public async Task GetStatistics_MemberIdIsValide_ShouldReturnMemberStatistics()
{
// arrange
var memberId = _fixture.Create <int>();
var expectedMemberName = _fixture.Create <string>();
var expectedMembers = _fixture.Build <MemberStatistic>()
.With(x => x.MemberName, expectedMemberName)
.CreateMany()
.ToArray();
_membersRepositoryMock.Setup(x => x.GetStatistics(memberId))
.ReturnsAsync(expectedMembers);
// act
var memberStatisrics = await _service.GetStatistics(memberId);
// assert
memberStatisrics.Should()
.NotBeNull()
.And
.HaveCount(expectedMembers.Length)
.And
.Match <MemberStatistic[]>(x => x.All(f => f.MemberName == expectedMemberName));
_membersRepositoryMock.Verify(x => x.GetStatistics(memberId), Times.Once);
}