
       'call_test': skip_fail,
       'call_this_test': skip_fail,
       'call_through_null_getter_test': skip_fail,
@@ skipping 208 matching lines @@
       'namer2_test': skip_fail,
       'nan_identical_test': skip_fail,
       'nested_switch_label_test': skip_fail,
       'no_such_method3_test': skip_fail,
       'no_such_method_empty_selector_test': skip_fail,
       'no_such_method_subtype_test': skip_fail,
       'null_no_such_method_test': skip_fail,
       'number_identifier_test_05_multi': skip_fail,
       'number_identity2_test': skip_fail,
       'numbers_test': skip_fail,
-      'operator4_test': skip_fail,
-      'operator_test': skip_fail,
+      'operator4_test': skip_fail,  // CastError instead of TypeError
       'optimized_hoisting_checked_mode_assert_test': skip_fail,
-      'positive_bit_operations_test': skip_fail,
-      'prefix_test1': skip_fail,
-      'prefix_test2': skip_fail,
       'redirecting_factory_reflection_test': skip_fail,
       'regress_13462_0_test': skip_fail,
       'regress_13462_1_test': skip_fail,
       'regress_14105_test': skip_fail,
       'regress_16640_test': skip_fail,
       'regress_18535_test': skip_fail,
       'regress_21795_test': skip_fail,
       'regress_22443_test': skip_fail,
       'regress_22666_test': skip_fail,
       'regress_22719_test': skip_fail,
@@ skipping 512 matching lines @@
 
     for (let action of unittest_tests) {
       try {
         action();
       } catch (e) {
         console.error("Caught error tying to setup test:", e);
       }
     }
   });
 })();