Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/networkx/generators/tests/test_sudoku.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 """Unit tests for the :mod:`networkx.generators.sudoku_graph` module.""" |
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2 |
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3 import pytest |
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4 import networkx as nx |
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7 def test_sudoku_negative(): |
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8 """Raise an error when generating a Sudoku graph of order -1.""" |
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9 pytest.raises(nx.NetworkXError, nx.sudoku_graph, n=-1) |
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10 |
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12 @pytest.mark.parametrize("n", [0, 1, 2, 3, 4]) |
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13 def test_sudoku_generator(n): |
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14 """Generate Sudoku graphs of various sizes and verify their properties.""" |
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15 G = nx.sudoku_graph(n) |
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16 expected_nodes = n ** 4 |
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17 expected_degree = (n - 1) * (3 * n + 1) |
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18 expected_edges = expected_nodes * expected_degree // 2 |
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19 assert not G.is_directed() |
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20 assert not G.is_multigraph() |
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21 assert G.number_of_nodes() == expected_nodes |
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22 assert G.number_of_edges() == expected_edges |
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23 assert all(d == expected_degree for _, d in G.degree) |
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24 |
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25 if n == 2: |
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26 assert sorted(G.neighbors(6)) == [2, 3, 4, 5, 7, 10, 14] |
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27 elif n == 3: |
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28 assert sorted(G.neighbors(42)) == [ |
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29 6, |
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30 15, |
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31 24, |
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32 33, |
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43 51, |
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44 52, |
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45 53, |
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46 60, |
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47 69, |
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48 78, |
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49 ] |
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50 elif n == 4: |
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51 assert sorted(G.neighbors(0)) == [ |
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52 1, |
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