修正一些错误定义

test/test_main.cpp

@@ -39,7 +39,7 @@ public:
         isExec = true;
     }
 
-    void pushData(unsigned char *data, int32_t size) const override {
+    void pushData(const unsigned char *data, int32_t size) const override {
         ::write(this->fd, &size, sizeof(int32_t));
         ::write(this->fd, data, size);
         ::write(this->fd, &DATA_STOP, sizeof(DATA_STOP));