def test_pagination_after_service_restart():
mocker = api_mock([second_page, first_page])
paginator = Paginator(options=options, api_adaptor=mocker)
paginator.next()
#fetch second page
items = unwrap(paginator.fetchPageItems())
#fetch first page
items = unwrap(paginator.fetchPageItems())
#persist
paginator.reset()
#restart opertion => new paginator
mocker = api_mock([third_page + second_page, first_page])
paginator = Paginator(options=options, api_adaptor=mocker)
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == third_page #only new items from page three should appear
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
def test_single_page():
paginator = Paginator(options=options, api_adaptor=api_mock(single_page))
paginator.next()
assert unwrap(paginator.fetchPageItems()) == first_page
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
def test_no_new_items():
paginator = Paginator(options=options,
api_adaptor=api_mock([first_page]),
state=State(last_item_id='1'))
paginator.next()
assert unwrap(paginator.fetchPageItems()) == None
paginator.next()
assert unwrap(paginator.fetchPageItems()) == None
def test_negative_max_pages():
paginator = Paginator(options={
**options,
**options_negative_max_page
},
api_adaptor=api_mock(two_pages),
state=State(last_item_id='5'))
is_available = paginator.next()
assert is_available == False
def test_one_item():
paginator = Paginator(options=options,
api_adaptor=api_mock([first_page]),
state=State(last_item_id='2'))
paginator.next()
assert unwrap(paginator.fetchPageItems()) == [{'id': '1'}]
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
def test_two_pages():
paginator = Paginator(options=options, api_adaptor=api_mock(two_pages))
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == first_page
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == second_page
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
def test_4_items():
paginator = Paginator(options=options,
api_adaptor=api_mock(two_pages),
state=State(last_item_id='5'))
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == first_page
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == [{'id': '4'}]
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
def test_state_based_pagination():
state = State()
assert state.last_item_id == ''
mocker = api_mock([first_page])
paginator = Paginator(options=options, api_adaptor=mocker, state=state)
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == first_page
mocker.setPages([second_page, first_page])
paginator.reset()
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == second_page
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
mocker.setPages([fourth_page, third_page, second_page, first_page])
paginator.reset()
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == fourth_page
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == third_page
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
mocker.setPages([fourth_page])
paginator.reset()
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == None
def test_max_pages():
paginator = Paginator(options={
**options,
**options_two_page
},
api_adaptor=api_mock(three_pages),
state=State(last_item_id='100'))
paginator.next()
items = unwrap(paginator.fetchPageItems())
assert items == first_page
is_available = paginator.next()
assert is_available == True
items = unwrap(paginator.fetchPageItems())
assert items == second_page
is_available = paginator.next()
assert is_available == False
def test_empty_page():
paginator = Paginator(options=options, api_adaptor=api_mock())
paginator.next()
assert unwrap(paginator.fetchPageItems()) == None