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47 lines
1003 B
Python
47 lines
1003 B
Python
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from collections import defaultdict
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from graphs.minimum_spanning_tree_prims import PrimsAlgorithm as mst
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def test_prim_successful_result():
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num_nodes, num_edges = 9, 14 # noqa: F841
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edges = [
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[0, 1, 4],
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[0, 7, 8],
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[1, 2, 8],
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[7, 8, 7],
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[7, 6, 1],
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[2, 8, 2],
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[8, 6, 6],
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[2, 3, 7],
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[2, 5, 4],
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[6, 5, 2],
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[3, 5, 14],
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[3, 4, 9],
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[5, 4, 10],
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[1, 7, 11],
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]
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adjancency = defaultdict(list)
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for node1, node2, cost in edges:
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adjancency[node1].append([node2, cost])
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adjancency[node2].append([node1, cost])
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result = mst(adjancency)
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expected = [
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[7, 6, 1],
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[2, 8, 2],
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[6, 5, 2],
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[0, 1, 4],
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[2, 5, 4],
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[2, 3, 7],
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[0, 7, 8],
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[3, 4, 9],
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]
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for answer in expected:
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edge = tuple(answer[:2])
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reverse = tuple(edge[::-1])
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assert edge in result or reverse in result
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