chore(tests): add some integration tests

Author: nlf

test/escape.js

@@ -1,6 +1,12 @@
+'use strict'
+
+const { writeFileSync: writeFile, unlinkSync: unlink, chmodSync: chmod } = require('fs')
+const { join } = require('path')
 const t = require('tap')
+const promiseSpawn = require('@npmcli/promise-spawn')
 
 const escape = require('../lib/escape.js')
+const isWindows = process.platform === 'win32'
 
 t.test('sh', (t) => {
   const expectations = [
@@ -17,11 +23,29 @@ t.test('sh', (t) => {
     [`'--arg=npm exec -c "$1"'`, `\\''--arg=npm exec -c "$1"'\\'`],
   ]
 
-  t.plan(expectations.length)
   for (const [input, expectation] of expectations) {
     t.equal(escape.sh(input), expectation,
       `expected to escape \`${input}\` to \`${expectation}\``)
   }
+
+  t.test('integration', { skip: isWindows && 'posix only' }, async (t) => {
+    const dir = t.testdir()
+
+    for (const [input] of expectations) {
+      const filename = join(dir, 'posix.sh')
+      const script = `#!/usr/bin/env sh\nnode -p process.argv[1] -- ${escape.sh(input)}`
+      writeFile(filename, script)
+      chmod(filename, '0755')
+      const p = await promiseSpawn('sh', ['-c', filename], { stdioString: true })
+      const stdout = p.stdout.trim()
+      t.equal(input, stdout, 'actual output matches input')
+      unlink(filename)
+    }
+
+    t.end()
+  })
+
+  t.end()
 })
 
 t.test('cmd', (t) => {
@@ -72,9 +96,34 @@ t.test('cmd', (t) => {
     ['hello %PATH%', '^^^"hello %%PATH%%^^^"', true],
   ]
 
-  t.plan(expectations.length)
   for (const [input, expectation, double] of expectations) {
     const msg = `expected to${double ? ' double' : ''} escape \`${input}\` to \`${expectation}\``
     t.equal(escape.cmd(input, double), expectation, msg)
   }
+
+  t.test('integration', { skip: !isWindows && 'Windows only' }, async (t) => {
+    const dir = t.testdir()
+
+    for (const [input,, double] of expectations) {
+      const filename = join(dir, 'win.cmd')
+      if (double) {
+        const shimFile = join(dir, 'shim.cmd')
+        const shim = `@echo off\nnode -p process.argv[1] -- %*`
+        writeFile(shimFile, shim)
+        const script = `@echo off\n.\\\\shim.cmd ${escape.cmd(input, double)}`
+        writeFile(filename, script)
+      } else {
+        const script = `@echo off\nnode -p process.argv[1] -- ${escape.cmd(input)}`
+        writeFile(filename, script)
+      }
+      const p = await promiseSpawn('cmd', ['/d', '/s', '/c', filename], { stdioString: true })
+      const stdout = p.stdout.trim()
+      t.equal(input, stdout, 'actual output matches input')
+      unlink(filename)
+    }
+
+    t.end()
+  })
+
+  t.end()
 })