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soil/tests/test_network.py
J. Fernando Sánchez d9947c2c52 WIP: all tests pass
Documentation needs some improvement

The API has been simplified to only allow for ONE topology per
NetworkEnvironment.
This covers the main use case, and simplifies the code.
2022-10-16 17:56:23 +02:00

111 lines
3.9 KiB
Python

from unittest import TestCase
import io
import os
import networkx as nx
from os.path import join
from soil import config, network, environment, agents, simulation
from test_main import CustomAgent
ROOT = os.path.abspath(os.path.dirname(__file__))
EXAMPLES = join(ROOT, "..", "examples")
class TestNetwork(TestCase):
def test_load_graph(self):
"""
Load a graph from file if the extension is known.
Raise an exception otherwise.
"""
config = {"network_params": {"path": join(ROOT, "test.gexf")}}
G = network.from_config(config["network_params"])
assert G
assert len(G) == 2
with self.assertRaises(AttributeError):
config = {"network_params": {"path": join(ROOT, "unknown.extension")}}
G = network.from_config(config["network_params"])
print(G)
def test_generate_barabasi(self):
"""
If no path is given, a generator and network parameters
should be used to generate a network
"""
cfg = {"params": {"generator": "barabasi_albert_graph"}}
with self.assertRaises(Exception):
G = network.from_config(cfg)
cfg["params"]["n"] = 100
cfg["params"]["m"] = 10
G = network.from_config(cfg)
assert len(G) == 100
def test_save_geometric(self):
"""
There is a bug in networkx that prevents it from creating a GEXF file
from geometric models. We should work around it.
"""
G = nx.random_geometric_graph(20, 0.1)
env = environment.NetworkEnvironment(topology=G)
f = io.BytesIO()
assert env.G
network.dump_gexf(env.G, f)
def test_networkenvironment_creation(self):
"""Networkenvironment should accept netconfig as parameters"""
model_params = {
"topology": {"path": join(ROOT, "test.gexf")},
"agents": {
"topology": True,
"distribution": [
{
"agent_class": CustomAgent,
}
],
},
}
env = environment.Environment(**model_params)
assert env.G
env.step()
assert len(env.G) == 2
assert len(env.agents) == 2
assert env.agents[1].count_agents(state_id="normal") == 2
assert env.agents[1].count_agents(state_id="normal", limit_neighbors=True) == 1
assert env.agents[0].neighbors == 1
def test_custom_agent_neighbors(self):
"""Allow for search of neighbors with a certain state_id"""
config = {
"model_params": {
"topology": {"path": join(ROOT, "test.gexf")},
"agents": {
"topology": True,
"distribution": [{"weight": 1, "agent_class": CustomAgent}],
},
},
"max_time": 10,
}
s = simulation.from_config(config)
env = s.run_simulation(dry_run=True)[0]
assert env.agents[1].count_agents(state_id="normal") == 2
assert env.agents[1].count_agents(state_id="normal", limit_neighbors=True) == 1
assert env.agents[0].neighbors == 1
def test_subgraph(self):
"""An agent should be able to subgraph the global topology"""
G = nx.Graph()
G.add_node(3)
G.add_edge(1, 2)
distro = agents.calculate_distribution(agent_class=agents.NetworkAgent)
aconfig = config.AgentConfig(distribution=distro, topology=True)
env = environment.Environment(name="Test", topology=G, agents=aconfig)
lst = list(env.network_agents)
a2 = env.find_one(node_id=2)
a3 = env.find_one(node_id=3)
assert len(a2.subgraph(limit_neighbors=True)) == 2
assert len(a3.subgraph(limit_neighbors=True)) == 1
assert len(a3.subgraph(limit_neighbors=True, center=False)) == 0
assert len(a3.subgraph(agent_class=agents.NetworkAgent)) == 3