Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/classes/tests/test_multigraph.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 import pytest |
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2 |
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3 import networkx as nx |
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4 from networkx.testing.utils import assert_edges_equal |
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5 |
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6 from .test_graph import BaseAttrGraphTester |
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7 from .test_graph import TestGraph as _TestGraph |
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8 |
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9 |
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10 class BaseMultiGraphTester(BaseAttrGraphTester): |
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11 def test_has_edge(self): |
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12 G = self.K3 |
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13 assert G.has_edge(0, 1) |
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14 assert not G.has_edge(0, -1) |
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15 assert G.has_edge(0, 1, 0) |
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16 assert not G.has_edge(0, 1, 1) |
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17 |
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18 def test_get_edge_data(self): |
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19 G = self.K3 |
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20 assert G.get_edge_data(0, 1) == {0: {}} |
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21 assert G[0][1] == {0: {}} |
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22 assert G[0][1][0] == {} |
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23 assert G.get_edge_data(10, 20) is None |
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24 assert G.get_edge_data(0, 1, 0) == {} |
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25 |
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26 def test_adjacency(self): |
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27 G = self.K3 |
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28 assert dict(G.adjacency()) == { |
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29 0: {1: {0: {}}, 2: {0: {}}}, |
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30 1: {0: {0: {}}, 2: {0: {}}}, |
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31 2: {0: {0: {}}, 1: {0: {}}}, |
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32 } |
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33 |
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34 def deepcopy_edge_attr(self, H, G): |
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35 assert G[1][2][0]["foo"] == H[1][2][0]["foo"] |
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36 G[1][2][0]["foo"].append(1) |
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37 assert G[1][2][0]["foo"] != H[1][2][0]["foo"] |
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38 |
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39 def shallow_copy_edge_attr(self, H, G): |
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40 assert G[1][2][0]["foo"] == H[1][2][0]["foo"] |
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41 G[1][2][0]["foo"].append(1) |
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42 assert G[1][2][0]["foo"] == H[1][2][0]["foo"] |
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43 |
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44 def graphs_equal(self, H, G): |
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45 assert G._adj == H._adj |
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46 assert G._node == H._node |
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47 assert G.graph == H.graph |
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48 assert G.name == H.name |
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49 if not G.is_directed() and not H.is_directed(): |
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50 assert H._adj[1][2][0] is H._adj[2][1][0] |
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51 assert G._adj[1][2][0] is G._adj[2][1][0] |
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52 else: # at least one is directed |
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53 if not G.is_directed(): |
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54 G._pred = G._adj |
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55 G._succ = G._adj |
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56 if not H.is_directed(): |
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57 H._pred = H._adj |
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58 H._succ = H._adj |
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59 assert G._pred == H._pred |
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60 assert G._succ == H._succ |
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61 assert H._succ[1][2][0] is H._pred[2][1][0] |
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62 assert G._succ[1][2][0] is G._pred[2][1][0] |
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63 |
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64 def same_attrdict(self, H, G): |
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65 # same attrdict in the edgedata |
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66 old_foo = H[1][2][0]["foo"] |
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67 H.adj[1][2][0]["foo"] = "baz" |
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68 assert G._adj == H._adj |
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69 H.adj[1][2][0]["foo"] = old_foo |
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70 assert G._adj == H._adj |
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71 |
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72 old_foo = H.nodes[0]["foo"] |
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73 H.nodes[0]["foo"] = "baz" |
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74 assert G._node == H._node |
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75 H.nodes[0]["foo"] = old_foo |
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76 assert G._node == H._node |
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77 |
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78 def different_attrdict(self, H, G): |
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79 # used by graph_equal_but_different |
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80 old_foo = H[1][2][0]["foo"] |
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81 H.adj[1][2][0]["foo"] = "baz" |
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82 assert G._adj != H._adj |
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83 H.adj[1][2][0]["foo"] = old_foo |
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84 assert G._adj == H._adj |
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85 |
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86 old_foo = H.nodes[0]["foo"] |
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87 H.nodes[0]["foo"] = "baz" |
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88 assert G._node != H._node |
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89 H.nodes[0]["foo"] = old_foo |
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90 assert G._node == H._node |
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91 |
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92 def test_to_undirected(self): |
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93 G = self.K3 |
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94 self.add_attributes(G) |
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95 H = nx.MultiGraph(G) |
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96 self.is_shallow_copy(H, G) |
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97 H = G.to_undirected() |
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98 self.is_deepcopy(H, G) |
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99 |
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100 def test_to_directed(self): |
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101 G = self.K3 |
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102 self.add_attributes(G) |
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103 H = nx.MultiDiGraph(G) |
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104 self.is_shallow_copy(H, G) |
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105 H = G.to_directed() |
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106 self.is_deepcopy(H, G) |
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107 |
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108 def test_number_of_edges_selfloops(self): |
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109 G = self.K3 |
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110 G.add_edge(0, 0) |
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111 G.add_edge(0, 0) |
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112 G.add_edge(0, 0, key="parallel edge") |
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113 G.remove_edge(0, 0, key="parallel edge") |
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114 assert G.number_of_edges(0, 0) == 2 |
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115 G.remove_edge(0, 0) |
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116 assert G.number_of_edges(0, 0) == 1 |
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117 |
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118 def test_edge_lookup(self): |
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119 G = self.Graph() |
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120 G.add_edge(1, 2, foo="bar") |
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121 G.add_edge(1, 2, "key", foo="biz") |
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122 assert_edges_equal(G.edges[1, 2, 0], {"foo": "bar"}) |
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123 assert_edges_equal(G.edges[1, 2, "key"], {"foo": "biz"}) |
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124 |
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125 def test_edge_attr4(self): |
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126 G = self.Graph() |
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127 G.add_edge(1, 2, key=0, data=7, spam="bar", bar="foo") |
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128 assert_edges_equal( |
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129 G.edges(data=True), [(1, 2, {"data": 7, "spam": "bar", "bar": "foo"})] |
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130 ) |
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131 G[1][2][0]["data"] = 10 # OK to set data like this |
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132 assert_edges_equal( |
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133 G.edges(data=True), [(1, 2, {"data": 10, "spam": "bar", "bar": "foo"})] |
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134 ) |
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135 |
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136 G.adj[1][2][0]["data"] = 20 |
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137 assert_edges_equal( |
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138 G.edges(data=True), [(1, 2, {"data": 20, "spam": "bar", "bar": "foo"})] |
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139 ) |
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140 G.edges[1, 2, 0]["data"] = 21 # another spelling, "edge" |
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141 assert_edges_equal( |
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142 G.edges(data=True), [(1, 2, {"data": 21, "spam": "bar", "bar": "foo"})] |
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143 ) |
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144 G.adj[1][2][0]["listdata"] = [20, 200] |
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145 G.adj[1][2][0]["weight"] = 20 |
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146 assert_edges_equal( |
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147 G.edges(data=True), |
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148 [ |
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149 ( |
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150 1, |
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151 2, |
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152 { |
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153 "data": 21, |
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154 "spam": "bar", |
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155 "bar": "foo", |
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156 "listdata": [20, 200], |
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157 "weight": 20, |
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158 }, |
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159 ) |
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160 ], |
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161 ) |
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162 |
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163 |
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164 class TestMultiGraph(BaseMultiGraphTester, _TestGraph): |
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165 def setup_method(self): |
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166 self.Graph = nx.MultiGraph |
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167 # build K3 |
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168 ed1, ed2, ed3 = ({0: {}}, {0: {}}, {0: {}}) |
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169 self.k3adj = {0: {1: ed1, 2: ed2}, 1: {0: ed1, 2: ed3}, 2: {0: ed2, 1: ed3}} |
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170 self.k3edges = [(0, 1), (0, 2), (1, 2)] |
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171 self.k3nodes = [0, 1, 2] |
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172 self.K3 = self.Graph() |
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173 self.K3._adj = self.k3adj |
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174 self.K3._node = {} |
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175 self.K3._node[0] = {} |
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176 self.K3._node[1] = {} |
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177 self.K3._node[2] = {} |
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178 |
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179 def test_data_input(self): |
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180 G = self.Graph({1: [2], 2: [1]}, name="test") |
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181 assert G.name == "test" |
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182 expected = [(1, {2: {0: {}}}), (2, {1: {0: {}}})] |
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183 assert sorted(G.adj.items()) == expected |
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184 |
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185 def test_getitem(self): |
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186 G = self.K3 |
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187 assert G[0] == {1: {0: {}}, 2: {0: {}}} |
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188 with pytest.raises(KeyError): |
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189 G.__getitem__("j") |
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190 with pytest.raises(TypeError): |
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191 G.__getitem__(["A"]) |
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192 |
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193 def test_remove_node(self): |
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194 G = self.K3 |
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195 G.remove_node(0) |
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196 assert G.adj == {1: {2: {0: {}}}, 2: {1: {0: {}}}} |
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197 with pytest.raises(nx.NetworkXError): |
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198 G.remove_node(-1) |
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199 |
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200 def test_add_edge(self): |
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201 G = self.Graph() |
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202 G.add_edge(0, 1) |
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203 assert G.adj == {0: {1: {0: {}}}, 1: {0: {0: {}}}} |
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204 G = self.Graph() |
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205 G.add_edge(*(0, 1)) |
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206 assert G.adj == {0: {1: {0: {}}}, 1: {0: {0: {}}}} |
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207 |
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208 def test_add_edge_conflicting_key(self): |
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209 G = self.Graph() |
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210 G.add_edge(0, 1, key=1) |
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211 G.add_edge(0, 1) |
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212 assert G.number_of_edges() == 2 |
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213 G = self.Graph() |
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214 G.add_edges_from([(0, 1, 1, {})]) |
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215 G.add_edges_from([(0, 1)]) |
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216 assert G.number_of_edges() == 2 |
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217 |
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218 def test_add_edges_from(self): |
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219 G = self.Graph() |
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220 G.add_edges_from([(0, 1), (0, 1, {"weight": 3})]) |
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221 assert G.adj == { |
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222 0: {1: {0: {}, 1: {"weight": 3}}}, |
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223 1: {0: {0: {}, 1: {"weight": 3}}}, |
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224 } |
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225 G.add_edges_from([(0, 1), (0, 1, {"weight": 3})], weight=2) |
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226 assert G.adj == { |
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227 0: {1: {0: {}, 1: {"weight": 3}, 2: {"weight": 2}, 3: {"weight": 3}}}, |
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228 1: {0: {0: {}, 1: {"weight": 3}, 2: {"weight": 2}, 3: {"weight": 3}}}, |
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229 } |
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230 G = self.Graph() |
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231 edges = [ |
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232 (0, 1, {"weight": 3}), |
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233 (0, 1, (("weight", 2),)), |
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234 (0, 1, 5), |
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235 (0, 1, "s"), |
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236 ] |
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237 G.add_edges_from(edges) |
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238 keydict = {0: {"weight": 3}, 1: {"weight": 2}, 5: {}, "s": {}} |
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239 assert G._adj == {0: {1: keydict}, 1: {0: keydict}} |
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240 |
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241 # too few in tuple |
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242 with pytest.raises(nx.NetworkXError): |
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243 G.add_edges_from([(0,)]) |
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244 # too many in tuple |
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245 with pytest.raises(nx.NetworkXError): |
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246 G.add_edges_from([(0, 1, 2, 3, 4)]) |
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247 # not a tuple |
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248 with pytest.raises(TypeError): |
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249 G.add_edges_from([0]) |
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250 |
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251 def test_remove_edge(self): |
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252 G = self.K3 |
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253 G.remove_edge(0, 1) |
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254 assert G.adj == {0: {2: {0: {}}}, 1: {2: {0: {}}}, 2: {0: {0: {}}, 1: {0: {}}}} |
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255 |
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256 with pytest.raises(nx.NetworkXError): |
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257 G.remove_edge(-1, 0) |
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258 with pytest.raises(nx.NetworkXError): |
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259 G.remove_edge(0, 2, key=1) |
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260 |
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261 def test_remove_edges_from(self): |
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262 G = self.K3.copy() |
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263 G.remove_edges_from([(0, 1)]) |
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264 kd = {0: {}} |
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265 assert G.adj == {0: {2: kd}, 1: {2: kd}, 2: {0: kd, 1: kd}} |
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266 G.remove_edges_from([(0, 0)]) # silent fail |
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267 self.K3.add_edge(0, 1) |
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268 G = self.K3.copy() |
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269 G.remove_edges_from(list(G.edges(data=True, keys=True))) |
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270 assert G.adj == {0: {}, 1: {}, 2: {}} |
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271 G = self.K3.copy() |
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272 G.remove_edges_from(list(G.edges(data=False, keys=True))) |
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273 assert G.adj == {0: {}, 1: {}, 2: {}} |
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274 G = self.K3.copy() |
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275 G.remove_edges_from(list(G.edges(data=False, keys=False))) |
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276 assert G.adj == {0: {}, 1: {}, 2: {}} |
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277 G = self.K3.copy() |
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278 G.remove_edges_from([(0, 1, 0), (0, 2, 0, {}), (1, 2)]) |
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279 assert G.adj == {0: {1: {1: {}}}, 1: {0: {1: {}}}, 2: {}} |
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280 |
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281 def test_remove_multiedge(self): |
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282 G = self.K3 |
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283 G.add_edge(0, 1, key="parallel edge") |
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284 G.remove_edge(0, 1, key="parallel edge") |
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285 assert G.adj == { |
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286 0: {1: {0: {}}, 2: {0: {}}}, |
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287 1: {0: {0: {}}, 2: {0: {}}}, |
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288 2: {0: {0: {}}, 1: {0: {}}}, |
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289 } |
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290 G.remove_edge(0, 1) |
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291 kd = {0: {}} |
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292 assert G.adj == {0: {2: kd}, 1: {2: kd}, 2: {0: kd, 1: kd}} |
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293 with pytest.raises(nx.NetworkXError): |
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294 G.remove_edge(-1, 0) |
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295 |
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296 |
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297 class TestEdgeSubgraph: |
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298 """Unit tests for the :meth:`MultiGraph.edge_subgraph` method.""" |
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299 |
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300 def setup_method(self): |
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301 # Create a doubly-linked path graph on five nodes. |
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302 G = nx.MultiGraph() |
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303 nx.add_path(G, range(5)) |
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304 nx.add_path(G, range(5)) |
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305 # Add some node, edge, and graph attributes. |
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306 for i in range(5): |
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307 G.nodes[i]["name"] = f"node{i}" |
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308 G.adj[0][1][0]["name"] = "edge010" |
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309 G.adj[0][1][1]["name"] = "edge011" |
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310 G.adj[3][4][0]["name"] = "edge340" |
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311 G.adj[3][4][1]["name"] = "edge341" |
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312 G.graph["name"] = "graph" |
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313 # Get the subgraph induced by one of the first edges and one of |
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314 # the last edges. |
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315 self.G = G |
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316 self.H = G.edge_subgraph([(0, 1, 0), (3, 4, 1)]) |
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317 |
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318 def test_correct_nodes(self): |
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319 """Tests that the subgraph has the correct nodes.""" |
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320 assert [0, 1, 3, 4] == sorted(self.H.nodes()) |
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321 |
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322 def test_correct_edges(self): |
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323 """Tests that the subgraph has the correct edges.""" |
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324 assert [(0, 1, 0, "edge010"), (3, 4, 1, "edge341")] == sorted( |
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325 self.H.edges(keys=True, data="name") |
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326 ) |
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327 |
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328 def test_add_node(self): |
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329 """Tests that adding a node to the original graph does not |
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330 affect the nodes of the subgraph. |
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331 |
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332 """ |
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333 self.G.add_node(5) |
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334 assert [0, 1, 3, 4] == sorted(self.H.nodes()) |
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335 |
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336 def test_remove_node(self): |
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337 """Tests that removing a node in the original graph does |
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338 affect the nodes of the subgraph. |
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339 |
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340 """ |
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341 self.G.remove_node(0) |
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342 assert [1, 3, 4] == sorted(self.H.nodes()) |
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343 |
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344 def test_node_attr_dict(self): |
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345 """Tests that the node attribute dictionary of the two graphs is |
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346 the same object. |
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347 |
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348 """ |
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349 for v in self.H: |
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350 assert self.G.nodes[v] == self.H.nodes[v] |
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351 # Making a change to G should make a change in H and vice versa. |
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352 self.G.nodes[0]["name"] = "foo" |
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353 assert self.G.nodes[0] == self.H.nodes[0] |
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354 self.H.nodes[1]["name"] = "bar" |
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355 assert self.G.nodes[1] == self.H.nodes[1] |
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356 |
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357 def test_edge_attr_dict(self): |
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358 """Tests that the edge attribute dictionary of the two graphs is |
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359 the same object. |
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360 |
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361 """ |
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362 for u, v, k in self.H.edges(keys=True): |
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363 assert self.G._adj[u][v][k] == self.H._adj[u][v][k] |
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364 # Making a change to G should make a change in H and vice versa. |
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365 self.G._adj[0][1][0]["name"] = "foo" |
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366 assert self.G._adj[0][1][0]["name"] == self.H._adj[0][1][0]["name"] |
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367 self.H._adj[3][4][1]["name"] = "bar" |
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368 assert self.G._adj[3][4][1]["name"] == self.H._adj[3][4][1]["name"] |
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369 |
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370 def test_graph_attr_dict(self): |
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371 """Tests that the graph attribute dictionary of the two graphs |
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372 is the same object. |
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373 |
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374 """ |
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375 assert self.G.graph is self.H.graph |