133 lines
4.8 KiB
Python
133 lines
4.8 KiB
Python
import pytest
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from tht.corpus.chunk import ChunkPolicy
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from tht.corpus.pipeline import CorpusPipeline, PipelineError
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from tht.corpus.store import CorpusStore
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from tht.ports.evidence import AcquiredDocument, SourceObject
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from tht.ports.vector import VectorCapabilities
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class Source:
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def __init__(self, documents):
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self.documents = documents
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self.acquire_calls = []
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def discover(self):
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return [item[0] for item in self.documents]
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def acquire(self, item):
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self.acquire_calls.append(item.source_id)
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payload = next(payload for source, payload in self.documents if source.source_id == item.source_id)
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if isinstance(payload, Exception):
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raise payload
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return AcquiredDocument(source=item, content=payload.encode())
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class Embedder:
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def __init__(self, dim=3, fail=False):
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self.dim = dim
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self.fail = fail
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self.calls = []
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def embed_documents(self, texts):
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self.calls.extend(texts)
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if self.fail:
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raise RuntimeError("embed failed")
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return [[float(i) for i in range(self.dim)] for _ in texts]
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class Vectors:
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capabilities = VectorCapabilities(search=True, existing_hashes=True, upsert=True)
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def __init__(self, fail=False):
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self.fail = fail
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self.records = []
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def upsert(self, collection, records):
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self.records.extend(records[:1] if self.fail else records)
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if self.fail:
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raise RuntimeError("partial write")
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return len(records)
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def item(name, fingerprint):
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return SourceObject(
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source_id=f"fs:{name}", uri=f"file:///safe/{name}.md", fingerprint=f"sha256:{fingerprint}"
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)
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def pipeline(tmp_path, source, *, embedder=None, vectors=None, model="model-a", policy=None):
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return CorpusPipeline(
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store=CorpusStore(tmp_path / "corpus"), sources=[source],
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embedder=embedder or Embedder(), vector_store=vectors or Vectors(),
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embedding_model=model, embedding_dimensions=3,
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chunk_policy=policy or ChunkPolicy(version="chunk-v1", max_chars=100),
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pipeline_version="evidence-v1",
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)
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def test_unchanged_documents_skip_acquire_normalize_chunk_and_embed(tmp_path):
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one = item("one", "a")
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first_source = Source([(one, "hello")])
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first = pipeline(tmp_path, first_source)
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first.run()
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second_source = Source([(one, "ignored")])
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second_embedder = Embedder()
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result = pipeline(tmp_path, second_source, embedder=second_embedder).run()
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assert result.unchanged == ("fs:one",)
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assert second_source.acquire_calls == []
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assert second_embedder.calls == []
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def test_removed_documents_are_marked_and_absent_from_new_manifest(tmp_path):
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one, two = item("one", "a"), item("two", "b")
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pipeline(tmp_path, Source([(one, "one"), (two, "two")])).run()
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result = pipeline(tmp_path, Source([(one, "one")])).run()
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assert result.removed == ("fs:two",)
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assert {doc.source_id for doc in result.manifest.documents} == {"fs:one"}
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def test_model_or_chunk_policy_change_forces_full_rebuild(tmp_path):
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one = item("one", "a")
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pipeline(tmp_path, Source([(one, "hello")])).run()
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source = Source([(one, "hello")])
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changed = pipeline(tmp_path, source, model="model-b").run()
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assert changed.changed == ("fs:one",)
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assert source.acquire_calls == ["fs:one"]
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def test_partial_vector_failure_never_changes_active_or_exposes_generation(tmp_path):
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one = item("one", "a")
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good = pipeline(tmp_path, Source([(one, "old")]))
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old = good.run().generation
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changed = item("one", "b")
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vectors = Vectors(fail=True)
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broken = pipeline(tmp_path, Source([(changed, "new")]), vectors=vectors)
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with pytest.raises(PipelineError):
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broken.run()
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assert broken.store.active_generation() == old
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assert vectors.records[0].record.metadata["vector_generation"] != old
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def test_dimension_mismatch_fails_before_vector_write_and_publish(tmp_path):
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one = item("one", "a")
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vectors = Vectors()
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candidate = pipeline(tmp_path, Source([(one, "hello")]), embedder=Embedder(dim=2), vectors=vectors)
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with pytest.raises(PipelineError, match="dimension"):
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candidate.run()
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assert vectors.records == []
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assert candidate.store.active_generation() is None
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def test_dry_run_and_failed_acquire_never_change_active(tmp_path):
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one = item("one", "a")
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active = pipeline(tmp_path, Source([(one, "old")])).run().generation
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changed = item("one", "b")
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dry = pipeline(tmp_path, Source([(changed, "new")])).run(dry_run=True)
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assert dry.published is False
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assert dry.generation is None
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assert dry.manifest.documents[0].content == "old"
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with pytest.raises(PipelineError):
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pipeline(tmp_path, Source([(changed, RuntimeError("boom"))])).run()
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assert CorpusStore(tmp_path / "corpus").active_generation() == active
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