test: check that prepublish warning happens on npm i, too

PR-URL: npm/npm#14290
Credit: @zkat
Reviewed-By: @othiym23

test/tap/prepublish.js

@@ -38,7 +38,7 @@ test('setup', function (t) {
   }
 })
 
-test('test', function (t) {
+test('prepublish deprecation warning on `npm pack`', function (t) {
   var env = {
     'npm_config_cache': cache,
     'npm_config_tmp': tmp,
@@ -68,11 +68,45 @@ test('test', function (t) {
       'ok\\r?\\n' +
       'npm-test-prepublish-1.2.5.tgz', 'ig')
 
-    t.ok(c.match(regex))
+    t.match(c, regex)
     t.end()
   })
 })
 
+test('prepublish deprecation warning on `npm install`', function (t) {
+  var env = {
+    'npm_config_cache': cache,
+    'npm_config_tmp': tmp,
+    'npm_config_prefix': pkg,
+    'npm_config_global': 'false'
+  }
+
+  for (var i in process.env) {
+    if (!/^npm_config_/.test(i)) {
+      env[i] = process.env[i]
+    }
+  }
+
+  common.npm([
+    'install',
+    '--loglevel', 'warn'
+  ], { cwd: pkg, env: env }, function (err, code, stdout, stderr) {
+    t.equal(code, 0, 'pack finished successfully')
+    t.ifErr(err, 'pack finished successfully')
+
+    t.match(stderr, /`prepublish` scripts will run only for `npm publish`/)
+    var c = stdout.trim()
+    var regex = new RegExp('' +
+      '> [email protected] prepublish [^\\r\\n]+\\r?\\n' +
+      '> echo ok\\r?\\n' +
+      '\\r?\\n' +
+      'ok' +
+      '', 'ig')
+
+    t.match(c, regex)
+    t.end()
+  })
+})
 test('cleanup', function (t) {
   cleanup()
   t.pass('cleaned up')