Mercurial > piecrust2

annotate tests/test_data_paginator.py @ 38:091f99bfbe44

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Fix running `chef` outside of a website. Slightly better error reporting.
author Ludovic Chabant <ludovic@chabant.com>
date Thu, 21 Aug 2014 10:56:17 -0700
parents f5ca5c5bed85
children f130365568ff
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6
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1 import math
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2 import pytest
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3 from piecrust.data.base import IPaginationSource
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4 from piecrust.data.paginator import Paginator
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5
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6
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7 class MockSource(list, IPaginationSource):
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8 def __init__(self, count):
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9 for i in range(count):
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10 self.append('item %d' % i)
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11
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12 def getItemsPerPage(self):
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13 return 5
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14
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15 def getSourceIterator(self):
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16 return None
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17
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18 def getSorterIterator(self, it):
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19 return None
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20
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21 def getTailIterator(self, it):
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22 return None
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23
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24 def getPaginationFilter(self, page):
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25 return None
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26
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27
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28 @pytest.mark.parametrize('uri, page_num, count', [
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29 ('', 1, 0),
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30 ('', 1, 4),
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31 ('', 1, 5),
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32 ('', 1, 8),
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33 ('', 1, 14),
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34 ('', 2, 8),
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35 ('', 2, 14),
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36 ('', 3, 14),
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37 ('blog', 1, 0),
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38 ('blog', 1, 4),
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39 ('blog', 1, 5),
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40 ('blog', 1, 8),
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41 ('blog', 1, 14),
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42 ('blog', 2, 8),
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43 ('blog', 2, 14),
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44 ('blog', 3, 14)
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45 ])
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46 def test_paginator(uri, page_num, count):
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47 source = MockSource(count)
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48 p = Paginator(None, source, uri, page_num)
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49
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50 if count <= 5:
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51 # All posts fit on the page
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52 assert p.prev_page_number is None
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53 assert p.prev_page is None
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54 assert p.this_page_number == 1
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55 assert p.this_page == uri
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56 assert p.next_page_number is None
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57 assert p.next_page is None
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58 elif page_num == 1:
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59 # First page in many
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60 assert p.prev_page_number is None
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61 assert p.prev_page is None
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62 assert p.this_page_number == 1
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63 assert p.this_page == uri
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64 assert p.next_page_number == 2
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65 np = '2' if uri == '' else (uri + '/2')
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66 assert p.next_page == np
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67 else:
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68 # Page in the middle of it all
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69 assert p.prev_page_number == page_num - 1
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70 if page_num == 2:
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71 assert p.prev_page == uri
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72 else:
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73 pp = str(page_num - 1) if uri == '' else (
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74 '%s/%d' % (uri, page_num - 1))
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75 assert p.prev_page == pp
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76
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77 assert p.this_page_number == page_num
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78 tp = str(page_num) if uri == '' else (
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79 '%s/%d' % (uri, page_num))
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80 assert p.this_page == tp
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81
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82 if page_num * 5 > count:
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83 assert p.next_page_number is None
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84 assert p.next_page is None
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85 else:
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86 assert p.next_page_number == page_num + 1
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87 np = str(page_num + 1) if uri == '' else (
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88 '%s/%d' % (uri, page_num + 1))
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89 assert p.next_page == np
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90
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91 assert p.total_post_count == count
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92 page_count = math.ceil(count / 5.0)
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93 assert p.total_page_count == page_count
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94 assert p.all_page_numbers() == list(range(1, page_count + 1))
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95
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96 for radius in range(1, 8):
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97 width = radius * 2 + 1
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98 if page_count == 0:
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99 nums = []
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100 else:
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101 nums = list(filter(
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102 lambda i: i >= 1 and i <= page_count,
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103 range(page_num - radius, page_num + radius + 1)))
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104 if len(nums) < width:
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105 to_add = width - len(nums)
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106 if nums[0] > 1:
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107 to_add = min(to_add, nums[0] - 1)
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108 nums = list(range(1, to_add + 1)) + nums
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109 else:
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110 to_add = min(to_add, page_count - nums[-1])
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111 nums = nums + list(range(nums[-1] + 1, nums[-1] + to_add + 1))
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112 assert nums == p.all_page_numbers(radius)
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113
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114 itp = count
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115 if count > 5:
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116 if page_num * 5 < count:
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117 itp = 5
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118 else:
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119 itp = count % 5
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120 assert p.items_this_page == itp
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121
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122 indices = list(range(count))
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123 indices = indices[(page_num - 1) * 5 : (page_num - 1) * 5 + itp]
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124 expected = list(['item %d' % i for i in indices])
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125 items = list(p.items)
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126 assert items == expected
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127