Added tools for finding and purging flaky tests

tools/purge_flakies.py

Index: tools/purge_flakies.py
diff --git a/tools/purge_flakies.py b/tools/purge_flakies.py
new file mode 100755
index 0000000000000000000000000000000000000000..a24eea0871916ee7518cb27906c69e6c48cfa3be
--- /dev/null
+++ b/tools/purge_flakies.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python
+
+

[M-A Ruel, 2011/08/19 15:07:01]

Just add the copyright header there

[clee, 2011/08/19 16:53:57]

Done.

+"""Usage: python %prog testname [infile] [num_tests]
+"""
+
+
+import os
+import re
+import subprocess
+import sys
+import time
+
+
+def main():
+  test = sys.argv[1]
+  path = "/usr/local/google/home/charleslee/chromium/src/out/Debug/" + test
+  test_name_regex = r"(?P<testname>(\w+/)?\w+\.\w+(/\d+)?)"
+  test_start = re.compile("\[\s+RUN\s+\] " + test_name_regex)
+  test_list = []
+  if len(sys.argv) > 2:
+    infile = sys.argv[2]
+    data_list = open(infile, "r")
+    for line in data_list:
+      test_list.append(line.rstrip())
+    data_list.close()
+  else:
+    proc = subprocess.Popen([path], stdout=subprocess.PIPE)
+    while True:
+      line = proc.stdout.readline()
+      if not line:
+        if proc.poll() is not None:
+          break
+        continue
+      sys.stdout.write(line)
+      results = test_start.search(line)
+      if results:
+        test_list.append(results.group("testname"))
+  failures = []
+  index = 0
+  total = len(test_list)
+  print total
+  if len(sys.argv) > 3:
+    num_tests = int(sys.argv[3])
+    test_list = test_list[:num_tests]
+  for test_name in test_list:
+    num_fails = 0
+    num_terminated = 0
+    procs = []
+    args = [path, "--gtest_filter=" + test_name, "--gtest_repeat=10"]
+    while len(procs) < 18:
+      procs.append(subprocess.Popen(args))
+    seconds = 0
+    while procs:
+      for proc in procs:
+        if proc.poll() is not None:
+          if proc.returncode != 0:
+            ++num_fails
+          procs.remove(proc)
+      if seconds > 1000:
+        num_fails += len(procs)
+        num_terminated = len(procs)
+        while procs:
+          procs.pop().terminate()
+      time.sleep(1)
+      seconds += 1
+    if num_fails:
+      line = "%s: %i" % (test_name, num_fails)
+      if num_terminated:
+        line += ", %i terminated" % num_terminated
+      failures.append(line)
+    print "%s (%i / %i): %i" % (test_name, index, total, num_fails)
+    index += 1
+    time.sleep(1)
+  print failures
+  data_file = open(test + "_purges", "w")
+  for line in failures:
+    data_file.write(line + "\n")
+  data_file.close()
+
+
+if __name__ == "__main__":
+  main()
+

[M-A Ruel, 2011/08/19 15:07:01]

remove the extra line there

[clee, 2011/08/19 16:53:57]

Done.