a4f93ce250
Change-detectors, tautologies, source-reading tests, redundant duplicates, mock-echo tests and dead/unrunnable tests. Per-test rationale in the lane ledger (category + reason for every removal).
83 lines
3.3 KiB
TypeScript
83 lines
3.3 KiB
TypeScript
import assert from 'node:assert/strict'
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import { test } from 'vitest'
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import { describeGitSpawnFailure, selectRunnableBinary } from './select-runnable-binary'
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const yes = () => true
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const no = () => false
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test.each([
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{
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// The reported machine: Intel-only /usr/local/bin/git ahead on PATH of a
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// working /usr/bin/git — it exists, so existence-only selection commits to
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// it, and it fails at spawn with errno -86 (Bad CPU type in executable).
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name: 'an existing but unlaunchable earlier candidate is skipped for a later one that runs',
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candidates: ['/usr/local/bin/git', '/usr/bin/git'],
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binaryRuns: (p: string) => p === '/usr/bin/git',
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expected: '/usr/bin/git'
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},
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{
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name: 'the first candidate wins when it both exists and runs',
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candidates: ['/opt/homebrew/bin/gh', '/usr/local/bin/gh'],
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binaryRuns: yes,
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expected: '/opt/homebrew/bin/gh'
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},
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{
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// Preserves pre-probe behaviour where the probe itself cannot run
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// (locked-down execution policy, AV interposing on spawn) instead of
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// skipping a binary that would have worked.
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name: 'when no candidate runs, fall back to the first that exists',
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candidates: ['/usr/local/bin/git', '/usr/bin/git'],
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binaryRuns: no,
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expected: '/usr/local/bin/git'
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}
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])('$name', ({ candidates, binaryRuns, expected }) => {
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assert.equal(selectRunnableBinary({ candidates, fileExists: yes, binaryRuns }), expected)
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})
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test('missing candidates are never probed, and nothing existing yields null for the caller fallback', () => {
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// Probing a non-existent path would cost a failed spawn per candidate.
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const probed: string[] = []
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const result = selectRunnableBinary({
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candidates: ['/opt/homebrew/bin/gh', '/usr/local/bin/gh', '/usr/bin/gh'],
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fileExists: (p: string) => p === '/usr/bin/gh',
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binaryRuns: (p: string) => {
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probed.push(p)
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return true
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}
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})
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assert.equal(result, '/usr/bin/gh')
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assert.deepEqual(probed, ['/usr/bin/gh'])
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assert.equal(selectRunnableBinary({ candidates: ['/opt/homebrew/bin/gh'], fileExists: no, binaryRuns: no }), null)
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assert.equal(selectRunnableBinary({ candidates: [], fileExists: yes, binaryRuns: yes }), null)
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})
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test.each([
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{
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// The reported machine: Darwin errno 86 (Bad CPU type) reaches Node as a
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// bare `errno: -86` with no `code` — "spawn Unknown system error -86".
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name: 'EBADARCH via errno -86 names the binary and the CPU-type cause',
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error: { errno: -86, syscall: 'spawn', message: 'spawn Unknown system error -86' },
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expected: /\/usr\/local\/bin\/git.*Bad CPU type/
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},
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{
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name: 'ENOENT reads as a missing binary',
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error: { code: 'ENOENT', errno: -2, syscall: 'spawn /usr/local/bin/git' },
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expected: /\/usr\/local\/bin\/git: not found/
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}
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])('$name', ({ error, expected }) => {
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assert.match(describeGitSpawnFailure(error, '/usr/local/bin/git') ?? '', expected)
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})
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test('a git that ran and exited nonzero is not a spawn failure and keeps its own wording', () => {
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// Nonzero exits never fire the child 'error' event; only spawn-level
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// failures (binary missing / not executable / wrong architecture) do.
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assert.equal(describeGitSpawnFailure(new Error('fatal: not a git repository'), '/usr/bin/git'), null)
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assert.equal(describeGitSpawnFailure({ code: 'ETIMEDOUT' }, '/usr/bin/git'), null)
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})
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