Added DLIB_TEST and DLIB_TEST_MSG macros to the testing suite

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402974

dlib/test/tester.cpp

@@ -11,6 +11,25 @@ namespace test
 
     static dlib::mutex spinner_mutex;
 
+// -----------------------------------------------------------------------------
+
+    void check_test (
+        bool _exp,
+        long line,
+        const char* file,
+        const char* _exp_str
+    )
+    {
+        if ( !(_exp) )                                                         
+        {                                                                       
+            std::ostringstream dlib__out;                                       
+                dlib__out << "\n\nError occurred at line " << line << ".\n";    
+                dlib__out << "Error occurred in file " << file << ".\n";      
+                dlib__out << "Failing expression was " << _exp_str << ".\n";           
+                throw dlib::error(dlib__out.str());      
+        }
+    }                                                                      
+
 // -----------------------------------------------------------------------------
 
     map_of_testers& testers (

dlib/test/tester.h

@@ -17,6 +17,18 @@
 #endif
 
 
+#define DLIB_TEST(_exp) check_test(_exp, __LINE__, __FILE__, #_exp);
+
+#define DLIB_TEST_MSG(_exp,_message)                                        \
+    {if ( !(_exp) )                                                         \
+    {                                                                       \
+        std::ostringstream dlib__out;                                       \
+        dlib__out << "\n\nError occurred at line " << __LINE__ << ".\n";    \
+        dlib__out << "Error occurred in file " << __FILE__ << ".\n";      \
+        dlib__out << "Failing expression was " << #_exp << ".\n";           \
+        dlib__out << _message << "\n";                                      \
+        throw dlib::error(dlib__out.str());      \
+    }}                                                                      
 
 namespace test
 {
@@ -26,6 +38,15 @@ namespace test
     map_of_testers& testers (
     );
 
+// -----------------------------------------------------------------------------
+
+    void check_test (
+        bool _exp,
+        long line,
+        const char* file,
+        const char* _exp_str
+    );
+    
 // -----------------------------------------------------------------------------
 
     void print_spinner (