Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/classes/tests/historical_tests.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 """Original NetworkX graph tests""" |
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2 import pytest |
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3 import networkx as nx |
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4 from networkx import convert_node_labels_to_integers as cnlti |
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5 from networkx.testing import assert_edges_equal, assert_nodes_equal |
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6 |
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7 |
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8 class HistoricalTests: |
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9 @classmethod |
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10 def setup_class(cls): |
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11 cls.null = nx.null_graph() |
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12 cls.P1 = cnlti(nx.path_graph(1), first_label=1) |
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13 cls.P3 = cnlti(nx.path_graph(3), first_label=1) |
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14 cls.P10 = cnlti(nx.path_graph(10), first_label=1) |
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15 cls.K1 = cnlti(nx.complete_graph(1), first_label=1) |
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16 cls.K3 = cnlti(nx.complete_graph(3), first_label=1) |
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17 cls.K4 = cnlti(nx.complete_graph(4), first_label=1) |
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18 cls.K5 = cnlti(nx.complete_graph(5), first_label=1) |
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19 cls.K10 = cnlti(nx.complete_graph(10), first_label=1) |
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20 cls.G = nx.Graph |
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21 |
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22 def test_name(self): |
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23 G = self.G(name="test") |
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24 assert str(G) == "test" |
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25 assert G.name == "test" |
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26 H = self.G() |
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27 assert H.name == "" |
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28 |
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29 # Nodes |
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30 |
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31 def test_add_remove_node(self): |
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32 G = self.G() |
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33 G.add_node("A") |
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34 assert G.has_node("A") |
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35 G.remove_node("A") |
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36 assert not G.has_node("A") |
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37 |
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38 def test_nonhashable_node(self): |
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39 # Test if a non-hashable object is in the Graph. A python dict will |
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40 # raise a TypeError, but for a Graph class a simple False should be |
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41 # returned (see Graph __contains__). If it cannot be a node then it is |
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42 # not a node. |
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43 G = self.G() |
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44 assert not G.has_node(["A"]) |
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45 assert not G.has_node({"A": 1}) |
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46 |
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47 def test_add_nodes_from(self): |
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48 G = self.G() |
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49 G.add_nodes_from(list("ABCDEFGHIJKL")) |
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50 assert G.has_node("L") |
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51 G.remove_nodes_from(["H", "I", "J", "K", "L"]) |
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52 G.add_nodes_from([1, 2, 3, 4]) |
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53 assert sorted(G.nodes(), key=str) == [ |
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54 1, |
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55 2, |
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56 3, |
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57 4, |
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58 "A", |
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59 "B", |
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60 "C", |
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61 "D", |
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62 "E", |
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63 "F", |
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64 "G", |
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65 ] |
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66 # test __iter__ |
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67 assert sorted(G, key=str) == [1, 2, 3, 4, "A", "B", "C", "D", "E", "F", "G"] |
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68 |
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69 def test_contains(self): |
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70 G = self.G() |
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71 G.add_node("A") |
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72 assert "A" in G |
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73 assert not [] in G # never raise a Key or TypeError in this test |
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74 assert not {1: 1} in G |
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75 |
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76 def test_add_remove(self): |
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77 # Test add_node and remove_node acting for various nbunch |
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78 G = self.G() |
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79 G.add_node("m") |
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80 assert G.has_node("m") |
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81 G.add_node("m") # no complaints |
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82 pytest.raises(nx.NetworkXError, G.remove_node, "j") |
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83 G.remove_node("m") |
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84 assert list(G) == [] |
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85 |
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86 def test_nbunch_is_list(self): |
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87 G = self.G() |
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88 G.add_nodes_from(list("ABCD")) |
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89 G.add_nodes_from(self.P3) # add nbunch of nodes (nbunch=Graph) |
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90 assert sorted(G.nodes(), key=str) == [1, 2, 3, "A", "B", "C", "D"] |
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91 G.remove_nodes_from(self.P3) # remove nbunch of nodes (nbunch=Graph) |
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92 assert sorted(G.nodes(), key=str) == ["A", "B", "C", "D"] |
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93 |
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94 def test_nbunch_is_set(self): |
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95 G = self.G() |
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96 nbunch = set("ABCDEFGHIJKL") |
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97 G.add_nodes_from(nbunch) |
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98 assert G.has_node("L") |
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99 |
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100 def test_nbunch_dict(self): |
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101 # nbunch is a dict with nodes as keys |
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102 G = self.G() |
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103 nbunch = set("ABCDEFGHIJKL") |
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104 G.add_nodes_from(nbunch) |
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105 nbunch = {"I": "foo", "J": 2, "K": True, "L": "spam"} |
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106 G.remove_nodes_from(nbunch) |
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107 assert sorted(G.nodes(), key=str), ["A", "B", "C", "D", "E", "F", "G", "H"] |
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108 |
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109 def test_nbunch_iterator(self): |
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110 G = self.G() |
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111 G.add_nodes_from(["A", "B", "C", "D", "E", "F", "G", "H"]) |
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112 n_iter = self.P3.nodes() |
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113 G.add_nodes_from(n_iter) |
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114 assert sorted(G.nodes(), key=str) == [ |
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115 1, |
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116 2, |
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117 3, |
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118 "A", |
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119 "B", |
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120 "C", |
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121 "D", |
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122 "E", |
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123 "F", |
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124 "G", |
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125 "H", |
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126 ] |
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127 n_iter = self.P3.nodes() # rebuild same iterator |
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128 G.remove_nodes_from(n_iter) # remove nbunch of nodes (nbunch=iterator) |
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129 assert sorted(G.nodes(), key=str) == ["A", "B", "C", "D", "E", "F", "G", "H"] |
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130 |
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131 def test_nbunch_graph(self): |
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132 G = self.G() |
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133 G.add_nodes_from(["A", "B", "C", "D", "E", "F", "G", "H"]) |
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134 nbunch = self.K3 |
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135 G.add_nodes_from(nbunch) |
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136 assert sorted(G.nodes(), key=str), [ |
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137 1, |
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138 2, |
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139 3, |
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140 "A", |
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141 "B", |
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142 "C", |
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143 "D", |
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144 "E", |
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145 "F", |
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146 "G", |
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147 "H", |
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148 ] |
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149 |
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150 # Edges |
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151 |
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152 def test_add_edge(self): |
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153 G = self.G() |
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154 pytest.raises(TypeError, G.add_edge, "A") |
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155 |
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156 G.add_edge("A", "B") # testing add_edge() |
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157 G.add_edge("A", "B") # should fail silently |
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158 assert G.has_edge("A", "B") |
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159 assert not G.has_edge("A", "C") |
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160 assert G.has_edge(*("A", "B")) |
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161 if G.is_directed(): |
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162 assert not G.has_edge("B", "A") |
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163 else: |
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164 # G is undirected, so B->A is an edge |
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165 assert G.has_edge("B", "A") |
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166 |
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167 G.add_edge("A", "C") # test directedness |
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168 G.add_edge("C", "A") |
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169 G.remove_edge("C", "A") |
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170 if G.is_directed(): |
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171 assert G.has_edge("A", "C") |
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172 else: |
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173 assert not G.has_edge("A", "C") |
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174 assert not G.has_edge("C", "A") |
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175 |
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176 def test_self_loop(self): |
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177 G = self.G() |
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178 G.add_edge("A", "A") # test self loops |
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179 assert G.has_edge("A", "A") |
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180 G.remove_edge("A", "A") |
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181 G.add_edge("X", "X") |
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182 assert G.has_node("X") |
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183 G.remove_node("X") |
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184 G.add_edge("A", "Z") # should add the node silently |
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185 assert G.has_node("Z") |
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186 |
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187 def test_add_edges_from(self): |
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188 G = self.G() |
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189 G.add_edges_from([("B", "C")]) # test add_edges_from() |
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190 assert G.has_edge("B", "C") |
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191 if G.is_directed(): |
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192 assert not G.has_edge("C", "B") |
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193 else: |
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194 assert G.has_edge("C", "B") # undirected |
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195 |
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196 G.add_edges_from([("D", "F"), ("B", "D")]) |
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197 assert G.has_edge("D", "F") |
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198 assert G.has_edge("B", "D") |
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199 |
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200 if G.is_directed(): |
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201 assert not G.has_edge("D", "B") |
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202 else: |
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203 assert G.has_edge("D", "B") # undirected |
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204 |
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205 def test_add_edges_from2(self): |
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206 G = self.G() |
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207 # after failing silently, should add 2nd edge |
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208 G.add_edges_from([tuple("IJ"), list("KK"), tuple("JK")]) |
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209 assert G.has_edge(*("I", "J")) |
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210 assert G.has_edge(*("K", "K")) |
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211 assert G.has_edge(*("J", "K")) |
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212 if G.is_directed(): |
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213 assert not G.has_edge(*("K", "J")) |
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214 else: |
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215 assert G.has_edge(*("K", "J")) |
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216 |
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217 def test_add_edges_from3(self): |
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218 G = self.G() |
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219 G.add_edges_from(zip(list("ACD"), list("CDE"))) |
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220 assert G.has_edge("D", "E") |
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221 assert not G.has_edge("E", "C") |
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222 |
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223 def test_remove_edge(self): |
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224 G = self.G() |
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225 G.add_nodes_from([1, 2, 3, "A", "B", "C", "D", "E", "F", "G", "H"]) |
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226 |
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227 G.add_edges_from(zip(list("MNOP"), list("NOPM"))) |
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228 assert G.has_edge("O", "P") |
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229 assert G.has_edge("P", "M") |
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230 G.remove_node("P") # tests remove_node()'s handling of edges. |
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231 assert not G.has_edge("P", "M") |
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232 pytest.raises(TypeError, G.remove_edge, "M") |
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233 |
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234 G.add_edge("N", "M") |
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235 assert G.has_edge("M", "N") |
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236 G.remove_edge("M", "N") |
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237 assert not G.has_edge("M", "N") |
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238 |
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239 # self loop fails silently |
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240 G.remove_edges_from([list("HI"), list("DF"), tuple("KK"), tuple("JK")]) |
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241 assert not G.has_edge("H", "I") |
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242 assert not G.has_edge("J", "K") |
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243 G.remove_edges_from([list("IJ"), list("KK"), list("JK")]) |
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244 assert not G.has_edge("I", "J") |
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245 G.remove_nodes_from(set("ZEFHIMNO")) |
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246 G.add_edge("J", "K") |
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247 |
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248 def test_edges_nbunch(self): |
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249 # Test G.edges(nbunch) with various forms of nbunch |
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250 G = self.G() |
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251 G.add_edges_from([("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")]) |
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252 # node not in nbunch should be quietly ignored |
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253 pytest.raises(nx.NetworkXError, G.edges, 6) |
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254 assert list(G.edges("Z")) == [] # iterable non-node |
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255 # nbunch can be an empty list |
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256 assert list(G.edges([])) == [] |
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257 if G.is_directed(): |
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258 elist = [("A", "B"), ("A", "C"), ("B", "D")] |
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259 else: |
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260 elist = [("A", "B"), ("A", "C"), ("B", "C"), ("B", "D")] |
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261 # nbunch can be a list |
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262 assert_edges_equal(list(G.edges(["A", "B"])), elist) |
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263 # nbunch can be a set |
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264 assert_edges_equal(G.edges({"A", "B"}), elist) |
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265 # nbunch can be a graph |
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266 G1 = self.G() |
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267 G1.add_nodes_from("AB") |
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268 assert_edges_equal(G.edges(G1), elist) |
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269 # nbunch can be a dict with nodes as keys |
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270 ndict = {"A": "thing1", "B": "thing2"} |
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271 assert_edges_equal(G.edges(ndict), elist) |
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272 # nbunch can be a single node |
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273 assert_edges_equal(list(G.edges("A")), [("A", "B"), ("A", "C")]) |
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274 assert_nodes_equal(sorted(G), ["A", "B", "C", "D"]) |
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275 |
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276 # nbunch can be nothing (whole graph) |
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277 assert_edges_equal( |
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278 list(G.edges()), |
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279 [("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")], |
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280 ) |
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281 |
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282 def test_degree(self): |
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283 G = self.G() |
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284 G.add_edges_from([("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")]) |
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285 assert G.degree("A") == 2 |
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286 |
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287 # degree of single node in iterable container must return dict |
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288 assert list(G.degree(["A"])) == [("A", 2)] |
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289 assert sorted(d for n, d in G.degree(["A", "B"])) == [2, 3] |
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290 assert sorted(d for n, d in G.degree()) == [2, 2, 3, 3] |
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291 |
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292 def test_degree2(self): |
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293 H = self.G() |
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294 H.add_edges_from([(1, 24), (1, 2)]) |
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295 assert sorted(d for n, d in H.degree([1, 24])) == [1, 2] |
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296 |
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297 def test_degree_graph(self): |
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298 P3 = nx.path_graph(3) |
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299 P5 = nx.path_graph(5) |
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300 # silently ignore nodes not in P3 |
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301 assert dict(d for n, d in P3.degree(["A", "B"])) == {} |
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302 # nbunch can be a graph |
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303 assert sorted(d for n, d in P5.degree(P3)) == [1, 2, 2] |
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304 # nbunch can be a graph that's way too big |
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305 assert sorted(d for n, d in P3.degree(P5)) == [1, 1, 2] |
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306 assert list(P5.degree([])) == [] |
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307 assert dict(P5.degree([])) == {} |
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308 |
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309 def test_null(self): |
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310 null = nx.null_graph() |
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311 assert list(null.degree()) == [] |
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312 assert dict(null.degree()) == {} |
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313 |
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314 def test_order_size(self): |
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315 G = self.G() |
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316 G.add_edges_from([("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")]) |
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317 assert G.order() == 4 |
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318 assert G.size() == 5 |
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319 assert G.number_of_edges() == 5 |
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320 assert G.number_of_edges("A", "B") == 1 |
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321 assert G.number_of_edges("A", "D") == 0 |
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322 |
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323 def test_copy(self): |
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324 G = self.G() |
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325 H = G.copy() # copy |
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326 assert H.adj == G.adj |
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327 assert H.name == G.name |
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328 assert H != G |
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329 |
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330 def test_subgraph(self): |
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331 G = self.G() |
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332 G.add_edges_from([("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")]) |
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333 SG = G.subgraph(["A", "B", "D"]) |
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334 assert_nodes_equal(list(SG), ["A", "B", "D"]) |
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335 assert_edges_equal(list(SG.edges()), [("A", "B"), ("B", "D")]) |
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336 |
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337 def test_to_directed(self): |
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338 G = self.G() |
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339 if not G.is_directed(): |
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340 G.add_edges_from( |
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341 [("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")] |
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342 ) |
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343 |
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344 DG = G.to_directed() |
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345 assert DG != G # directed copy or copy |
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346 |
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347 assert DG.is_directed() |
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348 assert DG.name == G.name |
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349 assert DG.adj == G.adj |
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350 assert sorted(DG.out_edges(list("AB"))) == [ |
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351 ("A", "B"), |
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352 ("A", "C"), |
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353 ("B", "A"), |
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354 ("B", "C"), |
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355 ("B", "D"), |
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356 ] |
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357 DG.remove_edge("A", "B") |
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358 assert DG.has_edge("B", "A") # this removes B-A but not A-B |
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359 assert not DG.has_edge("A", "B") |
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360 |
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361 def test_to_undirected(self): |
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362 G = self.G() |
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363 if G.is_directed(): |
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364 G.add_edges_from( |
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365 [("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")] |
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366 ) |
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367 UG = G.to_undirected() # to_undirected |
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368 assert UG != G |
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369 assert not UG.is_directed() |
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370 assert G.is_directed() |
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371 assert UG.name == G.name |
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372 assert UG.adj != G.adj |
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373 assert sorted(UG.edges(list("AB"))) == [ |
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374 ("A", "B"), |
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375 ("A", "C"), |
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376 ("B", "C"), |
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377 ("B", "D"), |
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378 ] |
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379 assert sorted(UG.edges(["A", "B"])) == [ |
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380 ("A", "B"), |
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381 ("A", "C"), |
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382 ("B", "C"), |
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383 ("B", "D"), |
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384 ] |
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385 UG.remove_edge("A", "B") |
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386 assert not UG.has_edge("B", "A") |
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387 assert not UG.has_edge("A", "B") |
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388 |
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389 def test_neighbors(self): |
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390 G = self.G() |
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391 G.add_edges_from([("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")]) |
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392 G.add_nodes_from("GJK") |
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393 assert sorted(G["A"]) == ["B", "C"] |
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394 assert sorted(G.neighbors("A")) == ["B", "C"] |
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395 assert sorted(G.neighbors("A")) == ["B", "C"] |
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396 assert sorted(G.neighbors("G")) == [] |
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397 pytest.raises(nx.NetworkXError, G.neighbors, "j") |
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398 |
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399 def test_iterators(self): |
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400 G = self.G() |
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401 G.add_edges_from([("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")]) |
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402 G.add_nodes_from("GJK") |
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403 assert sorted(G.nodes()) == ["A", "B", "C", "D", "G", "J", "K"] |
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404 assert_edges_equal( |
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405 G.edges(), [("A", "B"), ("A", "C"), ("B", "D"), ("C", "B"), ("C", "D")] |
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406 ) |
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407 |
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408 assert sorted([v for k, v in G.degree()]) == [0, 0, 0, 2, 2, 3, 3] |
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409 assert sorted(G.degree(), key=str) == [ |
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410 ("A", 2), |
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411 ("B", 3), |
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412 ("C", 3), |
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413 ("D", 2), |
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414 ("G", 0), |
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415 ("J", 0), |
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416 ("K", 0), |
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417 ] |
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418 assert sorted(G.neighbors("A")) == ["B", "C"] |
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419 pytest.raises(nx.NetworkXError, G.neighbors, "X") |
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420 G.clear() |
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421 assert nx.number_of_nodes(G) == 0 |
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422 assert nx.number_of_edges(G) == 0 |
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423 |
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424 def test_null_subgraph(self): |
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425 # Subgraph of a null graph is a null graph |
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426 nullgraph = nx.null_graph() |
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427 G = nx.null_graph() |
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428 H = G.subgraph([]) |
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429 assert nx.is_isomorphic(H, nullgraph) |
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430 |
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431 def test_empty_subgraph(self): |
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432 # Subgraph of an empty graph is an empty graph. test 1 |
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433 nullgraph = nx.null_graph() |
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434 E5 = nx.empty_graph(5) |
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435 E10 = nx.empty_graph(10) |
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436 H = E10.subgraph([]) |
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437 assert nx.is_isomorphic(H, nullgraph) |
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438 H = E10.subgraph([1, 2, 3, 4, 5]) |
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439 assert nx.is_isomorphic(H, E5) |
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440 |
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441 def test_complete_subgraph(self): |
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442 # Subgraph of a complete graph is a complete graph |
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443 K1 = nx.complete_graph(1) |
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444 K3 = nx.complete_graph(3) |
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445 K5 = nx.complete_graph(5) |
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446 H = K5.subgraph([1, 2, 3]) |
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447 assert nx.is_isomorphic(H, K3) |
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448 |
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449 def test_subgraph_nbunch(self): |
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450 nullgraph = nx.null_graph() |
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451 K1 = nx.complete_graph(1) |
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452 K3 = nx.complete_graph(3) |
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453 K5 = nx.complete_graph(5) |
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454 # Test G.subgraph(nbunch), where nbunch is a single node |
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455 H = K5.subgraph(1) |
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456 assert nx.is_isomorphic(H, K1) |
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457 # Test G.subgraph(nbunch), where nbunch is a set |
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458 H = K5.subgraph({1}) |
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459 assert nx.is_isomorphic(H, K1) |
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460 # Test G.subgraph(nbunch), where nbunch is an iterator |
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461 H = K5.subgraph(iter(K3)) |
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462 assert nx.is_isomorphic(H, K3) |
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463 # Test G.subgraph(nbunch), where nbunch is another graph |
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464 H = K5.subgraph(K3) |
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465 assert nx.is_isomorphic(H, K3) |
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466 H = K5.subgraph([9]) |
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467 assert nx.is_isomorphic(H, nullgraph) |
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468 |
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469 def test_node_tuple_issue(self): |
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470 H = self.G() |
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471 # Test error handling of tuple as a node |
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472 pytest.raises(nx.NetworkXError, H.remove_node, (1, 2)) |
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473 H.remove_nodes_from([(1, 2)]) # no error |
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474 pytest.raises(nx.NetworkXError, H.neighbors, (1, 2)) |