[android] Stop using isolate.py for data dependency management.

build/android/pylib/local/device/local_device_test_run_test.py

 #!/usr/bin/env python
 # Copyright 2016 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.
 
 # pylint: disable=protected-access
 
 import unittest
 
 from pylib.base import base_test_result
 from pylib.constants import host_paths
 from pylib.local.device import local_device_test_run
 
 with host_paths.SysPath(host_paths.PYMOCK_PATH):
   import mock # pylint: disable=import-error
 
 
+class SubstituteDeviceRootTest(unittest.TestCase):
+
+  def testNoneDevicePath(self):
+    self.assertEquals(
+        '/fake/device/root',
+        local_device_test_run.SubstituteDeviceRoot(
+            None, '/fake/device/root'))
+
+  def testStringDevicePath(self):
+    self.assertEquals(
+        '/another/fake/device/path',
+        local_device_test_run.SubstituteDeviceRoot(
+            '/another/fake/device/path', '/fake/device/root'))
+
+  def testListWithNoneDevicePath(self):
+    self.assertEquals(
+        '/fake/device/root/subpath',
+        local_device_test_run.SubstituteDeviceRoot(
+            [None, 'subpath'], '/fake/device/root'))
+
+  def testListWithoutNoneDevicePath(self):
+    self.assertEquals(
+        '/another/fake/device/path',
+        local_device_test_run.SubstituteDeviceRoot(
+            ['/', 'another', 'fake', 'device', 'path'],
+            '/fake/device/root'))
+
+
 class TestLocalDeviceTestRun(local_device_test_run.LocalDeviceTestRun):
 
   # pylint: disable=abstract-method
 
   def __init__(self):
     super(TestLocalDeviceTestRun, self).__init__(
         mock.MagicMock(), mock.MagicMock())
 
 
 class TestLocalDeviceNonStringTestRun(
@@ skipping 109 matching lines @@
 
     test_run = TestLocalDeviceNonStringTestRun()
     tests_to_retry = test_run._GetTestsToRetry(tests, try_results)
     self.assertEquals(1, len(tests_to_retry))
     self.assertIsInstance(tests_to_retry[0], dict)
     self.assertEquals(tests[1], tests_to_retry[0])
 
 
 if __name__ == '__main__':
   unittest.main(verbosity=2)