def test_path_query_path4_retrieves_expected_subset():
set_default_paper_matrix()
nodes = matrix_searcher.path_query(4)
assert 3 == len(nodes)
assert paper_nodes[3] in nodes
assert paper_nodes[6] in nodes
assert paper_nodes[7] in nodes
def test_path_query_retrieves_column(monkeypatch):
counters = mock_method_with_counter(monkeypatch, db, 'get_row')
matrix_searcher.path_query(0)
assert 1 == counters['invocations']