public async Task Index_ReturnsAViewResult_WithAListOfCompetitors()
{
// Arrange
var mockService = new Mock <ILeaderboardService>();
mockService.Setup(repo => repo.GetAllCompetitors()).Returns(Task.FromResult(GetTestCompetitors()));
var controller = new CompetitorsController(mockService.Object, null);
// Act
var result = await controller.Index();
// Assert
var viewResult = Xunit.Assert.IsType <ViewResult>(result);
var model = Xunit.Assert.IsAssignableFrom <IEnumerable <Competitor> >(
viewResult.ViewData.Model);
Xunit.Assert.Equal(4, model.Count());
}