public async Task GetGroupByIdHandler_ShouldReturnGroup_WhenGroupExists()
{
// Arrange
GetGroupByIdQuery request = new GetGroupByIdQuery {
GroupId = 1
};
IEnumerable <Group> expectedGroups = new[]
{
new Group {
GroupId = 1
}
};
IQueryable <Group> queryableMock = expectedGroups
.AsQueryable()
.BuildMock()
.Object;
_unitOfWorkMock
.Setup(m => m.Groups.GetById(request.GroupId))
.Returns(queryableMock);
GetGroupByIdQuery.Handler handler = new GetGroupByIdQuery.Handler(_mapperMock, _unitOfWorkMock.Object);
// Act
GroupResource group = await handler.Handle(request);
// Assert
Assert.NotNull(group);
Assert.Equal(request.GroupId, group.GroupId);
}
public async Task GetGroupByIdHandler_ShouldReturnNull_WhenGroupDoesNotExist()
{
// Arrange
GetGroupByIdQuery request = new GetGroupByIdQuery {
GroupId = 3891
};
IQueryable <Group> emptyQueryable = Enumerable
.Empty <Group>()
.AsQueryable()
.BuildMock()
.Object;
_unitOfWorkMock
.Setup(m => m.Groups.GetById(request.GroupId))
.Returns(emptyQueryable);
GetGroupByIdQuery.Handler handler = new GetGroupByIdQuery.Handler(_mapperMock, _unitOfWorkMock.Object);
// Act
GroupResource group = await handler.Handle(request);
// Assert
Assert.Null(group);
}