Copy expect_tests from build

expect_tests/handle_list.py

Index: expect_tests/handle_list.py
diff --git a/expect_tests/handle_list.py b/expect_tests/handle_list.py
new file mode 100644
index 0000000000000000000000000000000000000000..da17e5d3fbf89ab430fc0be748972f8fa204ee15
--- /dev/null
+++ b/expect_tests/handle_list.py
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+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from expect_tests.type_definitions import Handler
+
+
+class ListHandler(Handler):
+  """List all of the tests instead of running them."""
+  SKIP_RUNLOOP = True
+
+  # Used to collect all bare test names for command line test name completion.
+  COMPLETION_LIST = None
+
+  class ResultStageHandler(Handler.ResultStageHandler):
+    @staticmethod
+    def handle_Test(test):
+      if ListHandler.COMPLETION_LIST is not None:
+        ListHandler.COMPLETION_LIST.append(test.name)
+      else:
+        print test.name
+
+    @staticmethod
+    def handle_MultiTest(multi_test):
+      print 'MultiTest(%r, atomic=%r)' % (multi_test.name, multi_test.atomic)
+      for test in multi_test.tests:
+        if ListHandler.COMPLETION_LIST is not None:
+          ListHandler.COMPLETION_LIST.append(test.name)
+        else:
+          print '|', test.name
+
+    # TODO(iannucci): group tests by dir?
+    # TODO(iannucci): print more data about the test in verbose mode?