Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/algorithms/tests/test_efficiency.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.algorithms.efficiency` module.""" |
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2 |
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3 import networkx as nx |
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4 |
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5 |
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6 class TestEfficiency: |
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7 def setup_method(self): |
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8 # G1 is a disconnected graph |
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9 self.G1 = nx.Graph() |
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10 self.G1.add_nodes_from([1, 2, 3]) |
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11 # G2 is a cycle graph |
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12 self.G2 = nx.cycle_graph(4) |
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13 # G3 is the triangle graph with one additional edge |
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14 self.G3 = nx.lollipop_graph(3, 1) |
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15 |
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16 def test_efficiency_disconnected_nodes(self): |
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17 """ |
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18 When nodes are disconnected, efficiency is 0 |
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19 """ |
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20 assert nx.efficiency(self.G1, 1, 2) == 0 |
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21 |
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22 def test_local_efficiency_disconnected_graph(self): |
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23 """ |
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24 In a disconnected graph the efficiency is 0 |
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25 """ |
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26 assert nx.local_efficiency(self.G1) == 0 |
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27 |
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28 def test_efficiency(self): |
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29 assert nx.efficiency(self.G2, 0, 1) == 1 |
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30 assert nx.efficiency(self.G2, 0, 2) == 1 / 2 |
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31 |
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32 def test_global_efficiency(self): |
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33 assert nx.global_efficiency(self.G2) == 5 / 6 |
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34 |
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35 def test_global_efficiency_complete_graph(self): |
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36 """ |
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37 Tests that the average global efficiency of the complete graph is one. |
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38 """ |
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39 for n in range(2, 10): |
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40 G = nx.complete_graph(n) |
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41 assert nx.global_efficiency(G) == 1 |
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42 |
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43 def test_local_efficiency_complete_graph(self): |
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44 """ |
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45 Test that the local efficiency for a complete graph with at least 3 |
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46 nodes should be one. For a graph with only 2 nodes, the induced |
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47 subgraph has no edges. |
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48 """ |
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49 for n in range(3, 10): |
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50 G = nx.complete_graph(n) |
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51 assert nx.local_efficiency(G) == 1 |
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52 |
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53 def test_using_ego_graph(self): |
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54 """ |
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55 Test that the ego graph is used when computing local efficiency. |
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56 For more information, see GitHub issue #2710. |
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57 """ |
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58 assert nx.local_efficiency(self.G3) == 7 / 12 |