run_isolated.py: install CIPD packages

client/tests/subprocess42_test.py

 #!/usr/bin/env python
 # Copyright 2013 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 import itertools
 import logging
 import os
 import sys
 import tempfile
@@ skipping 647 matching lines @@
         self.assertEqual(1, proc.wait())
         self.assertEqual((None, None), proc.recv_any())
       else:
         self.assertEqual(0, proc.wait())
         self.assertEqual(('stdout', 'got signal 15\nbye\n'), proc.recv_any())
     finally:
       # In case the test fails.
       proc.kill()
       proc.wait()
 
+  def test_split(self):
+    data = [
+      ('stdout', 'o1\no2\no3\n'),
+      ('stderr', 'e1\ne2\ne3\n'),
+      ('stdout', '\n\n'),
+      ('stdout', '\n'),
+      ('stdout', 'o4\no5'),
+      ('stdout', '_sameline\nincomplete'),
+      ('stderr', 'forces previous chunk to be yielded\n'),
+      ('stdout', 'incomplete last one'),
+    ]
+    self.assertEquals(list(subprocess42.split(data)), [
+      ('stdout', 'o1'),
+      ('stdout', 'o2'),
+      ('stdout', 'o3'),
+      ('stderr', 'e1'),
+      ('stderr', 'e2'),
+      ('stderr', 'e3'),
+      ('stdout', ''),
+      ('stdout', ''),
+      ('stdout', ''),
+      ('stdout', 'o4'),
+      ('stdout', 'o5_sameline'),
+      ('stdout', 'incomplete'),
+      ('stderr', 'forces previous chunk to be yielded'),
+      ('stdout', 'incomplete last one'),
+    ])
 
 if __name__ == '__main__':
   if '-v' in sys.argv:
     unittest.TestCase.maxDiff = None
   logging.basicConfig(
       level=logging.DEBUG if '-v' in sys.argv else logging.ERROR)
   unittest.main()