Basic android app implementation

tools/telemetry/telemetry/core/platform/android_device_unittest.py

Index: tools/telemetry/telemetry/core/platform/android_device_unittest.py
diff --git a/tools/telemetry/telemetry/core/platform/android_device_unittest.py b/tools/telemetry/telemetry/core/platform/android_device_unittest.py
index 5bba83d2a207b6d9e6db5a8a699862e8812de3a0..ed7707a9a93d2eb459c06d85459c2db5718ad3cc 100644
--- a/tools/telemetry/telemetry/core/platform/android_device_unittest.py
+++ b/tools/telemetry/telemetry/core/platform/android_device_unittest.py
@@ -4,7 +4,10 @@
 
 import unittest
 
+from telemetry import benchmark
+from telemetry.core import browser_options
 from telemetry.core.platform import android_device
+from telemetry.core.platform import android_platform_backend
 from telemetry.unittest_util import system_stub
 
 
@@ -24,3 +27,73 @@ class AndroidDeviceTest(unittest.TestCase):
 
   def tearDown(self):
     self._android_device_stub.Restore()
+
+
+class GetDeviceTest(unittest.TestCase):
+  def setUp(self):
+    self._android_device_stub = system_stub.Override(
+        android_device, ['adb_commands', 'os', 'subprocess', 'logging'])
+    self._apb_stub = system_stub.Override(
+        android_platform_backend, ['adb_commands'])
+
+  def tearDown(self):
+    self._android_device_stub.Restore()
+    self._apb_stub.Restore()
+
+  def testNoAdbReturnsNone(self):
+    finder_options = browser_options.BrowserFinderOptions()
+
+    def NoAdb(*_, **__):
+      raise OSError('not found')
+    self._android_device_stub.subprocess.Popen = NoAdb
+
+    self.assertEquals([], self._android_device_stub.logging.warnings)
+    self.assertIsNone(android_device.GetDevice(finder_options))
+
+  def testAdbNoDevicesReturnsNone(self):
+    finder_options = browser_options.BrowserFinderOptions()
+    self.assertEquals([], self._android_device_stub.logging.warnings)
+    self.assertIsNone(android_device.GetDevice(finder_options))
+
+  def testAdbPermissionsErrorReturnsNone(self):
+    finder_options = browser_options.BrowserFinderOptions()
+    self._android_device_stub.subprocess.Popen.communicate_result = (
+        'List of devices attached\n????????????\tno permissions\n',
+        '* daemon not running. starting it now on port 5037 *\n'
+        '* daemon started successfully *\n')
+    device = android_device.GetDevice(finder_options)
+    self.assertEquals([
+        'adb devices gave a permissions error. Consider running adb as root:',
+        '  adb kill-server',
+        '  sudo `which adb` devices\n\n'],
+        self._android_device_stub.logging.warnings)
+    self.assertIsNone(device)
+
+  def testAdbTwoDevicesReturnsNone(self):
+    finder_options = browser_options.BrowserFinderOptions()
+    self._android_device_stub.adb_commands.attached_devices = [
+        '015d14fec128220c', '015d14fec128220d']
+    device = android_device.GetDevice(finder_options)
+    self.assertEquals([
+        'Multiple devices attached. Please specify one of the following:\n'
+        '  --device=015d14fec128220c\n'
+        '  --device=015d14fec128220d'],
+        self._android_device_stub.logging.warnings)
+    self.assertIsNone(device)
+
+  def testAdbPickOneDeviceReturnsDeviceInstance(self):
+    finder_options = browser_options.BrowserFinderOptions()
+    finder_options.android_device = '555d14fecddddddd'  # pick one
+    self._android_device_stub.adb_commands.attached_devices = [
+        '015d14fec128220c', '555d14fecddddddd']
+    device = android_device.GetDevice(finder_options)
+    self.assertEquals([], self._android_device_stub.logging.warnings)
+    self.assertEquals('555d14fecddddddd', device.device_id)
+
+  def testAdbOneDeviceReturnsDeviceInstance(self):
+    finder_options = browser_options.BrowserFinderOptions()
+    self._android_device_stub.adb_commands.attached_devices = (
+        ['015d14fec128220c'])
+    device = android_device.GetDevice(finder_options)
+    self.assertEquals([], self._android_device_stub.logging.warnings)
+    self.assertEquals('015d14fec128220c', device.device_id)