fixed missing imports

have mulitple test files

cpp/board.cpp

@@ -1,6 +1,4 @@
 #include <cctype>
-#include <ios>
-#include <iostream>
 #include <map>
 #include <string>
 
@@ -25,7 +23,7 @@ enum CastleRights {
 };
 
 class Board {
-  public: // make this private after debugging
+  private:
     int squares[64] = {Piece::None};
     Colour turn;
     int castle_rights;

cpp/main.cpp

@@ -1,5 +1,7 @@
 #include "board.cpp"
 
+#include <iostream>
+
 int main(int argc, char* argv[]) {
     std::string pos =
         "rnbq1k1r/pp1Pbppp/2p5/8/2B5/8/PPP1NnPP/RNBQK2R w KQ - 1 8";

cpp/tests/fen.cpp

@@ -1,20 +1,5 @@
 #include "../board.cpp"
-
-#define IS_TRUE(x)                                                             \
-    {                                                                          \
-        if (!(x))                                                              \
-            std::cout << __FUNCTION__ << " failed on line " << __LINE__        \
-                      << std::endl;                                            \
-    }
-
-#define ASSERT_EQUALS(expected, actual)                                        \
-    {                                                                          \
-        if (expected != actual)                                                \
-            std::cout << "Expected: " << std::endl                             \
-                      << '\t' << expected << std::endl                         \
-                      << "Got: " << std::endl                                  \
-                      << '\t' << actual << std::endl;                          \
-    }
+#include "lib.cpp"
 
 int main() {
     std::string pos = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR";

cpp/tests/lib.cpp

@@ -0,0 +1,10 @@
+#pragma once
+
+#define ASSERT_EQUALS(expected, actual)                                        \
+    {                                                                          \
+        if (expected != actual)                                                \
+            std::cout << "Expected: " << std::endl                             \
+                      << '\t' << expected << std::endl                         \
+                      << "Got: " << std::endl                                  \
+                      << '\t' << actual << std::endl;                          \
+    }