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# --------------------------------------------------------------------------
#
# Copyright (c) Microsoft Corporation. All rights reserved.
#
# The MIT License (MIT)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the ""Software""), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# --------------------------------------------------------------------------
from azure.core.paging import ItemPaged
from azure.core.exceptions import HttpResponseError
import pytest
class TestPaging(object):
def test_basic_paging(self):
def get_next(continuation_token=None):
"""Simplify my life and return JSON and not response, but should be response."""
if not continuation_token:
return {"nextLink": "page2", "value": ["value1.0", "value1.1"]}
else:
return {"nextLink": None, "value": ["value2.0", "value2.1"]}
def extract_data(response):
return response["nextLink"], iter(response["value"])
pager = ItemPaged(get_next, extract_data)
result_iterated = list(pager)
assert ["value1.0", "value1.1", "value2.0", "value2.1"] == result_iterated
def test_by_page_paging(self):
def get_next(continuation_token=None):
"""Simplify my life and return JSON and not response, but should be response."""
if not continuation_token:
return {"nextLink": "page2", "value": ["value1.0", "value1.1"]}
else:
return {"nextLink": None, "value": ["value2.0", "value2.1"]}
def extract_data(response):
return response["nextLink"], iter(response["value"])
pager = ItemPaged(get_next, extract_data).by_page()
page1 = next(pager)
assert list(page1) == ["value1.0", "value1.1"]
page2 = next(pager)
assert list(page2) == ["value2.0", "value2.1"]
with pytest.raises(StopIteration):
next(pager)
def test_advance_paging(self):
def get_next(continuation_token=None):
"""Simplify my life and return JSON and not response, but should be response."""
if not continuation_token:
return {"nextLink": "page2", "value": ["value1.0", "value1.1"]}
else:
return {"nextLink": None, "value": ["value2.0", "value2.1"]}
def extract_data(response):
return response["nextLink"], iter(response["value"])
pager = ItemPaged(get_next, extract_data)
page1 = next(pager)
assert page1 == "value1.0"
page1 = next(pager)
assert page1 == "value1.1"
page2 = next(pager)
assert page2 == "value2.0"
page2 = next(pager)
assert page2 == "value2.1"
with pytest.raises(StopIteration):
next(pager)
def test_none_value(self):
def get_next(continuation_token=None):
return {"nextLink": None, "value": None}
def extract_data(response):
return response["nextLink"], iter(response["value"] or [])
pager = ItemPaged(get_next, extract_data)
result_iterated = list(pager)
assert len(result_iterated) == 0
def test_print(self):
def get_next(continuation_token=None):
return {"nextLink": None, "value": None}
def extract_data(response):
return response["nextLink"], iter(response["value"] or [])
pager = ItemPaged(get_next, extract_data)
output = repr(pager)
assert output.startswith("<iterator object azure.core.paging.ItemPaged at")
def test_paging_continue_on_error(self):
def get_next(continuation_token=None):
if not continuation_token:
return {"nextLink": "foo", "value": ["bar"]}
else:
raise HttpResponseError()
def extract_data(response):
return response["nextLink"], iter(response["value"] or [])
pager = ItemPaged(get_next, extract_data)
assert next(pager) == "bar"
with pytest.raises(HttpResponseError) as err:
next(pager)
assert err.value.continuation_token == "foo"
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