fix(ping): ping throws error when registry is offline

lib/utils/ping.js

@@ -2,6 +2,6 @@
 // used by the ping and doctor commands
 const fetch = require('npm-registry-fetch')
 module.exports = async (flatOptions) => {
-  const res = await fetch('/-/ping?write=true', flatOptions)
+  const res = await fetch('/-/ping?write=true', { ...flatOptions, cache: false })
   return res.json().catch(() => ({}))
 }

test/lib/commands/ping.js

@@ -1,6 +1,8 @@
 const t = require('tap')
 const { load: loadMockNpm } = require('../../fixtures/mock-npm.js')
 const MockRegistry = require('@npmcli/mock-registry')
+const cacache = require('cacache')
+const path = require('node:path')
 
 t.test('no details', async t => {
   const { npm, logs, joinedOutput } = await loadMockNpm(t)
@@ -74,3 +76,19 @@ t.test('invalid json', async t => {
     details: {},
   })
 })
+t.test('fail when registry is unreachable', async t => {
+  const { npm } = await loadMockNpm(t, {
+    config: { registry: 'https://ur.npmlocal.npmtest/' },
+    cacheDir: { _cacache: {} },
+  })
+  const url = `${npm.config.get('registry')}-/ping?write=true`
+  const cache = path.join(npm.cache, '_cacache')
+  await cacache.put(cache,
+    `make-fetch-happen:request-cache:${url}`,
+    '{}', { metadata: { url } }
+  )
+  t.rejects(npm.exec('ping', []), {
+    code: 'ENOTFOUND',
+  },
+  'throws ENOTFOUND error')
+})