Fix python3 unit tests

Milter/test.py

@@ -63,10 +63,7 @@ class TestBase(object):
       syms = self._symlist[stage]
       if syms is not None and name not in syms:
         return None
-    r = self._macros.get(name,None)
-    if r is not None:
-      return r.decode()
-    return r
+    return self._macros.get(name,None)
 
   def replacebody(self,chunk):
     if self._body:

Milter/testctx.py

@@ -63,13 +63,13 @@ class TestCtx(object):
   def getsymval(self,name):
     stage = self._stage
     if stage >= 0:
+      try:
+        s = name.encode('utf8')
+      except: pass
       syms = self._symlist[stage]
-      if syms is not None and name not in syms:
+      if syms is not None and s not in syms:
         return None
-    r = self._macros.get(name,None)
-    if r is not None:
-      return r.decode()
-    return r
+    return self._macros.get(name,None)
 
   def _setsymval(self,name,val):
     self._macros[name] = val

testsample.py

@@ -46,7 +46,7 @@ class BMSMilterTestCase(unittest.TestCase):
     self.assertTrue(rc == Milter.CONTINUE)
     rc = milter.feedMsg(fname)
     self.assertTrue(milter.user == 'batman',"getsymval failed")
-    # setsymlist not called yet in sampleMilter
+    # setsymlist not working in TestBase
     #self.assertTrue(milter.auth_type != 'batcomputer',"setsymlist failed")
     self.assertTrue(rc == Milter.ACCEPT)
     self.assertTrue(milter._bodyreplaced,"Message body not replaced")