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"""v3 → v4 migrator: additive `training.adapters` block (identity).""" |
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from __future__ import annotations |
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from typing import Any |
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from dlm.doc.migrations.v3 import migrate |
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from dlm.doc.schema import DlmFrontmatter |
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VALID_ULID = "01HZ4X7TGZM3J1A2B3C4D5E6F7" |
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class TestIdentity: |
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def test_empty_passthrough(self) -> None: |
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raw: dict[str, Any] = {} |
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out = migrate(raw) |
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assert out == raw |
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assert out is not raw |
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def test_v3_cpt_block_preserved(self) -> None: |
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raw: dict[str, Any] = { |
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"training": { |
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"cpt": {"schedule": "dapt", "embed_warmup_steps": 100}, |
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}, |
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} |
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out = migrate(raw) |
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assert out == raw |
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def test_v3_preference_block_preserved(self) -> None: |
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raw: dict[str, Any] = { |
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"training": { |
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"preference": { |
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"method": "orpo", |
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"hyperparams": {"alpha": 0.2}, |
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}, |
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}, |
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} |
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out = migrate(raw) |
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assert out == raw |
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class TestValidatesAsV4: |
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def test_migrated_doc_validates_without_adapters_block(self) -> None: |
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raw: dict[str, Any] = { |
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"dlm_id": VALID_ULID, |
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"base_model": "smollm2-135m", |
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"dlm_version": 3, |
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} |
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out = migrate(raw) |
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out["dlm_version"] = 4 |
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fm = DlmFrontmatter.model_validate(out) |
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assert fm.training.adapters is None |