def test_wrong_page_size(self, session, page_number, page_size):
query = session.query(User)
with pytest.raises(InvalidPage) as err:
apply_pagination(query, page_number, page_size)
expected_error = 'Page size should not be negative: {}'.format(
page_size)
assert error_value(err) == expected_error
def test_wrong_page_number_with_no_results(self, session, page_number,
page_size):
query = session.query(User)
with pytest.raises(InvalidPage) as err:
apply_pagination(query, page_number, page_size)
expected_error = 'Page number should be positive: {}'.format(
page_number)
assert error_value(err) == expected_error
def test_page_size_zero(self, session, page_number):
query = session.query(User)
page_size = 0
paginated_query, pagination = apply_pagination(query, page_number,
page_size)
assert query != paginated_query
assert Pagination(page_number=page_number,
page_size=0,
num_pages=0,
total_results=8) == pagination
result = paginated_query.all()
assert len(result) == 0
def test_page_number_greater_than_one(self, session, page_number):
query = session.query(User)
page_size = None
paginated_query, pagination = apply_pagination(query, page_number,
page_size)
assert query != paginated_query
assert Pagination(page_number=page_number,
page_size=8,
num_pages=1,
total_results=8) == pagination
result = paginated_query.all()
assert len(result) == 0
def test_page_size_and_page_number_provided(self, session):
query = session.query(User)
page_size = 2
page_number = 1
paginated_query, pagination = apply_pagination(query, page_number,
page_size)
assert query != paginated_query
assert Pagination(page_number=1,
page_size=2,
num_pages=0,
total_results=0) == pagination
result = paginated_query.all()
assert len(result) == 0
def test_get_individual_record(self, session):
query = session.query(User)
page_size = 1
page_number = 5
paginated_query, pagination = apply_pagination(query, page_number,
page_size)
assert query != paginated_query
assert Pagination(page_number=5,
page_size=1,
num_pages=8,
total_results=8) == pagination
result = paginated_query.all()
assert len(result) == 1
assert result[0].id == 5
def test_page_number_and_page_size_provided(self, session):
query = session.query(User)
page_size = 2
page_number = 3
paginated_query, pagination = apply_pagination(query, page_number,
page_size)
assert query != paginated_query
assert Pagination(page_number=3,
page_size=2,
num_pages=4,
total_results=8) == pagination
result = paginated_query.all()
assert len(result) == 2
assert result[0].id == 5
assert result[1].id == 6
def test_get_first_page(self, session):
query = session.query(User)
page_size = 2
page_number = 1
paginated_query, pagination = apply_pagination(query, page_number,
page_size)
assert query != paginated_query
assert Pagination(page_number=1,
page_size=2,
num_pages=4,
total_results=8) == pagination
result = paginated_query.all()
assert len(result) == 2
assert result[0].id == 1
assert result[1].id == 2
def test_first_page(self, session):
query = session.query(User)
page_size = None
page_number = 1
paginated_query, pagination = apply_pagination(query, page_number,
page_size)
assert query != paginated_query
assert Pagination(page_number=1,
page_size=8,
num_pages=1,
total_results=8) == pagination
result = paginated_query.all()
assert len(result) == 8
for i in range(8):
assert result[i].id == i + 1
def test_last_incomplete_page(self, session):
query = session.query(User)
page_size = 5
page_number = 2
paginated_query, pagination = apply_pagination(query, page_number,
page_size)
assert query != paginated_query
assert Pagination(page_number=2,
page_size=5,
num_pages=2,
total_results=8) == pagination
result = paginated_query.all()
assert len(result) == 3
assert result[0].id == 6
assert result[1].id == 7
assert result[2].id == 8
