diff --git a/Word.cpp b/Word.cpp
index fcd0c6e..a716dd4 100644
--- a/Word.cpp
+++ b/Word.cpp
@@ -9,6 +9,11 @@ Word::Word(string word)
     str = word;
 }
 
+bool Word::operator<(const Word& w)
+{
+    //TODO organize by str?
+}
+
 void Word::sort()
 {
     //TODO
diff --git a/Word.h b/Word.h
index 82a0ebb..bed49e1 100644
--- a/Word.h
+++ b/Word.h
@@ -20,7 +20,7 @@ class Word {
 public:
     Word(string word);
     void sort();//sorts documents by index (doc with largest freq. goes first)
-
+    bool operator<(const Word& w);
     string getStr();
     vector<Document> getDocs();
     vector<int> getFrequency();
diff --git a/catchTests.cpp b/catchTests.cpp
index de6f441..3ea1054 100644
--- a/catchTests.cpp
+++ b/catchTests.cpp
@@ -5,15 +5,23 @@
 #include "DSAVLTree.h"
 
 TEST_CASE("DSAVLTree", "[template T]"){
-    SECTION("getHeight")
+    SECTION("operator = ")
     {
 
     }
-    SECTION("contains")
+    SECTION("deleteTree")
+    {
+
+    }
+    SECTION("copy")//probably wrong
+    {
+
+    }
+    SECTION("insert")
     {
 
     }
-    SECTION("clear")
+    SECTION("contains")
     {
 
     }
@@ -28,5 +36,13 @@ TEST_CASE("DSAVLTree", "[template T]"){
     SECTION("leftRotate")
     {
 
+    }
+    SECTION("doubleLeft")
+    {
+
+    }
+    SECTION("doubleRight")
+    {
+
     }
 }