1.22.2.4

cache-ls-filenames.js
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			var t = require('tap')
			var path = require('path')
			var fs = require('fs')
			var mkdirp = require('mkdirp')
			var rimraf = require('rimraf')
			var spawn = require('child_process').spawn
			var npm = require.resolve('../../bin/npm-cli.js')
			var dir = path.resolve(__dirname, 'cache-ls-filenames')
			var node = process.execPath

			t.test('setup', function (t) {
			rimraf.sync(dir)
			mkdirp.sync(dir + '/a/b/c/d')
			for (var i = 0; i < 5; i++) {
			fs.writeFileSync(dir + '/file-' + i, 'x\n')
			fs.writeFileSync(dir + '/a/b/file-' + i, 'x\n')
			}
			t.end()
			})

			function test (t, args) {
			var child = spawn(node, [npm, 'cache', 'ls', '--cache=' + dir].concat(args))
			var out = ''
			child.stdout.on('data', function (c) {
			out += c
			})
			child.on('close', function (code, signal) {
			t.equal(code, 0)
			t.equal(signal, null)
			out.trim().split(/[\n\r]+/).map(function (filename) {
			return filename.replace(/^~/, process.env.HOME)
			}).forEach(function (file) {
			// verify that all exist
			t.ok(fs.existsSync(file), 'exists: ' + file)
			})
			t.end()
			})
			}

			t.test('without path arg', function (t) {
			test(t, [])
			})

			t.test('with path arg', function (t) {
			test(t, ['a'])
			})

			t.test('cleanup', function (t) {
			rimraf.sync(dir)
			t.end()
			})