Commit fae6ef8

@@ -0,0 +1,46 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { suite } from 'uvu'
+import * as assert from 'uvu/assert'
+import { exitCodeInfo, randomId, noop, isString, quote } from '../build/util.js'
+
+const test = suite('util')
+
+test('exitCodeInfo()', () => {
+  assert.ok(exitCodeInfo(2) === 'Misuse of shell builtins')
+})
+
+test('randomId()', () => {
+  assert.ok(/^[a-z0-9]+$/.test(randomId()))
+  assert.ok(
+    new Set(Array.from({ length: 1000 }).map(() => randomId())).size === 1000
+  )
+})
+
+test('noop()', () => {
+  assert.ok(noop() === undefined)
+})
+
+test('isString()', () => {
+  assert.ok(isString('string'))
+  assert.not.ok(isString(1))
+})
+
+test('quote()', () => {
+  assert.ok(quote('string') === 'string')
+  assert.ok(quote(`'\f\n\r\t\v\0`) === `$'\\'\\f\\n\\r\\t\\v\\0'`)
+})
+
+test.run()