Create daemon to monitor android device temperatures

scripts/slave/recipe_modules/chromium_android/tests/spawn_device_temp_monitor_test.py

Index: scripts/slave/recipe_modules/chromium_android/tests/spawn_device_temp_monitor_test.py
diff --git a/scripts/slave/recipe_modules/chromium_android/tests/spawn_device_temp_monitor_test.py b/scripts/slave/recipe_modules/chromium_android/tests/spawn_device_temp_monitor_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..309c3324ae95a615efc3a4f98b70efcab507acb8
--- /dev/null
+++ b/scripts/slave/recipe_modules/chromium_android/tests/spawn_device_temp_monitor_test.py
@@ -0,0 +1,119 @@
+#!/usr/bin/env python

[ghost stip (do not use), 2015/09/08 21:46:36]

you should append a LICENSE directive at the top. see other files

[bpastene, 2015/09/09 00:02:19]

Done.

+
+import json
+import os
+import shutil
+import signal
+import subprocess
+import sys
+import tempfile
+import unittest
+
+THIS_DIR = os.path.dirname(os.path.abspath(__file__))
+
+# For 'test_env'.
+sys.path.insert(

[ghost stip (do not use), 2015/09/08 21:46:37]

I wonder if you can use
https://chromium.googlesource.com/chromium/tools/build/+/master/scripts/commo...

# Import 'common.env' to load our Infra PYTHONPATH
sys.path.insert(0, os.path.join(
    os.path.dirname(os.path.realpath(__file__)), os.pardir))
import common.env

maybe not since these are tests

[bpastene, 2015/09/09 00:02:19]

It couldn't find unittests/test_env

+    0, os.path.abspath(os.path.join(THIS_DIR, '..', '..', '..', 'unittests')))
+# For 'spawn_device_temp_monitor.py'.
+sys.path.insert(
+    0, os.path.abspath(os.path.join(THIS_DIR, '..', 'resources')))
+
+# Imported for side effects on sys.path.
+import test_env
+import mock
+
+# In depot_tools/
+from testing_support import auto_stub
+import spawn_device_temp_monitor
+

[ghost stip (do not use), 2015/09/08 21:46:37]

two spaces for top-level import

[bpastene, 2015/09/09 00:02:19]

Done.

+class MainFuncTest(auto_stub.TestCase):
+

[ghost stip (do not use), 2015/09/08 21:46:37]

remove spaces

[bpastene, 2015/09/09 00:02:19]

Done.

+  def setUp(self):
+    # Collect calls to 'subprocess.Popen', which calls send_ts_mon_values.py

[ghost stip (do not use), 2015/09/08 21:46:36]

period after comment

[bpastene, 2015/09/09 00:02:19]

Done.

+    self.send_ts_mon_call = []
+    def mocked_ts_mon_calls(args):
+      self.send_ts_mon_call = args
+    self.mock(
+        spawn_device_temp_monitor.subprocess,
+        'Popen',
+        mocked_ts_mon_calls)
+
+    # Make sleep throw sigterm to simulate a kill and break out of loop
+    def mocked_sleep_call(duration):
+      self.assertEquals(30, duration)
+      raise spawn_device_temp_monitor.SigtermError()
+    self.mock(
+        spawn_device_temp_monitor.time,
+        'sleep',
+        mocked_sleep_call)
+
+    # Collect calls to os.kill
+    self.kill_calls = []
+    def mocked_kill_call(pid, thrown_signal):
+      self.kill_calls.append([pid, thrown_signal])
+    self.mock(
+        spawn_device_temp_monitor.os,
+        'kill',
+        mocked_kill_call)
+
+  def test_main_responsive_device(self):
+    # Collect calls to 'subprocess.check_output', which calls adb, and
+    # simulate a responsive device
+    adb_calls = []
+    def mocked_adb_calls(args):
+      adb_calls.append(args)
+      if args[4].startswith('grep'):
+        return "some_thermal_file_name"
+      elif args[4].startswith('cat'):
+        return "123"
+      elif args[4].startswith('dumpsys'):
+        return "temperature: 456"
+      else:
+        self.fail('Unexpected adb command: %s' % (' '.join(args)))
+
+    self.mock(
+        spawn_device_temp_monitor.subprocess,
+        'check_output',
+        mocked_adb_calls)
+    spawn_device_temp_monitor.main(
+        '/some/adb/path',
+        '["device_serial_1"]',
+        'metric_prefix')
+
+    # Should build args to send_ts_mon_values correctly
+    expected_cmd = [spawn_device_temp_monitor._RUN_PY,
+        'infra.tools.send_ts_mon_values',
+        '--float',
+        '{"name": "metric_prefix/device_serial_1/cpu_temp", "value": 123}',
+        '--float',
+        '{"name": "metric_prefix/device_serial_1/battery_temp", "value": 456}']
+    self.assertEquals(expected_cmd, self.send_ts_mon_call)
+  
+  def test_main_unresponsive_device(self):
+    # Collect calls to 'subprocess.check_output', which calls adb, and
+    # simulate an unresponsive device
+    adb_calls = []
+    def mocked_adb_calls(args):
+      adb_calls.append(args)
+      raise subprocess.CalledProcessError
+
+    self.mock(
+        spawn_device_temp_monitor.subprocess,
+        'check_output',
+        mocked_adb_calls)
+    spawn_device_temp_monitor.main(
+        '/some/adb/path',
+        '["device_serial_1"]',
+        'metric_prefix')
+
+    # Should build args to send_ts_mon_values without any metrics
+    self.assertEquals(2, len(self.send_ts_mon_call))
+    self.assertEquals(
+        spawn_device_temp_monitor._RUN_PY,
+        self.send_ts_mon_call[0])
+    self.assertEquals(
+        'infra.tools.send_ts_mon_values',
+        self.send_ts_mon_call[1])
+

[ghost stip (do not use), 2015/09/08 21:46:37]

two spaces for top-level declarations

[bpastene, 2015/09/09 00:02:19]

Done.

+if __name__ == '__main__':
+  unittest.main()