Skip to content

Add language-agnostic conformance suite for credit lease semantics #147

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
bpapillon wants to merge 1 commit into
base: main
Choose a base branch
from
Draft

Add language-agnostic conformance suite for credit lease semantics #147

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
440 changes: 440 additions & 0 deletions conformance/SPEC.md
View file
Open in desktop

Large diffs are not rendered by default.

527 changes: 527 additions & 0 deletions conformance/vectors/check-flow.json
View file
Open in desktop

Large diffs are not rendered by default.

271 changes: 271 additions & 0 deletions conformance/vectors/crash-windows.json
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,271 @@
{
"category": "crash_window",
"vectors": [
{
"name": "debit_without_record_leaks_bounded",
"description": "Crash window 1 (debit-then-add): the atomic debit landed but the reservation record never did. The leak is exactly the reserved amount; the sweeper can never refund a hold that was never recorded.",
"given": {
"leases": [
{
"lease_id": "lse_1",
"company_id": "co_1",
"credit_type_id": "ct_1",
"granted_amount": 1000,
"expires_at_ms": 60000
}
]
},
"operations": [
{
"op": "try_reserve",
"company_id": "co_1",
"credit_type_id": "ct_1",
"credits": 100,
"expect": { "balance": 900 }
},
{ "op": "reserved_credits", "company_id": "co_1", "credit_type_id": "ct_1", "expect": { "total": 0 } },
{ "op": "advance_clock", "ms": 55000 },
{ "op": "sweep_expired", "expect": { "swept": 0 } },
{
"op": "get_lease",
"company_id": "co_1",
"credit_type_id": "ct_1",
"expect": { "exists": true, "local_remaining_credits": 900 }
}
]
},
{
"name": "debit_leak_reclaimed_at_lease_expiry",
"description": "Crash window 1 recovery: the leaked balance is never served after lease expiry, and the successor lease installs at the full grant — the leak does not outlive the lease.",
"given": {
"leases": [
{
"lease_id": "lse_1",
"company_id": "co_1",
"credit_type_id": "ct_1",
"granted_amount": 1000,
"expires_at_ms": 60000
}
]
},
"operations": [
{
"op": "try_reserve",
"company_id": "co_1",
"credit_type_id": "ct_1",
"credits": 100,
"expect": { "balance": 900 }
},
{ "op": "advance_clock", "ms": 60001 },
{
"op": "try_reserve",
"company_id": "co_1",
"credit_type_id": "ct_1",
"credits": 1,
"expect": { "balance": null }
},
{
"op": "replace_lease",
"lease_id": "lse_2",
"company_id": "co_1",
"credit_type_id": "ct_1",
"granted_amount": 1000,
"expires_at_ms": 180000,
"expect": { "written": true }
},
{
"op": "get_lease",
"company_id": "co_1",
"credit_type_id": "ct_1",
"expect": { "exists": true, "local_remaining_credits": 1000 }
}
]
},
{
"name": "retried_check_after_debit_leak_settles_once",
"description": "A retry after a window-1 crash is a fresh check with a fresh reservation: its unspent slice refunds exactly once; the leaked slice never refunds — not on a repeat consume, not on a sweep.",
"given": {
"leases": [
{
"lease_id": "lse_1",
"company_id": "co_1",
"credit_type_id": "ct_1",
"granted_amount": 1000,
"expires_at_ms": 3600000
}
]
},
"operations": [
{
"op": "try_reserve",
"company_id": "co_1",
"credit_type_id": "ct_1",
"credits": 100,
"expect": { "balance": 900 }
},
{
"op": "try_reserve",
"company_id": "co_1",
"credit_type_id": "ct_1",
"credits": 100,
"expect": { "balance": 800 }
},
{
"op": "add_reservation",
"id": "res_retry",
"lease_id": "lse_1",
"company_id": "co_1",
"credit_type_id": "ct_1",
"event_subtype": "inference_tokens",
"quantity_reserved": 10,
"credits_reserved": 100,
"consumption_rate": 10,
"expires_at_ms": 60000
},
{ "op": "consume_reservation", "id": "res_retry", "credits": 40, "expect": { "consumed": 40 } },
{
"op": "get_lease",
"company_id": "co_1",
"credit_type_id": "ct_1",
"expect": { "exists": true, "local_remaining_credits": 860 }
},
{ "op": "consume_reservation", "id": "res_retry", "credits": 40, "expect": { "consumed": null } },
{ "op": "advance_clock", "ms": 70000 },
{ "op": "sweep_expired", "expect": { "swept": 0 } },
{
"op": "get_lease",
"company_id": "co_1",
"credit_type_id": "ct_1",
"expect": { "exists": true, "local_remaining_credits": 860 }
}
]
},
{
"name": "crash_before_refund_claim_is_durable",
"description": "Crash window 2 (consume-then-refund): the claim survives the crash, so the reservation is gone everywhere and nothing can double-spend; the unspent slice's refund is lost, bounded by credits_reserved. A retried settle neither re-claims nor double-refunds, and the sweeper cannot refund a claimed reservation.",
"given": {
"leases": [
{
"lease_id": "lse_1",
"company_id": "co_1",
"credit_type_id": "ct_1",
"granted_amount": 1000,
"expires_at_ms": 3600000
}
]
},
"operations": [
{
"op": "try_reserve",
"company_id": "co_1",
"credit_type_id": "ct_1",
"credits": 100,
"expect": { "balance": 900 }
},
{
"op": "add_reservation",
"id": "res_1",
"lease_id": "lse_1",
"company_id": "co_1",
"credit_type_id": "ct_1",
"event_subtype": "inference_tokens",
"quantity_reserved": 10,
"credits_reserved": 100,
"consumption_rate": 10,
"expires_at_ms": 60000
},
{
"op": "consume_reservation",
"id": "res_1",
"credits": 30,
"crash_before_refund": true,
"expect": { "throws": true }
},
{ "op": "get_reservation", "id": "res_1", "expect": { "exists": false } },
{ "op": "reserved_credits", "company_id": "co_1", "credit_type_id": "ct_1", "expect": { "total": 0 } },
{
"op": "get_lease",
"company_id": "co_1",
"credit_type_id": "ct_1",
"expect": { "exists": true, "local_remaining_credits": 900 }
},
{ "op": "consume_reservation", "id": "res_1", "credits": 30, "expect": { "consumed": null } },
{ "op": "advance_clock", "ms": 70000 },
{ "op": "sweep_expired", "expect": { "swept": 0 } },
{
"op": "get_lease",
"company_id": "co_1",
"credit_type_id": "ct_1",
"expect": { "exists": true, "local_remaining_credits": 900 }
}
]
},
{
"name": "crash_before_refund_reclaimed_at_lease_expiry",
"description": "Crash window 2 recovery: after the lease expires and a successor takes the slot at full grant, a very late retried settle of the crashed reservation must not leak the lost refund into the successor.",
"given": {
"leases": [
{
"lease_id": "lse_1",
"company_id": "co_1",
"credit_type_id": "ct_1",
"granted_amount": 1000,
"expires_at_ms": 60000
}
]
},
"operations": [
{
"op": "try_reserve",
"company_id": "co_1",
"credit_type_id": "ct_1",
"credits": 100,
"expect": { "balance": 900 }
},
{
"op": "add_reservation",
"id": "res_1",
"lease_id": "lse_1",
"company_id": "co_1",
"credit_type_id": "ct_1",
"event_subtype": "inference_tokens",
"quantity_reserved": 10,
"credits_reserved": 100,
"consumption_rate": 10,
"expires_at_ms": 60000
},
{
"op": "consume_reservation",
"id": "res_1",
"credits": 30,
"crash_before_refund": true,
"expect": { "throws": true }
},
{ "op": "advance_clock", "ms": 60001 },
{
"op": "try_reserve",
"company_id": "co_1",
"credit_type_id": "ct_1",
"credits": 1,
"expect": { "balance": null }
},
{
"op": "replace_lease",
"lease_id": "lse_2",
"company_id": "co_1",
"credit_type_id": "ct_1",
"granted_amount": 1000,
"expires_at_ms": 180000,
"expect": { "written": true }
},
{ "op": "consume_reservation", "id": "res_1", "credits": 0, "expect": { "consumed": null } },
{
"op": "get_lease",
"company_id": "co_1",
"credit_type_id": "ct_1",
"expect": { "exists": true, "lease_id": "lse_2", "local_remaining_credits": 1000 }
}
]
}
]
}
Loading