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chore: import upstream snapshot with attribution
2026-07-13 13:02:24 +08:00

83 lines
2.4 KiB
Python

import pytest
from distributed.graph_write_batch import apply_grouped_graph_writes, group_graph_writes
def test_group_graph_writes_groups_by_provenance_key():
items = [
(["n1"], [], "srA", "run1"),
([], ["e1"], "srA", "run1"),
(["n2"], ["e2"], "srB", "run2"),
(["n3"], [], "srA", "run1"),
]
groups = group_graph_writes(items)
assert groups[("srA", "run1")] == (["n1", "n3"], ["e1"])
assert groups[("srB", "run2")] == (["n2"], ["e2"])
# First-seen key order is preserved.
assert list(groups.keys()) == [("srA", "run1"), ("srB", "run2")]
def test_group_graph_writes_keeps_unprovenanced_items_separate():
items = [
(["n1"], [], None, None),
(["n2"], [], "srA", "run1"),
]
groups = group_graph_writes(items)
assert groups[(None, None)] == (["n1"], [])
assert groups[("srA", "run1")] == (["n2"], [])
def test_group_graph_writes_empty():
assert group_graph_writes([]) == {}
@pytest.mark.asyncio
async def test_apply_grouped_graph_writes_writes_all_nodes_before_any_edge():
calls = []
async def add_nodes(nodes, source_ref_key, pipeline_run_id):
calls.append(("nodes", tuple(nodes), source_ref_key, pipeline_run_id))
async def add_edges(edges, source_ref_key, pipeline_run_id):
calls.append(("edges", tuple(edges), source_ref_key, pipeline_run_id))
groups = {
("srA", "run1"): (["n1"], ["e1"]),
("srB", "run2"): (["n2"], ["e2"]),
}
await apply_grouped_graph_writes(groups, add_nodes, add_edges)
# Every group's nodes are written before ANY edge, and each write carries its
# own group's provenance.
assert calls == [
("nodes", ("n1",), "srA", "run1"),
("nodes", ("n2",), "srB", "run2"),
("edges", ("e1",), "srA", "run1"),
("edges", ("e2",), "srB", "run2"),
]
@pytest.mark.asyncio
async def test_apply_grouped_graph_writes_skips_empty_batches():
calls = []
async def add_nodes(nodes, source_ref_key, pipeline_run_id):
calls.append(("nodes", source_ref_key))
async def add_edges(edges, source_ref_key, pipeline_run_id):
calls.append(("edges", source_ref_key))
groups = {
("srA", "run1"): (["n1"], []), # nodes only
("srB", "run2"): ([], ["e2"]), # edges only
}
await apply_grouped_graph_writes(groups, add_nodes, add_edges)
assert calls == [("nodes", "srA"), ("edges", "srB")]