chore: use a local instead of remote file for test

I was able to replicate the same behavior from #332 by piping a readable
stream with a `highWaterMark` of 1 to extract. I confirmed this test
still failed without the fixes from #332 and now passes.

test/extract.js

@@ -11,7 +11,6 @@ const { promisify } = require('util')
 const rimraf = promisify(require('rimraf'))
 const mutateFS = require('mutate-fs')
 const pipeline = promisify(require('stream').pipeline)
-const https = require('https')
 
 t.teardown(_ => rimraf(extractdir))
 
@@ -57,6 +56,7 @@ t.test('basic extracting', t => {
 })
 
 t.test('ensure an open stream is not prematuraly closed', t => {
+  t.plan(1)
   const dir = path.resolve(extractdir, 'basic-with-stream')
 
   t.beforeEach(async () => {
@@ -65,18 +65,19 @@ t.test('ensure an open stream is not prematuraly closed', t => {
   })
 
   const check = async t => {
-    fs.lstatSync(dir + '/node-tar-main/LICENSE')
+    t.ok(fs.lstatSync(dir + '/long-path'))
     await rimraf(dir)
     t.end()
   }
 
   t.test('async promisey', t => {
-    https.get('https://codeload.github.com/npm/node-tar/tar.gz/main', (stream) => {
-      return pipeline(
-        stream,
-        x({ cwd: dir }, ['node-tar-main/LICENSE'])
-      ).then(_ => check(t))
+    const stream = fs.createReadStream(path.resolve(tars, 'long-paths.tar'), {
+      highWaterMark: 1,
     })
+    pipeline(
+      stream,
+      x({ cwd: dir })
+    ).then(_ => check(t))
   })
 
   t.end()