Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/generators/tests/test_interval_graph.py @ 0:4f3585e2f14b draft default tip
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author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """Unit tests for the :mod:`networkx.generators.interval_graph` module. |
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2 |
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3 """ |
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4 import math |
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5 import pytest |
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6 |
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7 import networkx as nx |
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8 from networkx.generators.interval_graph import interval_graph |
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9 from networkx.testing import assert_edges_equal |
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10 |
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11 |
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12 class TestIntervalGraph: |
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13 """Unit tests for :func:`networkx.generators.interval_graph.interval_graph`""" |
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14 |
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15 def test_empty(self): |
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16 """ Tests for trivial case of empty input""" |
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17 assert len(interval_graph([])) == 0 |
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18 |
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19 def test_interval_graph_check_invalid(self): |
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20 """ Tests for conditions that raise Exceptions """ |
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21 |
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22 invalids_having_none = [None, (1, 2)] |
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23 with pytest.raises(TypeError): |
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24 interval_graph(invalids_having_none) |
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25 |
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26 invalids_having_set = [{1, 2}] |
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27 with pytest.raises(TypeError): |
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28 interval_graph(invalids_having_set) |
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29 |
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30 invalids_having_seq_but_not_length2 = [(1, 2, 3)] |
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31 with pytest.raises(TypeError): |
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32 interval_graph(invalids_having_seq_but_not_length2) |
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33 |
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34 invalids_interval = [[3, 2]] |
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35 with pytest.raises(ValueError): |
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36 interval_graph(invalids_interval) |
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37 |
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38 def test_interval_graph_0(self): |
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39 intervals = [(1, 2), (1, 3)] |
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40 |
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41 expected_graph = nx.Graph() |
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42 expected_graph.add_edge(*intervals) |
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43 |
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44 actual_g = interval_graph(intervals) |
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45 |
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46 assert set(actual_g.nodes) == set(expected_graph.nodes) |
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47 assert_edges_equal(expected_graph, actual_g) |
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48 |
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49 def test_interval_graph_1(self): |
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50 intervals = [(1, 2), (2, 3), (3, 4), (1, 4)] |
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51 |
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52 expected_graph = nx.Graph() |
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53 expected_graph.add_nodes_from(intervals) |
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54 e1 = ((1, 4), (1, 2)) |
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55 e2 = ((1, 4), (2, 3)) |
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56 e3 = ((1, 4), (3, 4)) |
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57 e4 = ((3, 4), (2, 3)) |
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58 e5 = ((1, 2), (2, 3)) |
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59 |
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60 expected_graph.add_edges_from([e1, e2, e3, e4, e5]) |
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61 |
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62 actual_g = interval_graph(intervals) |
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63 |
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64 assert set(actual_g.nodes) == set(expected_graph.nodes) |
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65 assert_edges_equal(expected_graph, actual_g) |
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66 |
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67 def test_interval_graph_2(self): |
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68 intervals = [(1, 2), [3, 5], [6, 8], (9, 10)] |
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69 |
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70 expected_graph = nx.Graph() |
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71 expected_graph.add_nodes_from([(1, 2), (3, 5), (6, 8), (9, 10)]) |
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72 |
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73 actual_g = interval_graph(intervals) |
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74 |
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75 assert set(actual_g.nodes) == set(expected_graph.nodes) |
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76 assert_edges_equal(expected_graph, actual_g) |
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77 |
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78 def test_interval_graph_3(self): |
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79 intervals = [(1, 4), [3, 5], [2.5, 4]] |
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80 |
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81 expected_graph = nx.Graph() |
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82 expected_graph.add_nodes_from([(1, 4), (3, 5), (2.5, 4)]) |
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83 e1 = ((1, 4), (3, 5)) |
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84 e2 = ((1, 4), (2.5, 4)) |
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85 e3 = ((3, 5), (2.5, 4)) |
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86 |
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87 expected_graph.add_edges_from([e1, e2, e3]) |
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88 |
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89 actual_g = interval_graph(intervals) |
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90 |
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91 assert set(actual_g.nodes) == set(expected_graph.nodes) |
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92 assert_edges_equal(expected_graph, actual_g) |
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93 |
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94 def test_interval_graph_4(self): |
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95 """ test all possible overlaps """ |
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96 intervals = [ |
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97 (0, 2), |
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98 (-2, -1), |
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99 (-2, 0), |
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100 (-2, 1), |
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101 (-2, 2), |
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102 (-2, 3), |
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103 (0, 1), |
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104 (0, 2), |
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105 (0, 3), |
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106 (1, 2), |
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107 (1, 3), |
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108 (2, 3), |
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109 (3, 4), |
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110 ] |
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111 |
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112 expected_graph = nx.Graph() |
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113 expected_graph.add_nodes_from(intervals) |
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114 expected_nbrs = { |
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115 (-2, 0), |
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116 (-2, 1), |
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117 (-2, 2), |
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118 (-2, 3), |
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119 (0, 1), |
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120 (0, 2), |
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121 (0, 3), |
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122 (1, 2), |
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123 (1, 3), |
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124 (2, 3), |
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125 } |
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126 actual_g = nx.interval_graph(intervals) |
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127 actual_nbrs = nx.neighbors(actual_g, (0, 2)) |
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128 |
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129 assert set(actual_nbrs) == expected_nbrs |
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130 |
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131 def test_interval_graph_5(self): |
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132 """ this test is to see that an interval supports infinite number""" |
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133 intervals = {(-math.inf, 0), (-1, -1), (0.5, 0.5), (1, 1), (1, math.inf)} |
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134 |
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135 expected_graph = nx.Graph() |
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136 expected_graph.add_nodes_from(intervals) |
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137 e1 = ((-math.inf, 0), (-1, -1)) |
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138 e2 = ((1, 1), (1, math.inf)) |
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139 |
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140 expected_graph.add_edges_from([e1, e2]) |
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141 actual_g = interval_graph(intervals) |
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142 |
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143 assert set(actual_g.nodes) == set(expected_graph.nodes) |
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144 assert_edges_equal(expected_graph, actual_g) |