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094f9f1d43
Extra High MERGE AFTER FIX: source-scraping the setup file treated a comment containing 'HERMES_HOME' as isolation. The lists now live in a side-effect-free module that applyIsolation and the declaration test both import. Comment-only sabotage fails with hermes:HERMES_HOME.
67 lines
3.4 KiB
TypeScript
67 lines
3.4 KiB
TypeScript
// Vitest setup file: isolates every test from the developer's shell environment.
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//
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// codeburn discovers sessions through a long list of provider-specific env
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// vars (CLAUDE_CONFIG_DIR, CODEX_HOME, HERMES_HOME, CRUSH_GLOBAL_DATA, …) and
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// via HOME / XDG_* / APPDATA / LOCALAPPDATA. Without this file, any value set
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// in the developer's shell (e.g. HERMES_HOME=/Users/me/.hermes) bleeds into
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// fixture-based tests: the parser reads the developer's REAL sessions instead
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// of the temp-dir fixture, producing nonsense totals and false failures that
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// pass on a clean CI runner. tests/env-isolation-declarations.test.ts fails
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// closed if PROVIDER_ENV_VARS grows a data-dir override that is not listed.
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//
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// What this file does:
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// 1. Mints an empty sandbox temp dir once per worker.
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// 2. REDIRECTED vars (HOME / XDG_* / APPDATA / LOCALAPPDATA) point at the
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// sandbox so any fallback to homedir() / platform defaults lands in an
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// empty filesystem.
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// 3. CLEARED vars (every provider's explicit override) are deleted so a test
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// that does NOT set one gets "unconfigured" rather than the dev's value.
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// 4. PRESERVED vars (PATH, COLUMNS, …) are snapshotted from the dev's shell
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// and restored every test. We can't wipe them - Node uses PATH for spawn
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// and module resolution, terminal code uses COLUMNS - but a test that
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// mutates them shouldn't leak the change into the next test.
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// 5. Re-asserts the above before EVERY test (global beforeEach), so a test
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// that mutates an env var doesn't leak its value into the next test.
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// Tests can freely set process.env['HOME'] = customDir without saving the
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// previous value - the next test gets a fresh sandbox baseline.
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//
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// CAVEAT: env vars set in a test file's beforeAll() get overwritten by this
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// file's beforeEach before each test runs. Use beforeEach (not beforeAll) when
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// the test body depends on a specific env var value.
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import { mkdtempSync } from 'fs'
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import { tmpdir } from 'os'
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import { join } from 'path'
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import { beforeEach } from 'vitest'
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import { CLEARED, PRESERVED, REDIRECTED } from './env-isolation-vars.js'
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const sandbox = mkdtempSync(join(tmpdir(), 'codeburn-test-env-'))
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const preservedSnapshot = new Map<string, string | undefined>()
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for (const key of PRESERVED) preservedSnapshot.set(key, process.env[key])
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function applyIsolation(): void {
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for (const key of REDIRECTED) process.env[key] = sandbox
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for (const key of CLEARED) delete process.env[key]
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for (const key of PRESERVED) {
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const original = preservedSnapshot.get(key)
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if (original === undefined) delete process.env[key]
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else process.env[key] = original
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}
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// Price off the bundled LiteLLM snapshot only. Without this, loadPricing()
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// fetches the live upstream table, so a mid-week reprice by a provider turns
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// pricing assertions red with no local change.
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process.env['CODEBURN_PRICING_SNAPSHOT_ONLY'] = '1'
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// Same for FX: skip the live Frankfurter fetch and fall back to the
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// USD-equivalent rate unless a test seeds its own exchange-rate.json cache.
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process.env['CODEBURN_FX_NO_FETCH'] = '1'
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// Pin the timezone so date grouping is deterministic regardless of the dev's
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// shell TZ. Clearing it is not enough (Node falls back to the OS zone); a
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// non-UTC TZ would otherwise shift day buckets versus a clean CI runner. A
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// test that needs a specific zone can still set process.env.TZ in beforeEach.
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process.env.TZ = 'UTC'
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}
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applyIsolation()
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beforeEach(applyIsolation)
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