Files
graphify/tests/test_swift_import_resolution.py
Safi 4fbb33301c Collapse Swift module imports to one shared node
Adopts the approach from #1330 (thanks @duncan-daydream) on top of the v0.8.40
Swift import fix: _import_swift returns (id,label) module pairs, the extractor
materializes a type=module anchor node per import, and _disambiguate_colliding_node_ids
exempts type=module nodes so the same module imported from N files collapses to
one shared node (enables reverse traversal "what imports CoreKit"). The --no-cluster
writer now dedupes nodes by id and edges to match the clustered build_from_json path.

Replaces the interim _import_label/synthesize_import_module_nodes mechanism.
Adds tests/test_swift_import_resolution.py (cross-file collapse, build survival)
and dedupe_nodes coverage. Refs #1327, #1330.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-16 03:06:43 +01:00

86 lines
3.1 KiB
Python

from __future__ import annotations
from pathlib import Path
from graphify.build import build_from_json
from graphify.extract import extract
def _write(path: Path, text: str) -> Path:
path.parent.mkdir(parents=True, exist_ok=True)
path.write_text(text, encoding="utf-8")
return path
def _module_nodes(result: dict, label: str) -> list[dict]:
return [
n for n in result["nodes"]
if n.get("type") == "module" and n.get("label") == label
]
def _import_edges(result: dict) -> list[dict]:
return [e for e in result["edges"] if e.get("relation") == "imports"]
def test_swift_import_resolves_to_module_node(tmp_path: Path):
# #1327: `import CoreKit` must anchor to a node, or build_from_json prunes
# the edge as a dangling/external reference.
core = _write(tmp_path / "Sources/CoreKit/CoreKit.swift", "public struct CoreKit {}\n")
feature = _write(
tmp_path / "Sources/FeatureKit/FeatureKit.swift",
"import CoreKit\n\npublic struct FeatureKit {}\n",
)
result = extract([core, feature], cache_root=tmp_path)
node_ids = {n["id"] for n in result["nodes"]}
imports = _import_edges(result)
assert imports
for e in imports:
assert e["target"] in node_ids
assert _module_nodes(result, "CoreKit")
def test_swift_same_module_imported_twice_collapses_to_one_node(tmp_path: Path):
# #1327: the same module imported from multiple files is ONE module, not N
# file-qualified duplicates — collision-disambiguation must exempt modules.
core = _write(tmp_path / "Sources/CoreKit/CoreKit.swift", "public struct CoreKit {}\n")
a = _write(
tmp_path / "Sources/AKit/AKit.swift",
"import CoreKit\n\npublic struct AKit {}\n",
)
b = _write(
tmp_path / "Sources/BKit/BKit.swift",
"import CoreKit\n\npublic struct BKit {}\n",
)
result = extract([core, a, b], cache_root=tmp_path)
# Each importing file contributes a module-node dict, but they must share a
# single id (NOT be split into path-qualified duplicates) so build_from_json
# collapses them into one shared node.
core_modules = _module_nodes(result, "CoreKit")
module_ids = {n["id"] for n in core_modules}
assert len(module_ids) == 1
# Both importers point at that single shared module id.
import_targets = {e["target"] for e in _import_edges(result)}
assert import_targets == module_ids
def test_swift_import_edges_survive_build(tmp_path: Path):
# #1327: edges must remain after graph assembly, deduped to one module node.
core = _write(tmp_path / "Sources/CoreKit/CoreKit.swift", "public struct CoreKit {}\n")
a = _write(tmp_path / "Sources/AKit/AKit.swift", "import CoreKit\n")
b = _write(tmp_path / "Sources/BKit/BKit.swift", "import CoreKit\n")
result = extract([core, a, b], cache_root=tmp_path)
G = build_from_json(result, directed=True)
import_edges = [
(u, v) for u, v, d in G.edges(data=True) if d.get("relation") == "imports"
]
assert len(import_edges) == 2
# Both edges land on the same CoreKit module node.
assert len({v for _, v in import_edges}) == 1