Fix mojo_ tools on the first run after adb kill-server.

mojo/devtools/common/devtoolslib/android_shell_unittest.py

+# Copyright 2015 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.
+
+"""Tests for the Android shell abstraction."""
+
+import imp
+import os.path
+import sys
+import unittest
+
+try:
+  imp.find_module("devtoolslib")
+except ImportError:
+  sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from devtoolslib.android_shell import parse_adb_devices_output
+
+class AndroidShellTest(unittest.TestCase):
+  """Tests the Android shell abstraction."""
+
+  def test_parse_adb_devices_output(self):
+    """Tests parsing of the `adb devices` output."""
+    one_device_output = """\
+List of devices attached
+42424242        device
+
+"""
+    results = parse_adb_devices_output(one_device_output)
+    self.assertEquals(1, len(results))
+    self.assertTrue('42424242' in results)
+    self.assertEquals('device', results['42424242'])
+
+    multi_devices_output = """\
+List of devices attached
+42424242        device
+42424243        offline
+42424244        device
+
+"""
+    results = parse_adb_devices_output(multi_devices_output)
+    self.assertEquals(3, len(results))
+    self.assertTrue('42424242' in results)
+    self.assertEquals('device', results['42424242'])
+    self.assertTrue('42424243' in results)
+    self.assertEquals('offline', results['42424243'])
+    self.assertTrue('42424244' in results)
+    self.assertEquals('device', results['42424244'])
+
+    # Output produced when adb server needs to be started.
+    adb_server_startup_output = """\
+* daemon not running. starting it now on port 5037 *
+* daemon started successfully *
+List of devices attached
+42424242        device
+
+"""
+    results = parse_adb_devices_output(adb_server_startup_output)
+    self.assertEquals(1, len(results))
+    self.assertTrue('42424242' in results)
+    self.assertEquals('device', results['42424242'])