def test_add_nodes_no_overlap(nx):
proc = Process(process_id=10,
process_image="test.exe",
command_line="test.exe /c foobar")
other_proc = Process(process_id=12,
process_image="best.exe",
command_line="best.exe /c 123456")
proc.launched[other_proc].append(timestamp=1)
backend = NetworkX(consolidate_edges=True, nodes=[proc, other_proc])
G = backend.graph()
assert len(G.nodes()) == 2
assert len(G.edges()) == 1
# Add in a new pair of nodes.
proc2 = Process(process_id=4,
process_image="malware.exe",
command_line="malware.exe /c foobar")
f = File(file_name="foo", file_path="bar")
proc2.wrote[f]
G = backend.add_nodes([proc2, f])
# Graph grew
assert len(G.nodes()) == 4
assert len(G.edges()) == 2
def test_add_node_overlaps_existing(nx):
proc = Process(process_id=10,
process_image="test.exe",
command_line="test.exe /c foobar")
other_proc = Process(process_id=12,
process_image="best.exe",
command_line="best.exe /c 123456")
proc.launched[other_proc].append(timestamp=1)
backend = NetworkX(consolidate_edges=True, nodes=[proc, other_proc])
G = backend.graph()
assert len(G.nodes()) == 2
assert len(G.edges()) == 1
# Add a new node that *overlaps* an existing node (note - not the same node object.)
proc2 = Process(process_id=10,
process_image="test.exe",
command_line="test.exe /c foobar")
f = File(file_name="foo", file_path="bar")
proc2.wrote[f]
G = backend.add_nodes([proc2, f])
# Graph grew, but only 3 nodes.
assert len(G.nodes()) == 3
assert len(G.edges()) == 2
# Process should have both write and launched edges.
u = hash(proc2)
v = hash(other_proc)
v2 = hash(f)
assert networkx.has_path(G, u, v)
assert networkx.has_path(G, u, v2)
assert "Launched" in G[u][v]
assert "Wrote" in G[u][v2]
def test_empty_graph(nx):
backend = NetworkX(nodes=[], consolidate_edges=True)
backend.graph()
assert backend.is_empty()