fix(spec): correct schema evolution compatibility - #90
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📝 WalkthroughWalkthroughThe GTS specification advances to draft 0.13, separating derivation compatibility from schema evolution compatibility. Section 4, registry guidance, OP#8 terminology, the compatibility endpoint description, identifier matching, and compatibility test coverage are updated. ChangesGTS compatibility model
Estimated code review effort: 4 (Complex) | ~60 minutes Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Actionable comments posted: 3
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@README.md`:
- Line 153: Revise the “Built-in Compatibility Checking” statement to separate
schema compatibility from casting and runtime-processing guarantees. Describe
compatibility as comparing successive type definitions, without claiming that it
makes upcasting, downcasting, or consumer processing safe; align the wording
with the separate operational contracts defined in §4.3.
- Line 954: Qualify the Identity-field note’s const-compatibility statement:
explain that differing const values prevent instances carrying the optional
property from satisfying both schemas, but do not make the schema intersection
empty when the property is absent. Align the wording with the existing
qualification in the compatibility table while preserving the OP#9 casting and
operational-compatibility distinction.
In `@tests/openapi.json`:
- Line 602: Update the OpenAPI 200 response schema for the GET /compatibility
operation, near the “Check Type Schema evolution compatibility” summary, to
define is_backward_compatible, is_forward_compatible, and is_fully_compatible as
boolean response properties. Replace the unconstrained object definition while
preserving the existing response structure.
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README.mdtests/openapi.jsontests/test_op8_compatibility_checking.py
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🧹 Nitpick comments (1)
tests/test_op8_compatibility_checking.py (1)
844-844: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick winAssert all three verdicts for the constraint scenarios.
Every other scenario now pins
backward_compatibility,forward_compatibility, andfull_compatibility; these two only pin the backward verdict, so a wrong forward/full result would pass unnoticed. Relaxation should be forward-incompatible/full-incompatible, tightening forward-compatible/full-incompatible.🧪 Proposed assertions
.assert_equal("body.backward_compatibility", "compatible") + .assert_equal("body.forward_compatibility", "incompatible") + .assert_equal("body.full_compatibility", "incompatible").assert_equal("body.backward_compatibility", "incompatible") + .assert_equal("body.forward_compatibility", "compatible") + .assert_equal("body.full_compatibility", "incompatible")Also applies to: 913-913
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@tests/test_op8_compatibility_checking.py` at line 844, Extend the assertions in both constraint scenarios around the existing body.backward_compatibility checks to also verify forward_compatibility and full_compatibility. For the relaxation scenario, assert forward-incompatible and full-incompatible; for the tightening scenario, assert forward-compatible and full-incompatible, matching the verdict conventions used by the other scenarios.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@tests/test_op8_compatibility_checking.py`:
- Line 844: Extend the assertions in both constraint scenarios around the
existing body.backward_compatibility checks to also verify forward_compatibility
and full_compatibility. For the relaxation scenario, assert forward-incompatible
and full-incompatible; for the tightening scenario, assert forward-compatible
and full-incompatible, matching the verdict conventions used by the other
scenarios.
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⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
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Run ID: b5df83af-6ce8-4f05-b2ca-5153e091f8fb
📒 Files selected for processing (4)
README.mdtests/openapi.jsontests/test_op4_id_match_pattern.pytests/test_op8_compatibility_checking.py
🚧 Files skipped from review as they are similar to previous changes (2)
- tests/test_op4_id_match_pattern.py
- README.md
- Separate type derivation from evolution and define both through accepted-instance-set inclusion. - Correct open, closed, and partially open content-model rules while separating schema compatibility from operational guarantees. - Expose tri-state OP#8 verdicts and align the OpenAPI contract with conformance assertions. - Fix wildcard conformance expectations for chained suffixes and v0 minor-version patterns. Signed-off-by: Aviator 5 <ai.agent.tor@gmail.com>
2 participants
BREAKING CHANGE: Compatibility verdicts change for open models, enums, and const identifier fields.
Summary by CodeRabbit
*greediness).200response withold,new, and tri-state verdicts:backward_compatibility,forward_compatibility,full_compatibility.const), renames, constraints/enums, numeric changes, referenced types, and expanded OP#4 wildcard pattern cases.