[svn r4447] better test output

--HG--
branch : trunk

1 files changed, 18 insertions, 5 deletions

diff --git a/bisect_crashes.py b/bisect_crashes.py
index 1015e7e1..b345996d 100644
--- a/bisect_crashes.py
+++ b/bisect_crashes.py
@@ -13,16 +13,25 @@ sys.path.insert(1, test_base_path)
 import test
 
 cfg = test.Options()
-cfg.verbosity = 1
+cfg.verbosity = 0
 cfg.basedir = test_base_path
 cfg.unit_tests = True
 
+def write(line, *args):
+    if args:
+        line = line % args
+    sys.stderr.write(line + '\n')
+
+
 def find_tests():
     test_files = test.get_test_files(cfg)
     return test.get_test_cases(test_files, cfg)
 
 def run_tests(test_cases):
-    print('Running subset of %d tests' % len(test_cases))
+    if not test_cases:
+        return True
+    write('Running subset of %d tests [%s .. %s]',
+          len(test_cases), test_cases[0].id(), test_cases[-1].id())
     pid = os.fork()
     if not pid:
         # child executes tests
@@ -36,25 +45,29 @@ def run_tests(test_cases):
 
 def bisect_tests():
     tests = find_tests()
-    print('Found %d tests' % len(tests))
+    write('Found %d tests', len(tests))
     shift = len(tests) // 4
+    last_failed = False
     while len(tests) > 1 and shift > 0:
         mid = len(tests) // 2 + 1
         left, right = tests[:mid], tests[mid:]
 
         if not run_tests(left):
+            last_failed = True
             tests = left
             shift = len(tests) // 4 + 1
             break
         if not run_tests(right):
+            last_failed = True
             tests = right
             shift = len(tests) // 4 + 1
             break
 
+        last_failed = False
         shift //= 2
         tests = tests[shift:] + tests[:shift]
     # looks like we can't make the set of tests any smaller
-    return tests
+    return last_failed and tests or []
 
 if __name__ == '__main__':
-    print('\n'.join([test.id() for test in bisect_tests()]))
+    write('Failing tests:\n%s', '\n'.join([test.id() for test in bisect_tests()]))