ошибка LNK2019 в модульных тестах (CppUnitTestFramework)

Я пытаюсь написать 3 UnitTests.
При сборке я получаю ошибку фатальная ошибка LNK1120: 1 неразрешенная внешность.
Подскажите в каком направлении искать!

Полностью ошибка:
1> ProcessorsTests.obj: ошибка LNK2019: неразрешенный внешний символ «public: статический класс IProcessor * __cdecl Processor_factory :: create_processor (char)» (? Create_processor @ Processor_factory @@ SAPAVIProcessor @@ D @ Z)
упоминается в функции «public: void __thiscall Luxoft_TestTests :: ProcessorsTests :: ProcessorAStartProcessor_NormalString_ReversedStringReturned (void)» (?

#include "stdafx.h"#include "CppUnitTest.h"#include <vector>
#include "../../../../../../Data/Cygwin/home/Nik/Luxoft_Test/Luxoft_Test/IProcessor.h"#include "../../../../../../Data/Cygwin/home/Nik/Luxoft_Test/Luxoft_Test/Factory.h"#include "../../../../../../Data/Cygwin/home/Nik/Luxoft_Test/Luxoft_Test/Processor.h"using namespace std;
using namespace Microsoft::VisualStudio::CppUnitTestFramework;

namespace Luxoft_TestTests
{
TEST_CLASS(ProcessorsTests)
{
public :

TEST_METHOD(ProcessorAStartProcessor_NormalString_ReversedStringReturned)
{
// arrange
vector<string> example = { "This is normal text" };
const vector<string> expected = { "text normal is This" };

// action
IProcessor* pr = Processor_factory::create_processor('A');
const vector<string> actual = pr->Start_processor(example);
delete pr;

// assert
Assert::IsTrue(equal(example.begin(), example.end(), expected.begin()));

const char* message = "TestA passed";
Logger::WriteMessage(message);
}

TEST_METHOD(ProcessorBStartProcessor_StringWithPoints_CommasReplacingPointsReturned)
{
// arrange
vector<string> example = { "This.Is.Text.With.Punctuation" };
vector<string> expected = { "This,Is,Text,With,Punctuation" };

// action
IProcessor* pr = Processor_factory::create_processor('B');
vector<string> actual = pr->Start_processor(example);
delete pr;

// assert
Assert::IsTrue(equal(example.begin(), example.end(), expected.begin()));

const char* message = "TestB passed";
Logger::WriteMessage(message);
}

TEST_METHOD(ProcessorCStartProcessor_StringWithSpaces_StringWithoutSpacesReturned)
{
// arrange
vector<string> example = { "This is my text with spaces" };
vector<string> expected = { "Thisismytextwithspaces" };

// action
IProcessor* pr = Processor_factory::create_processor('C');
vector<string> actual = pr->Start_processor(example);
delete pr;

// assert
Assert::IsTrue(equal(example.begin(), example.end(), expected.begin()));

const char* message = "TestC passed";
Logger::WriteMessage(message);

}

};
}