Add tool to simplify identification of failing tests

Test: Tested against XML files from partner.android.com

Change-Id: I79be39e6be97892df66663dfa74a6e3b1c08c985

tools/ops/android_test_parser.py

@@ -0,0 +1,98 @@
+import os
+import json
+import xml.etree.ElementTree as ET
+import sys
+
+
+STATIC_FILENAME = "tmp.xml"
+KNOWN_FAILING_FILENAME = "known_failing_names.txt"
+
+
+class FileDownloader(object):
+
+  def __init__(self, file_url):
+    self.file_url = file_url
+
+  def __enter__(self):
+    os.system("wget -O %s %s" % (STATIC_FILENAME, self.file_url))
+    os.system("touch %s" % KNOWN_FAILING_FILENAME)
+
+  def __exit__(self, *args):
+    os.system("rm %s" % STATIC_FILENAME)
+
+
+class TestCase(object):
+
+  def __init__(self, xml_test):
+    self._xml_test = xml_test
+
+  @property
+  def name(self):
+    return self._xml_test.get("name")
+
+  @property
+  def passed(self):
+    return self._xml_test.get("result") == "pass"
+
+  def __repr__(self):
+    return "%s: %s" % (self.name, self.passed)
+
+
+def generate_tests_from_file(fname):
+  tree = ET.parse(fname)
+  result = tree.getroot()
+  for module in result:
+    for test_case in module:
+      for test in test_case:
+        yield TestCase(test)
+
+
+def get_failing_tests(fname):
+  return filter(
+    lambda test: not test.passed,
+    generate_tests_from_file(fname),
+  )
+
+
+def get_failing_test_names(fname):
+  return map(
+    lambda test: test.name,
+    get_failing_tests(fname),
+  )
+
+
+def get_known_failing_names():
+  try:
+    with open(KNOWN_FAILING_FILENAME, "rb") as f:
+      return [line for line in f.read().splitlines() if line]
+  except IOError:
+    return []
+
+
+def new_test_failures(failing_test_names, known_failing_test_names):
+  return sorted(
+    list(
+      set(failing_test_names) - set(known_failing_test_names),
+    ),
+  )
+
+
+if __name__ == "__main__":
+  print "Any known test failures can be added to %s as a new line" % KNOWN_FAILING_FILENAME
+  try:
+    input_test_url = sys.argv[1]
+  except IndexError:
+    print "Supply *result_*.xml URL from a build from https://partner.android.com/"
+    sys.exit(1)
+
+  with FileDownloader(input_test_url):
+    print "Current failing tests"
+    print json.dumps(
+      sorted(
+        new_test_failures(
+          get_failing_test_names(STATIC_FILENAME),
+          get_known_failing_names(),
+        ),
+      ),
+      indent=4,
+    )