Initial batch of mocks for host side testing

tests/host/common/spiffs_mock.h

@@ -0,0 +1,27 @@
+//
+//  spiffs_mock.hpp
+//  esp8266-host-tests
+//
+//  Created by Ivan Grokhotkov on 03/03/16.
+//  Copyright © 2016 esp8266.com. All rights reserved.
+//
+
+#ifndef spiffs_mock_hpp
+#define spiffs_mock_hpp
+
+#include <stdint.h>
+#include <stddef.h>
+#include <vector>
+#include <FS.h>
+
+class SpiffsMock {
+public:
+    SpiffsMock(size_t fs_size, size_t fs_block, size_t fs_page);
+    ~SpiffsMock();
+    
+protected:
+    std::vector<uint8_t> m_fs;
+};
+
+
+#endif /* spiffs_mock_hpp */