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evals: preflight ping once in the sharded parent, not per shard

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The Anthropic fail-fast ping ran at module load in every paid test file
importing e2e-helpers — ~30 paid claude -p calls (30s timeout each) per
full sharded run for one bit of information. The parent now pings once
before spawning shards and sets EVALS_PREFLIGHT_OK=1; the module-load
path honors the flag. Extracted to test/helpers/anthropic-preflight.ts
(injectable spawn seam) with regression pins in both directions: the
flag must skip, its absence must ping exactly once, dead API must throw.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Garry Tan
2026-08-15 08:13:30 -07:00
co-authored by Claude Fable 5
parent f9e3fc8ab4
commit 6d109d3232
4 changed files with 102 additions and 9 deletions
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test/helpers/e2e-helpers.ts
+6 -8
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@@ -15,6 +15,7 @@ import { selectTests, detectBaseBranch, getChangedFiles, E2E_TOUCHFILES, E2E_TIE
import { WorktreeManager } from '../../lib/worktree';
import type { HarvestResult } from '../../lib/worktree';
import { spawnSync } from 'child_process';
import { preflightAnthropicApi } from './anthropic-preflight';
import * as fs from 'fs';
import * as path from 'path';
import * as os from 'os';
@@ -260,15 +261,12 @@ if (evalsEnabled) {
}
}
// Fail fast if Anthropic API is unreachable — don't burn through tests getting ConnectionRefused
// Fail fast if Anthropic API is unreachable — don't burn through tests getting
// ConnectionRefused. The sharded paid runner pings once in the parent and sets
// EVALS_PREFLIGHT_OK=1 for its children, so per-file module loads skip this
// (was: ~30 paid pings per full sharded run, one per importing file).
if (evalsEnabled) {
const check = spawnSync('sh', ['-c', 'echo "ping" | claude -p --max-turns 1 --output-format stream-json --verbose --dangerously-skip-permissions'], {
stdio: 'pipe', timeout: 30_000,
});
const output = check.stdout?.toString() || '';
if (output.includes('ConnectionRefused') || output.includes('Unable to connect')) {
throw new Error('Anthropic API unreachable — aborting E2E suite. Fix connectivity and retry.');
}
preflightAnthropicApi();
}
/** Skip an individual test if not selected (for multi-test describe blocks). */