diff --git a/tests/test-encode-decode-data.cpp b/tests/test-encode-decode-data.cpp
index 0b4aa26..d550a16 100644
--- a/tests/test-encode-decode-data.cpp
+++ b/tests/test-encode-decode-data.cpp
@@ -59,7 +59,7 @@
 1
 };
 
-static void dumpData(const Data &data)
+static void dumpData(const Data& data)
 {
   cout << "name: " << data.getName().to_uri() << endl;
   if (data.getContent().size() > 0) {
@@ -173,7 +173,7 @@
     dumpData(freshData);
     ptr_lib::shared_ptr<vector<unsigned char> > freshEncoding = freshData.wireEncode();
     cout << "Freshly-signed Data signature verification: " << (KeyChain::selfVerifyData(&freshEncoding->front(), freshEncoding->size()) ? "VERIFIED" : "FAILED") << endl;
-  } catch (exception &e) {
+  } catch (exception& e) {
     cout << "exception: " << e.what() << endl;
   }
   return 0;
diff --git a/tests/test-encode-decode-forwarding-entry.cpp b/tests/test-encode-decode-forwarding-entry.cpp
index 89a7a80..dfa780e 100644
--- a/tests/test-encode-decode-forwarding-entry.cpp
+++ b/tests/test-encode-decode-forwarding-entry.cpp
@@ -57,12 +57,12 @@
 1
 };
 
-static inline string toString(const vector<unsigned char> &v)
+static inline string toString(const vector<unsigned char>& v)
 {
   return string(&v[0], &v[0] + v.size());
 }
 
-static void dumpForwardingEntry(const ForwardingEntry &forwardingEntry) 
+static void dumpForwardingEntry(const ForwardingEntry& forwardingEntry) 
 {
   cout << "action: " << forwardingEntry.getAction() << endl;
   cout << "prefix: " << forwardingEntry.getPrefix().to_uri() << endl;
@@ -89,7 +89,7 @@
  * Show the interest name and scope, and expect the name to have 4 components where the last component is a data packet 
  * whose content is a forwarding entry.
  */
-static void dumpInterestWithForwardingEntry(const Interest &interest)
+static void dumpInterestWithForwardingEntry(const Interest& interest)
 {
   if (interest.getName().getComponentCount() != 4) {
     cout << "Error: expected the interest name to have 4 components.  Got: " << interest.getName().to_uri() << endl;
@@ -129,7 +129,7 @@
     reDecodedInterest.wireDecode(*encoding);
     cout << "Re-decoded Interest:" << endl;
     dumpInterestWithForwardingEntry(reDecodedInterest);
-  } catch (exception &e) {
+  } catch (exception& e) {
     cout << "exception: " << e.what() << endl;
   }
   return 0;
diff --git a/tests/test-encode-decode-interest.cpp b/tests/test-encode-decode-interest.cpp
index 26d8269..ad638ce 100644
--- a/tests/test-encode-decode-interest.cpp
+++ b/tests/test-encode-decode-interest.cpp
@@ -30,7 +30,7 @@
 1
 };
 
-static void dumpInterest(const Interest &interest)
+static void dumpInterest(const Interest& interest)
 {
   cout << "name: " << interest.getName().to_uri() << endl;
   cout << "minSuffixComponents: ";
@@ -86,7 +86,7 @@
     reDecodedInterest.wireDecode(*encoding);
     cout << "Re-decoded Interest:" << endl;
     dumpInterest(reDecodedInterest);
-  } catch (exception &e) {
+  } catch (exception& e) {
     cout << "exception: " << e.what() << endl;
   }
   return 0;
diff --git a/tests/test-get-async.cpp b/tests/test-get-async.cpp
index da02c81..3c55b31 100644
--- a/tests/test-get-async.cpp
+++ b/tests/test-get-async.cpp
@@ -24,7 +24,7 @@
     callbackCount_ = 0;
   }
   
-  void onData(const ptr_lib::shared_ptr<const Interest> &interest, const ptr_lib::shared_ptr<Data> &data)
+  void onData(const ptr_lib::shared_ptr<const Interest>& interest, const ptr_lib::shared_ptr<Data>& data)
   {
     ++callbackCount_;
     cout << "Got data packet with name " << data->getName().to_uri() << endl;
@@ -33,7 +33,7 @@
     cout << endl;  
   }
 
-  void onTimeout(const ptr_lib::shared_ptr<const Interest> &interest)
+  void onTimeout(const ptr_lib::shared_ptr<const Interest>& interest)
   {
     ++callbackCount_;
     cout << "Time out for interest " << interest->getName().toUri() << endl;    
@@ -69,7 +69,7 @@
       // We need to sleep for a few milliseconds so we don't use 100% of the CPU.
       usleep(10000);
     }
-  } catch (std::exception &e) {
+  } catch (std::exception& e) {
     cout << "exception: " << e.what() << endl;
   }
   return 0;
diff --git a/tests/test-publish-async.cpp b/tests/test-publish-async.cpp
index 5358169..e28871c 100644
--- a/tests/test-publish-async.cpp
+++ b/tests/test-publish-async.cpp
@@ -23,7 +23,7 @@
   }
   
   void operator()
-     (const ptr_lib::shared_ptr<const Name> &prefix, const ptr_lib::shared_ptr<const Interest> &interest, Transport &transport) {
+     (const ptr_lib::shared_ptr<const Name>& prefix, const ptr_lib::shared_ptr<const Interest>& interest, Transport& transport) {
     ++interestCount_;
     
     // Make and sign a Data packet.
@@ -58,7 +58,7 @@
       // We need to sleep for a few milliseconds so we don't use 100% of the CPU.
       usleep(10000);
     }
-  } catch (std::exception &e) {
+  } catch (std::exception& e) {
     cout << "exception: " << e.what() << endl;
   }
   return 0;