Bisection debugging helper script

pydir/bisection-test.py

Index: pydir/bisection-test.py
diff --git a/pydir/bisection-test.py b/pydir/bisection-test.py
new file mode 100755
index 0000000000000000000000000000000000000000..81ae63915d032b057edb6294d5c718f157cf3fe6
--- /dev/null
+++ b/pydir/bisection-test.py
@@ -0,0 +1,55 @@
+#!/usr/bin/env python2
+import argparse
+import sys
+
+def main():
+  desc = 'Crash simulator script, useful for testing the bisection tool.\
+          bisection-tool.py --cmd "./pydir/bisection-test.py -c 2x3" \
+          --end 1000 --timeout 60'
+  argparser = argparse.ArgumentParser(description=desc)
+  argparser.add_argument('--include', '-i', default=[], dest='include',
+    action='append',
+    help='Include list, single values or ranges')
+  argparser.add_argument('--exclude', '-e', default=[], dest='exclude',
+    action='append',
+    help='Exclude list, single values or ranges')
+  argparser.add_argument('--crash', '-c', default=[], dest='crash',
+    action='append',
+    help='Crash list, single values or x-separated combinations like 2x4')
+
+  args = argparser.parse_args()
+
+  included = {-1}
+  for string in args.include:
+    include_range = string.split(':')
+    if len(include_range) == 1:
+      included.add(int(include_range[0]))
+    else:
+      for num in range(int(include_range[0]), int(include_range[1])):
+        included.add(num)
+
+  for string in args.exclude:
+    exclude_range = string.split(':')
+    if len(exclude_range) == 1:
+      try:
+        included.remove(int(exclude_range[0]))
+      except KeyError:
+        pass # Exclude works without a matching include
+    else:
+      for num in range(int(exclude_range[0]), int(exclude_range[1])):
+        included.remove(num)
+
+  for string in args.crash:
+    crash_combination = string.split('x')
+    fail = True
+    for crash in crash_combination:
+      if not int(crash) in included:
+        fail = False
+    if fail:
+      print 'Fail'
+      exit(1)
+  print 'Success'
+  exit(0)
+
+if __name__ == '__main__':
+  main()