improve test traversal tool

Author: kripken

tests/traverse.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python2
+
+'''
+simple tool to run emcc and clang on C testcases each in a separate subdir of the current dir
+'''
+
+import os, sys
+
+__rootpath__ = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+def path_from_root(*pathelems):
+  return os.path.join(__rootpath__, *pathelems)
+sys.path += [path_from_root('')]
+import tools.shared
+from tools.shared import *
+
+curr = os.getcwd()
+
+for d in os.listdir(curr):
+  print '(' + d + ') ',
+  os.chdir(curr)
+  if os.path.isdir(d):
+    os.chdir(d)
+    for c in os.listdir('.'):
+      if c.endswith('.c'):
+        execute([EMCC, c, '-O2', '--embed-file', 'input.txt'])
+        js = jsrun.run_js('a.out.js', filter(lambda x: x != '-w', SPIDERMONKEY_ENGINE), stdout=PIPE)
+
+        execute([CLANG_CC, '-m32', c])
+        n1 = execute(['./a.out'], stdout=PIPE)[0]
+
+        execute([CLANG_CC, '-m32', c, '-O2'])
+        n2 = execute(['./a.out'], stdout=PIPE)[0]
+
+        execute(['gcc', c, '-m32'])
+        n3 = execute(['./a.out'], stdout=PIPE)[0]
+
+        if js == n1:
+          print 'ok'
+        elif js == n2:
+          print 'emcc and clang -O2 both equally wrong'
+        elif js == n3:
+          print 'emcc agrees with gcc, so probably ok'
+        else:
+          print
+          print 'js  ', js,
+          print 'c0  ', n1,
+          print 'c2  ', n2,
+          print 'g   ', n3,
+          print 'fail!!!', d
+