fidZddlZddlZddlmZdZddZedddZdZ d Z d Z d Z d Z d ZdZdS)z4Unit tests for the sparsifier computation functions.N)py_random_statect|t|ksJ|D]K\}}|||sJ|r,||||||||ksJLt t j||}t t j||}|D]J}|D]3}||vr-|||vr#|||||||zksJ4KdS)a*Test whether a spanner is valid. This function tests whether the given spanner is a subgraph of the given graph G with the same node set. It also tests for all shortest paths whether they adhere to the given stretch. Parameters ---------- G : NetworkX graph The original graph for which the spanner was constructed. spanner : NetworkX graph The spanner to be tested. stretch : float The proclaimed stretch of the spanner. weight : object The edge attribute to use as distance. weightN)setnodesedgeshas_edgedictnxshortest_path_length)Gspannerstretchruvoriginal_lengthspanner_lengths /var/www/development/aibuddy-work/election-extract/venv/lib/python3.11/site-packages/networkx/algorithms/tests/test_sparsifiers.py _test_spannerr sb, qwwyy>>S11 1 1 1 1 <<1zz!Q  <1:a=(AaDGFO;;;;221VDDDEEO"1'&IIIJJN WWYYOO O OAO##_Q-?(?(?%a(+w9KA9N/NNNNN OOOc|D](\}}||||d<)dS)aBAssigns random weights to the edges of a graph. Parameters ---------- G : NetworkX graph The original graph for which the spanner was constructed. seed : integer, random_state, or None (default) Indicator of random number generation state. See :ref:`Randomness`. rN)r random)rseedrrs r_assign_random_weightsr2sF **1 KKMM!Q**rctjd}tj|dt}|jD]\}}|||sJdS)z&Test a trivial spanner with stretch 1.rrN)r complete_graphr_seedr r )rrrrs rtest_spanner_trivialr#Dsf "AjAE***G&&11%%%%%%&&rctjd}tj|dt}t ||dtj|dt}t ||ddS)z9Test spanner construction on a complete unweighted graph.rr N)r r!rr"rrrs r&test_spanner_unweighted_complete_graphr(Msh "AjAE***G!Wa   jBU+++G!Wb!!!!!rctjd}t|ttj|ddt}t ||ddtj|ddt}t ||dddS) z7Test spanner construction on a complete weighted graph.rr r%rrrrr&N)r r!rr"rrr's r$test_spanner_weighted_complete_graphr+Xs "A15))))jAhU;;;G!Wa1111jBxe<<r?s:: ****** $O$O$O$ON****"&&&""" 3 3 3""" 3 3 3"""r