diff --git a/src/SegmentBase.hpp b/src/SegmentBase.hpp
index 4fe73b2..ee990ac 100644
--- a/src/SegmentBase.hpp
+++ b/src/SegmentBase.hpp
@@ -26,14 +26,14 @@ namespace CppJieba
             virtual bool cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<string>& res)const = 0;
             virtual bool cut(const string& str, vector<string>& res)const
             {
-                if(!_getInitFlag())
-                {
-                    LogError("not inited.");
-                    return false;
-                }
+                assert(_getInitFlag());
+                //if(!_getInitFlag())
+                //{
+                //    LogError("not inited.");
+                //    return false;
+                //}
                 Unicode unico;
 #ifdef NO_FILTER
-                unico.clear();
                 if(!TransCode::decode(str, unico))
                 {
                     LogFatal("str[%s] decode failed.", str.c_str());
diff --git a/test/unittest/TMixSegment.cpp b/test/unittest/TMixSegment.cpp
index f9e0b9e..efeb333 100644
--- a/test/unittest/TMixSegment.cpp
+++ b/test/unittest/TMixSegment.cpp
@@ -6,10 +6,16 @@ using namespace CppJieba;
 TEST(MixSegmentTest, Test1)
 {
     MixSegment segment("../dicts/jieba.dict.utf8", "../dicts/hmm_model.utf8");;
-    const char* str = "我来自北京邮电大学。。。学号 123456";
-    const char* res[] = {"我", "来自", "北京邮电大学", "。","。","。","。","学号", " 123456"};
-    string s;
-    vector<string> buf(res, res + sizeof(res)/sizeof(res[0]));
+    const char* str = "我来自北京邮电大学。。。  学号 123456";
+    const char* res[] = {"我", "来自", "北京邮电大学", "。","。","。","  ","学号", " 123456"};
+    //string s;
+    //vector<string> buf(res, res + sizeof(res)/sizeof(res[0]));
+    vector<string> words;
+    ASSERT_EQ(segment.init(), true);
+    ASSERT_EQ(segment.cut(str, words), true);
+    EXPECT_EQ(words, vector<string>(res, res + sizeof(res)/sizeof(res[0])));
+    //print(words);
+    
     //for(uint i = 0; i < sizeof(res)/sizeof(res[0]); i++)
     //{
     //    buf.push_back()