public SearchFightModelTests()
 {
     //  arrange
     _engine1 = A.Fake <ISearchEngine>(options => options.WithAttributes(() => new SearchEngineMetadataAttribute(nameof(_engine1), "")));
     _engine2 = A.Fake <ISearchEngine>(options => options.WithAttributes(() => new SearchEngineMetadataAttribute(nameof(_engine2), "")));
     _engine3 = A.Fake <ISearchEngine>(options => options.WithAttributes(() => new SearchEngineMetadataAttribute(nameof(_engine3), "")));
     A.CallTo(() => _engine1.GetSearchTotalCount(".net")).Returns(100);
     A.CallTo(() => _engine1.GetSearchTotalCount("java")).Returns(55);
     A.CallTo(() => _engine2.GetSearchTotalCount(".net")).Returns(150);
     A.CallTo(() => _engine2.GetSearchTotalCount("java")).Returns(23);
     A.CallTo(() => _engine3.GetSearchTotalCount(".net")).Returns(78);
     A.CallTo(() => _engine3.GetSearchTotalCount("java")).Returns(455);
 }