public void LegacyRouteFormat_ValidRoutes_MatchPreviousImplementationResult(string controller, string action, string area)
    {
        // Arrange
        var httpContext = Fixture.GetMvcSut(area, controller, action);

        // Act
        var filteredRoute = HttpContextExtensions.LegacyRouteFormat(httpContext);

        // Assert
        Assert.Equal(LegacyFormat(controller, action, area), filteredRoute);
    }
    public void LegacyRouteFormat_WithPathBase_MatchesExpectedRoute(string expectedRoute, string pathBase, string controller, string action, string area)
    {
        // Arrange
        var httpContext = Fixture.GetMvcSut(area, controller, action, pathBase);

        // Act
        var filteredRoute = HttpContextExtensions.LegacyRouteFormat(httpContext);

        // Assert
        Assert.Equal(expectedRoute, filteredRoute);
    }