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GeezerVison is showing github.com — fix(tests): guard v1 UNI output-price xfail + poll Anvil startup by TimeToBuildBob · Pull Request #1 · TimeToBuildBob/uniswap-python

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@TimeToBuildBob

@TimeToBuildBob TimeToBuildBob commented Oct 6, 2026

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Summary

Two CI failures on the master CheckSuite (ID 26139510394):

  • v1 matrix — test_get_price_output with UNI pairs: The UNI v1 exchange's output-price Vyper bytecode raises EvmError: InvalidJump under Anvil's strict revm. Input-price functions on the same exchange pass; DAI exchange is fine. Added pytest.xfail matching the existing pattern already in make_trade / make_trade_output (lines 472-476, 525-529). The skip for token-token pairs (no ETH) is retained.

  • v4 matrix — ConnectionRefusedError in test_v4_examples.py: The anvil fixture used sleep(3) before connecting on port 10997. When the public mainnet RPC fork is slow or the runner is under load, 3 seconds is insufficient. Replaced with a socket-polling readiness loop (up to 30s, checking every 0.5s), which also kills Anvil cleanly on timeout.

Ruff UP035/UP004 auto-fixes co-committed (typed import modernization in the same files).

Scope

  • No changes to production code — test files only.
  • Codecov upload failures (v2/v3 matrix) are infrastructure and not addressed here.

Test plan

  • CI v1 matrix: test_get_price_output with ETH/UNI and UNI/ETH pairs should now be reported as xfailed instead of FAILED
  • CI v4 matrix: test_v4_examples.py should no longer hit ConnectionRefusedError at fixture setup
  • All other matrix jobs: no regression

Co-Authored-By: Bob [email protected]

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TimeToBuildBob added 2 commits October 6, 2026 17:12
@TimeToBuildBob
fix(tests): guard v1 UNI output-price xfail + poll Anvil startup
ff49027 
v1 test_get_price_output: UNI exchange output-price functions
(getEthToTokenOutputPrice / getTokenToEthOutputPrice) raise EvmError:
InvalidJump under Anvil's strict revm. Input-price functions on the same
exchange pass; DAI exchange is fine. Added pytest.xfail matching the
existing pattern in make_trade / make_trade_output (lines 472-476, 525-529).

test_v4_examples anvil fixture: replaced sleep(3) with a socket polling
loop (up to 30s, checking every 0.5s) so Anvil readiness is detected
regardless of public RPC fork latency or runner load.

Ruff auto-fixes co-committed: UP035 (typing.Generator → collections.abc),
UP004 (class X(object) → class X).

Git-Session-Id: 584d
@TimeToBuildBob
fix(ci): don't fail CI on missing Codecov token
4c8ad67 
The CODECOV_TOKEN secret is not configured for this fork repo.
Set fail_ci_if_error: false so tests can pass even without coverage upload.

Git-Session-Id: 1c936159-41f7-5908-bb42-d2edfe93b754
@TimeToBuildBob

TimeToBuildBob commented Oct 6, 2026

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CI was failing because fail_ci_if_error: true on the Codecov upload step — the CODECOV_TOKEN secret is not configured for this fork repo, so every run errored at the upload step even when the tests passed.

Fixed in 4c8ad67: set fail_ci_if_error: false so CI passes on test success regardless of coverage upload status. New CI run should be green.
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@TimeToBuildBob
fix(tests): retry Anvil fork RPC flakes in v4 CI
09f420e 
Anvil fetches uncached v4 PoolManager storage from the public
ethereum.publicnode.com fork; a connection reset failed
test_estimate_price_impact while 109 other tests passed.

Pass --timeout/--retries to Anvil, poll the v4 fixture for readiness
instead of sleep(3), and rerun only RPC-flake errors via
pytest-rerunfailures.

Git-Session-Id: 7c8cac77-228e-5a5a-a581-b51cf272f6c3
@TimeToBuildBob

TimeToBuildBob commented Oct 6, 2026

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v4 CI was still red on 4c8ad67 — not Codecov this time.

test (v4, mainnet): 109 passed, then test_estimate_price_impact[ETH-USDC-1000ETH] died on an Anvil fork storage fetch:

failed to get storage for 0x000000000004444c5dc75cB358380D2e3dE08A90
MPP HTTP request to https://ethereum.publicnode.com/ failed: connection reset

The three smaller volumes of the same test passed; the 1000 ETH case needed uncached PoolManager slots and publicnode reset mid-fetch.

Pushed 09f420e:

  • Anvil --timeout 120000 --retries 15 on the v4 fixtures
  • Socket-poll readiness in test_uniswap4.py (it still used sleep(3))
  • pytest-rerunfailures with only_rerun limited to RPC-flake messages (assertion failures are not retried)

Fresh CI is running on this head. Next monitoring cycle can merge if v4 is green.
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@TimeToBuildBob
fix(tests): fork Anvil by block number on public RPCs
28ddcba 
publicnode cannot serve eth_getBalance by block hash, so Anvil genesis
failed with "block not found: hash …" and the v4 fixture timed out.
Use --fork-state-by-number, skip node-info probes, pin 32 blocks behind
latest, and fail immediately if Anvil exits during startup.

Git-Session-Id: 7c8cac77-228e-5a5a-a581-b51cf272f6c3
@TimeToBuildBob

TimeToBuildBob commented Oct 13, 2026

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Closing as obsolete. Upstream decided on 2026-10-11 in uniswap-python#479 that v1 CI coverage will be removed in the next release because v1 is deprecated, so the v1 UNI output-price xfail half of this PR has no target anymore. The fork's master should track upstream rather than carry its own CI patches (it is already 4 behind).

The other half, polling Anvil's RPC port instead of sleep(3) in the v4 fixtures, is still missing upstream (tests/test_uniswap4.py and tests/test_v4_examples.py both sleep 3s). That goes upstream as its own small PR instead; tracked in Bob's workspace as uniswap-python-anvil-startup-poll-upstream.
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@TimeToBuildBob TimeToBuildBob closed this Oct 13, 2026
@TimeToBuildBob TimeToBuildBob mentioned this pull request Oct 13, 2026
test(v4): poll Anvil startup instead of a fixed sleep uniswap-python/uniswap-python#486
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@TimeToBuildBob
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