appengine/monorail/framework/test/paginate_test.py

# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is govered by a BSD-style
# license that can be found in the LICENSE file or at
# https://developers.google.com/open-source/licenses/bsd

"""Unit tests for pagination classes."""

import unittest

from framework import paginate
from testing import testing_helpers


class PaginateTest(unittest.TestCase):

  def testVirtualPagination(self):
    # Paginating 0 results on a page that can hold 100.
    mr = testing_helpers.MakeMonorailRequest(path='/issues/list')
    vp = paginate.VirtualPagination(mr, 0, 100)
    self.assertEquals(vp.num, 100)
    self.assertEquals(vp.start, 1)
    self.assertEquals(vp.last, 0)
    self.assertFalse(vp.visible)

    # Paginationg 12 results on a page that can hold 100.
    mr = testing_helpers.MakeMonorailRequest(path='/issues/list')
    vp = paginate.VirtualPagination(mr, 12, 100)
    self.assertEquals(vp.num, 100)
    self.assertEquals(vp.start, 1)
    self.assertEquals(vp.last, 12)
    self.assertTrue(vp.visible)

    # Paginationg 12 results on a page that can hold 10.
    mr = testing_helpers.MakeMonorailRequest(path='/issues/list?num=10')
    vp = paginate.VirtualPagination(mr, 12, 100)
    self.assertEquals(vp.num, 10)
    self.assertEquals(vp.start, 1)
    self.assertEquals(vp.last, 10)
    self.assertTrue(vp.visible)

    # Paginationg 12 results starting at 5 on page that can hold 10.
    mr = testing_helpers.MakeMonorailRequest(
        path='/issues/list?start=5&num=10')
    vp = paginate.VirtualPagination(mr, 12, 100)
    self.assertEquals(vp.num, 10)
    self.assertEquals(vp.start, 6)
    self.assertEquals(vp.last, 12)
    self.assertTrue(vp.visible)

    # Paginationg 123 results on a page that can hold 100.
    mr = testing_helpers.MakeMonorailRequest(path='/issues/list')
    vp = paginate.VirtualPagination(mr, 123, 100)
    self.assertEquals(vp.num, 100)
    self.assertEquals(vp.start, 1)
    self.assertEquals(vp.last, 100)
    self.assertTrue(vp.visible)

    # Paginationg 123 results on second page that can hold 100.
    mr = testing_helpers.MakeMonorailRequest(path='/issues/list?start=100')
    vp = paginate.VirtualPagination(mr, 123, 100)
    self.assertEquals(vp.num, 100)
    self.assertEquals(vp.start, 101)
    self.assertEquals(vp.last, 123)
    self.assertTrue(vp.visible)

    # Paginationg a huge number of objects will show at most 5000 per page.
    mr = testing_helpers.MakeMonorailRequest(path='/issues/list?num=9999')
    vp = paginate.VirtualPagination(mr, 12345, 100)
    self.assertEquals(vp.num, 1000)
    self.assertEquals(vp.start, 1)
    self.assertEquals(vp.last, 1000)
    self.assertTrue(vp.visible)


if __name__ == '__main__':
  unittest.main()