public async Task FetchInvitationsAsync_WithUserId_ShouldBeOfTypeInvitationList()
{
// Arrange
var userId = new UserId();
TestMock.InvitationRepository.Setup(repository => repository.FetchAsync(It.IsAny <UserId>()))
.ReturnsAsync(
new List <Invitation>
{
new Invitation(userId, new ClanId()),
new Invitation(userId, new ClanId()),
new Invitation(userId, new ClanId())
})
.Verifiable();
var service = new InvitationService(TestMock.InvitationRepository.Object, TestMock.ClanRepository.Object);
// Act
var result = await service.FetchInvitationsAsync(new UserId());
// Assert
result.Should().BeOfType <List <Invitation> >();
TestMock.InvitationRepository.Verify(repository => repository.FetchAsync(It.IsAny <UserId>()), Times.Once);
}