core: slim down `common.hpp`

Change-Id: I875c35147edd2261fbaa24e809c170d5cd9b94d3
diff --git a/tests/daemon/fw/best-route-strategy.t.cpp b/tests/daemon/fw/best-route-strategy.t.cpp
index ce408ec..004b4f2 100644
--- a/tests/daemon/fw/best-route-strategy.t.cpp
+++ b/tests/daemon/fw/best-route-strategy.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Regents of the University of California,
+ * Copyright (c) 2014-2024,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -92,7 +92,7 @@
 
   // downstream retransmits frequently, but the strategy should not send Interests
   // more often than DEFAULT_MIN_RETX_INTERVAL
-  scheduler::EventId retxFrom4Evt;
+  ndn::scheduler::EventId retxFrom4Evt;
   size_t nSentLast = strategy.sendInterestHistory.size();
   auto timeSentLast = time::steady_clock::now();
   std::function<void()> periodicalRetxFrom4; // let periodicalRetxFrom4 lambda capture itself
diff --git a/tests/daemon/fw/dummy-strategy.hpp b/tests/daemon/fw/dummy-strategy.hpp
index a4cc414..4ce6f40 100644
--- a/tests/daemon/fw/dummy-strategy.hpp
+++ b/tests/daemon/fw/dummy-strategy.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Regents of the University of California,
+ * Copyright (c) 2014-2024,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -28,6 +28,8 @@
 
 #include "fw/strategy.hpp"
 
+#include <limits>
+
 namespace nfd::tests {
 
 /**
diff --git a/tests/daemon/fw/multicast-strategy.t.cpp b/tests/daemon/fw/multicast-strategy.t.cpp
index a69c3a5..aa18cdf 100644
--- a/tests/daemon/fw/multicast-strategy.t.cpp
+++ b/tests/daemon/fw/multicast-strategy.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Regents of the University of California,
+ * Copyright (c) 2014-2024,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -173,7 +173,7 @@
 
   // downstream retransmits frequently, but the strategy should not send Interests
   // more often than DEFAULT_MIN_RETX_INTERVAL
-  scheduler::EventId retxFrom4Evt;
+  ndn::scheduler::EventId retxFrom4Evt;
   size_t nSentLast = strategy.sendInterestHistory.size();
   auto timeSentLast = time::steady_clock::now();
   std::function<void()> periodicalRetxFrom4; // let periodicalRetxFrom4 lambda capture itself
diff --git a/tests/daemon/fw/random-strategy.t.cpp b/tests/daemon/fw/random-strategy.t.cpp
index ae34b03..d2173b5 100644
--- a/tests/daemon/fw/random-strategy.t.cpp
+++ b/tests/daemon/fw/random-strategy.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Regents of the University of California,
+ * Copyright (c) 2014-2024,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -24,12 +24,13 @@
  */
 
 #include "fw/random-strategy.hpp"
-#include "common/global.hpp"
 
 #include "tests/test-common.hpp"
 #include "tests/daemon/face/dummy-face.hpp"
 #include "strategy-tester.hpp"
 
+#include <unordered_map>
+
 namespace nfd::tests {
 
 using RandomStrategyTester = StrategyTester<fw::RandomStrategy>;
diff --git a/tests/daemon/fw/topology-tester.hpp b/tests/daemon/fw/topology-tester.hpp
index e82705c..5264306 100644
--- a/tests/daemon/fw/topology-tester.hpp
+++ b/tests/daemon/fw/topology-tester.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2023,  Regents of the University of California,
+ * Copyright (c) 2014-2024,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -38,6 +38,8 @@
 
 #include <ndn-cxx/face.hpp>
 
+#include <unordered_map>
+
 namespace nfd::tests {
 
 /** \brief Identifies a node (forwarder) in the topology.