[Android] Configurable instrumentation test runner + test SDK levels.

build/android/pylib/utils/apk_helper.py

 # Copyright (c) 2013 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.
 
 """Module containing utilities for apk packages."""
 
 import os.path
 import re
 
 from pylib import cmd_helper
 from pylib import constants
 
 
+_AAPT_PATH = os.path.join(constants.ANDROID_SDK_TOOLS, 'aapt')
+_MANIFEST_ATTRIBUTE_RE = re.compile(
+    r'\s*A: ([^\(\)= ]*)\([^\(\)= ]*\)="(.*)" \(Raw: .*\)$')
+_MANIFEST_ELEMENT_RE = re.compile(r'\s*(?:E|N): (\S*) .*$')
+
+
 def GetPackageName(apk_path):
   """Returns the package name of the apk."""
-  aapt = os.path.join(constants.ANDROID_SDK_TOOLS, 'aapt')
-  aapt_output = cmd_helper.GetCmdOutput(
-      [aapt, 'dump', 'badging', apk_path]).split('\n')
+  aapt_cmd = [_AAPT_PATH, 'dump', 'badging', apk_path]
+  aapt_output = cmd_helper.GetCmdOutput(aapt_cmd).split('\n')
   package_name_re = re.compile(r'package: .*name=\'(\S*)\'')
   for line in aapt_output:
     m = package_name_re.match(line)
     if m:
       return m.group(1)
   raise Exception('Failed to determine package name of %s' % apk_path)
+
+
+def _ParseManifestFromApk(apk_path):
+  aapt_cmd = [_AAPT_PATH, 'dump', 'xmltree', apk_path, 'AndroidManifest.xml']
+  aapt_output = cmd_helper.GetCmdOutput(aapt_cmd).split('\n')
+
+  parsed_manifest = {}
+  node_stack = [parsed_manifest]
+  indent = '  '
+
+  for line in aapt_output[1:]:
+    if len(line) == 0:
+      continue
+
+    indent_depth = 0
+    while line[(len(indent) * indent_depth):].startswith(indent):
+      indent_depth += 1
+
+    node_stack = node_stack[:indent_depth]
+    node = node_stack[-1]
+
+    m = _MANIFEST_ELEMENT_RE.match(line[len(indent) * indent_depth:])
+    if m:
+      if not m.group(1) in node:
+        node[m.group(1)] = {}
+      node_stack += [node[m.group(1)]]
+      continue
+
+    m = _MANIFEST_ATTRIBUTE_RE.match(line[len(indent) * indent_depth:])
+    if m:
+      if not m.group(1) in node:
+        node[m.group(1)] = []
+      node[m.group(1)].append(m.group(2))
+      continue
+
+  return parsed_manifest
+
+
+def GetInstrumentationName(
+    apk_path, default='android.test.InstrumentationTestRunner'):
+  """Returns the name of the Instrumentation in the apk."""
+
+  try:
+    manifest_info = _ParseManifestFromApk(apk_path)
+    return manifest_info['manifest']['instrumentation']['android:name'][0]
+  except KeyError:
+    return default