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"""!
@brief Unit-tests for Hysteresis Oscillatory Network for graph coloring.
@authors Andrei Novikov (pyclustering@yandex.ru)
@date 2014-2020
@copyright BSD-3-Clause
"""
import unittest;
from pyclustering.gcolor.hysteresis import hysteresisgcolor;
from pyclustering.utils.graph import read_graph;
from pyclustering.samples.definitions import GRAPH_SIMPLE_SAMPLES;
class Test(unittest.TestCase):
def templateTestColoring(self, filename, alpha, eps, steps, time):
graph = read_graph(filename);
network = hysteresisgcolor(graph.data, alpha, eps);
output_analyser = network.process(steps, time);
map_coloring = output_analyser.allocate_map_coloring(0.05, 20);
# Check number of colors
assigned_colors = set(map_coloring);
# Check validity of color numbers
for color_number in range(0, len(assigned_colors), 1):
assert color_number in assigned_colors;
# Check validity of colors
for index_node in range(len(graph.data)):
color_neighbors = [ map_coloring[index] for index in range(len(graph.data[index_node])) if graph.data[index_node][index] != 0 and index_node != index];
#print(index_node, map_coloring[index_node], color_neighbors, assigned_colors, map_coloring, "\n\n");
assert map_coloring[index_node] not in color_neighbors;
def testColoringSimple1(self):
self.templateTestColoring(GRAPH_SIMPLE_SAMPLES.GRAPH_SIMPLE1, 1.2, 1.8, 1500, 15);
def testColoringCircle2(self):
self.templateTestColoring(GRAPH_SIMPLE_SAMPLES.GRAPH_ONE_CIRCLE2, 1.1, 1.1, 1500, 15);
def testColoringFivePointedFrameStar(self):
self.templateTestColoring(GRAPH_SIMPLE_SAMPLES.GRAPH_FIVE_POINTED_FRAME_STAR, 1, 1, 2500, 25);
def testColoringOneLine(self):
self.templateTestColoring(GRAPH_SIMPLE_SAMPLES.GRAPH_ONE_LINE, 1.2, 1.8, 1500, 15);
def testColoringOneCrossroad(self):
self.templateTestColoring(GRAPH_SIMPLE_SAMPLES.GRAPH_ONE_CROSSROAD, 1.2, 1.8, 1500, 15);
def testColoringTwoCrossroads(self):
self.templateTestColoring(GRAPH_SIMPLE_SAMPLES.GRAPH_TWO_CROSSROADS, 1.2, 1.8, 1500, 15);
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