diff --git a/test/algorithm_test.cc b/test/algorithm_test.cc
index 30d67dd..c374972 100644
--- a/test/algorithm_test.cc
+++ b/test/algorithm_test.cc
@@ -1,10 +1,7 @@
 #include <doctest/doctest.h>
 
-#include "graph/digraph.h"
-#include "graph/scc.h"
 #include "algorithm/tarjan.h"
-#include "algorithm/bfs.h"
-#include "algorithm/decremental_scc.h"
+#include "algorithm/breadth_first_search.h"
 
 using namespace graph;
 
@@ -30,7 +27,7 @@ TEST_SUITE("Algorithm") {
     REQUIRE_EQ(G.vertices.size(), 9);
 
     algo::Tarjan<std::uint16_t> tarjan(G);
-    auto res = tarjan.findSCC();
+    auto res = tarjan.execute();
 
     std::vector<std::vector<std::uint16_t>> exp = {
       {6, 8, 9},
@@ -63,7 +60,7 @@ TEST_SUITE("Algorithm") {
     REQUIRE_EQ(G.vertices.size(), 7);
 
     algo::Tarjan<std::uint16_t> tarjan(G);
-    auto res = tarjan.findSCC();
+    auto res = tarjan.execute();
 
     std::vector<std::vector<std::uint16_t>> exp = {
       {2, 5, 7},
@@ -92,8 +89,8 @@ TEST_SUITE("Algorithm") {
     G.insert(6, 3);
     G.insert(7, 2);
 
-    algo::BFS<std::uint16_t> bfs(G);
-    auto tree = bfs.run(1);
+    algo::BreadthFirstSearch<std::uint16_t> bfs(G);
+    auto tree = bfs.execute(1);
 
     /*std::map<std::uint16_t, std::set<std::uint16_t>> exp = {
       {1, {2, 4}},
@@ -115,36 +112,31 @@ TEST_SUITE("Algorithm") {
     CHECK_EQ(tree, exp);
   }
 
-  TEST_CASE("Roditty Zwick A1 T1 ") {
-    // 1 --> 2 --> 5 --> 7 --> 2
-    // 1 --> 4 --> 3 --> 1
-    //       4 --> 6 --> 3
+  
+
+  TEST_CASE("BFS") {
+    // 1 --> 2 --> 3 --> 1
+//             3 --> 4 --> 5 --> 3
+//       2 --> 6 --> 7 --> 8 --> 6
+//             6 --> 9 --> 10 --> 11 --> 12 --> 13 --> 9
+//                                       12 --> 10
     Digraph<std::uint16_t> G;
     G.insert(1, 2);
-    G.insert(1, 4);
-    G.insert(2, 5);
+    G.insert(2, 3);
     G.insert(3, 1);
-    G.insert(4, 3);
-    G.insert(4, 6);
-    G.insert(5, 7);
-    G.insert(6, 3);
-    G.insert(7, 2);
-
-    algo::DecrementalSCC<std::uint16_t> rz(G);
-    rz.init();
-
-    std::vector<std::vector<std::uint16_t>> exp = {
-      {2, 5, 7},
-      {1, 3, 4, 6}
-    };
-
-    CHECK_EQ(rz.query(1, 2), false);
-    CHECK_EQ(rz.query(1, 3), true);
-    CHECK_EQ(rz.query(1, 7), false);
-    CHECK_EQ(rz.query(2, 3), false);
-    CHECK_EQ(rz.query(2, 5), true);
-    CHECK_EQ(rz.query(5, 7), true);
-
-    //CHECK_EQ(rz.query(1, 2), true);
+    G.insert(3, 4);
+    G.insert(4, 5);
+    G.insert(5, 3);
+    G.insert(2, 6);
+    G.insert(6, 7);
+    G.insert(7, 8);
+    G.insert(8, 6);
+    G.insert(6, 9);
+    G.insert(9, 10);
+    G.insert(10, 11);
+    G.insert(11, 12);
+    G.insert(12, 13);
+    G.insert(13, 9);
+    G.insert(12, 10);
   }
 }
\ No newline at end of file
diff --git a/test/graph_test.cc b/test/graph_test.cc
index c6a380e..5593ca9 100644
--- a/test/graph_test.cc
+++ b/test/graph_test.cc
@@ -1,7 +1,6 @@
 #include <doctest/doctest.h>
 
 #include "graph/scc.h"
-#include "graph/digraph.h"
 #include "algorithm/tarjan.h"
 
 #include <vector>
@@ -44,7 +43,6 @@ TEST_SUITE("Graph") {
     };
     
     CHECK_EQ(RG.adjMatrix, exp);
-
   }
 
   TEST_CASE("SCC T1") {
@@ -67,7 +65,7 @@ TEST_SUITE("Graph") {
     REQUIRE_EQ(G.vertices.size(), 9);
 
     algo::Tarjan<std::uint16_t> tarjan(G);
-    auto sccs = tarjan.findSCC();
+    auto sccs = tarjan.execute();
   }
 
   TEST_CASE("SCC T2") {
@@ -88,6 +86,37 @@ TEST_SUITE("Graph") {
     REQUIRE_EQ(G.vertices.size(), 7);
 
     algo::Tarjan<std::uint16_t> tarjan(G);
-    auto sccs = tarjan.findSCC();
+    auto sccs = tarjan.execute();
+  }
+
+  TEST_CASE("SCC T3") {
+    // 1 --> 2 --> 3 --> 1
+    //             3 --> 4 --> 5 --> 3
+    //       2 --> 6 --> 7 --> 8 --> 6
+    //             6 --> 9 --> 10 --> 11 --> 12 --> 13 --> 9
+    //                                       12 --> 10
+    Digraph<std::uint16_t> G;
+    G.insert(1, 2);
+    G.insert(2, 3);
+    G.insert(3, 1);
+    G.insert(3, 4);
+    G.insert(4, 5);
+    G.insert(5, 3);
+    G.insert(2, 6);
+    G.insert(6, 7);
+    G.insert(7, 8);
+    G.insert(8, 6);
+    G.insert(6, 9);
+    G.insert(9, 10);
+    G.insert(10, 11);
+    G.insert(11, 12);
+    G.insert(12, 13);
+    G.insert(13, 9);
+    G.insert(12, 10);
+
+    REQUIRE_EQ(G.vertices.size(), 13);
+
+    algo::Tarjan<std::uint16_t> tarjan(G);
+    auto sccs = tarjan.execute();
   }
 }
\ No newline at end of file
diff --git a/test/roditty_zwick_test.cc b/test/roditty_zwick_test.cc
new file mode 100644
index 0000000..040557b
--- /dev/null
+++ b/test/roditty_zwick_test.cc
@@ -0,0 +1,43 @@
+#include <doctest/doctest.h>
+
+#include "algorithm/decremental_scc.h"
+#include "algorithm/decremental_tc.h"
+
+using namespace graph;
+
+TEST_SUITE("Roditty and Zwick") {
+
+  TEST_CASE("Roditty Zwick A1 T1 ") {
+    // 1 --> 2 --> 5 --> 7 --> 2
+    // 1 --> 4 --> 3 --> 1
+    //       4 --> 6 --> 3
+    Digraph<std::uint16_t> G;
+    G.insert(1, 2);
+    G.insert(1, 4);
+    G.insert(2, 5);
+    G.insert(3, 1);
+    G.insert(4, 3);
+    G.insert(4, 6);
+    G.insert(5, 7);
+    G.insert(6, 3);
+    G.insert(7, 2);
+
+    algo::DecrementalSCC<std::uint16_t> rz(G);
+    rz.init();
+
+    std::vector<std::vector<std::uint16_t>> exp = {
+      {2, 5, 7},
+      {1, 3, 4, 6}
+    };
+
+    CHECK_EQ(rz.query(1, 2), false);
+    CHECK_EQ(rz.query(1, 3), true);
+    CHECK_EQ(rz.query(1, 7), false);
+    CHECK_EQ(rz.query(2, 3), false);
+    CHECK_EQ(rz.query(2, 5), true);
+    CHECK_EQ(rz.query(5, 7), true);
+
+    //CHECK_EQ(rz.query(1, 2), true);
+  }
+
+}
\ No newline at end of file
diff --git a/test/tree_test.cc b/test/tree_test.cc
index 30057d8..fb27811 100644
--- a/test/tree_test.cc
+++ b/test/tree_test.cc
@@ -1,12 +1,7 @@
 #include <doctest/doctest.h>
 
-#include "graph/scc.h"
-#include "graph/digraph.h"
-#include "algorithm/tarjan.h"
 #include "tree/breadth_first_tree.h"
 
-#include <vector>
-
 using namespace graph;
 using namespace tree;
 
@@ -27,7 +22,7 @@ TEST_SUITE("Tree") {
     G.insert(6, 3);
     G.insert(7, 2);
 
-    BreadthFirstTree<std::uint16_t> tree(G);
+    BreadthFirstTree<std::uint16_t> tree(G, 1);
 
     std::map<std::uint16_t, std::set<std::uint16_t>> exp = {
       {1, {2, 4}},