test: bug fixes

Fixed several platform specific bugs.

src/lib/data/graph/filter/GraphFilter.h

@@ -11,7 +11,7 @@ public:
 	GraphFilter();
 	virtual ~GraphFilter();
 
-	void apply(const FilterableGraph* in, FilterableGraph* out);
+	virtual void apply(const FilterableGraph* in, FilterableGraph* out);
 
 protected:
 	virtual void visitNode(Node* node);

src/lib/data/graph/filter/GraphFilterImplementations.h

@@ -267,7 +267,7 @@ public:
 	{
 	}
 
-	void apply(const FilterableGraph* in, FilterableGraph* out)
+	virtual void apply(const FilterableGraph* in, FilterableGraph* out)
 	{
 		if (m_tokenIds.size())
 		{
@@ -296,8 +296,8 @@ protected:
 	}
 
 private:
-	const std::string& m_tokenName;
-	const std::set<Id>& m_tokenIds;
+	const std::string m_tokenName;
+	const std::set<Id> m_tokenIds;
 };
 
 #endif // GRAPH_FILTER_IMPLEMENTATIONS_H

src/lib/data/query/QueryTree.cpp

@@ -162,7 +162,7 @@ std::shared_ptr<QueryNode> QueryTree::buildGroup(std::deque<std::string>& tokens
 	char delimiter = QueryOperator::getOperator(closeType);
 	bool valid = true;
 
-	while (tokens.front() != std::string(1, delimiter) && tokens.size())
+	while (tokens.size() > 0 && tokens.front() != std::string(1, delimiter))
 	{
 		group.push_back(tokens.front());
 		name += tokens.front();