public void GetChapterStatisticsAsyncShouldRetrieveAssignmentsWithLastResultsOfMultipleUsersAndConvertThemToStatistics()
{
//Arrange
var chapterId = _random.NextPositive();
var nowUtc = DateTime.UtcNow;
var assignmentWithResultsOfMultipleUsers = new AssignmentWithLastResultsOfMultipleUsers();
var assignmentsWithLastResultsOfMultipleUsers = new List <AssignmentWithLastResultsOfMultipleUsers> {
assignmentWithResultsOfMultipleUsers
};
_testResultRepositoryMock
.Setup(repo => repo.GetLastTestResultsOfChapterAsync(It.IsAny <int>(), It.IsAny <DateTime?>()))
.ReturnsAsync(assignmentsWithLastResultsOfMultipleUsers);
var assignmentStatisticsDto = new AssignmentStatisticsDto();
_testResultConverterMock
.Setup(converter => converter.ToAssignmentStatisticsDto(It.IsAny <AssignmentWithLastResultsOfMultipleUsers>()))
.Returns(assignmentStatisticsDto);
//Act
var results = _service.GetChapterStatisticsAsync(chapterId, nowUtc).Result;
//Assert
Assert.That(results, Has.Exactly(1).EqualTo(assignmentStatisticsDto));
_testResultRepositoryMock.Verify(repo => repo.GetLastTestResultsOfChapterAsync(chapterId, nowUtc), Times.Once);
_testResultConverterMock.Verify(converter => converter.ToAssignmentStatisticsDto(assignmentWithResultsOfMultipleUsers), Times.Once);
}