src: Fixed FilePath::canonical() for UNIX

* fixed clang warnings
* fixed ApplicationSettings loaded from wrong location in tests
* added symlink within canonical path to tests

src/test/FilePathTestSuite.h

@@ -170,6 +170,16 @@ public:
 		TS_ASSERT_EQUALS(path.absolute(), path.canonical());
 	}
 
+	void test_file_path_canonical_removes_symlinks()
+	{
+#ifndef _WIN32
+		FilePath pathA("data/FilePathTestSuite/parent/target/d.cpp");
+		FilePath pathB("data/FilePathTestSuite/target/d.cpp");
+
+		TS_ASSERT_EQUALS(pathB.absolute(), pathA.canonical());
+#endif
+	}
+
 	void test_file_path_compares_paths_with_posix_and_windows_format()
 	{
 #ifdef _WIN32

src/test/TestSuiteFixture.cpp

@@ -1,6 +1,6 @@
 #include "TestSuiteFixture.h"
 
-#include <sstream>
+#include <iostream>
 
 #include "utility/logging/FileLogger.h"
 #include "utility/logging/LogManager.h"
@@ -15,8 +15,6 @@ TestSuiteFixture::~TestSuiteFixture()
 {
 }
 
-#include <iostream>
-
 bool TestSuiteFixture::setUpWorld()
 {
 	LogManager* logManager = LogManager::getInstance().get();