tests: Added memory leak detection

git-svn-id: http://pugixml.googlecode.com/svn/trunk@165 99668b35-9821-0410-8761-19e4c4f06640

tests/main.cpp

@@ -3,10 +3,53 @@
 #include <exception>
 #include <stdio.h>
 
+#include <malloc.h>
+
 test_runner* test_runner::_tests = 0;
+size_t test_runner::_memory_fail_threshold = 0;
+
+size_t g_memory_total_size = 0;
+
+void* custom_allocate(size_t size)
+{
+	if (test_runner::_memory_fail_threshold > 0 && test_runner::_memory_fail_threshold < size)
+		return 0;
+	else
+	{
+		void* ptr = malloc(size);
+
+		g_memory_total_size += _msize(ptr);
+		
+		return ptr;
+	}
+}
+
+void custom_deallocate(void* ptr)
+{
+	if (ptr)
+	{
+		g_memory_total_size -= _msize(ptr);
+		
+		free(ptr);
+	}
+}
+
+void replace_memory_management()
+{
+	// create some document to touch original functions
+	{
+		pugi::xml_document doc;
+		doc.append_child().set_name("node");
+	}
+
+	// replace functions
+	pugi::set_memory_management_functions(custom_allocate, custom_deallocate);
+}
 
 int main()
 {
+	replace_memory_management();
+
 	unsigned int total = 0;
 	unsigned int passed = 0;
 
@@ -15,7 +58,14 @@ int main()
 		try
 		{
 			total++;
+
+			g_memory_total_size = 0;
+			test_runner::_memory_fail_threshold = 0;
+
 			test->run();
+
+			if (g_memory_total_size != 0) throw "Memory leaks found";
+
 			passed++;
 		}
 		catch (const std::exception& e)

tests/test.hpp

@@ -42,6 +42,7 @@ struct test_runner
 	test_runner* _next;
 
 	static test_runner* _tests;
+	static size_t _memory_fail_threshold;
 };
 
 struct dummy_fixture {};