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'use strict'
const Bluebird = require('bluebird')
const test = require('tap').test
const requireInject = require('require-inject')
const findPrefix = requireInject('../find-prefix.js', {
fs: {
readdir: mockReaddir
}
})
test('find-prefix', t => {
const tests = {
'/Users/example/code/test1/node_modules': '/Users/example/code/test1',
'/Users/example/code/test1/node_modules/node_modules': '/Users/example/code/test1',
'/Users/example/code/test1/sub1': '/Users/example/code/test1',
'/Users/example/code/test1/sub1/sub1a': '/Users/example/code/test1',
'/Users/example/code/test2': '/Users/example/code/test2',
'/Users/example/code/test2/sub2': '/Users/example/code/test2',
'/Users/example/code': '/Users/example/code',
'/Users/example': '/Users/example',
'/does/not/exist': '/does/not/exist'
}
t.plan(Object.keys(tests).length)
return Bluebird.map(Object.keys(tests), dir => {
return findPrefix(dir).then(pre => {
t.is(pre, tests[dir], dir)
})
})
})
test('fail-prefix', t => {
return findPrefix('/Users/example/eperm').then(pre => {
t.fail('no eperm')
}).catch(err => {
t.is(err.code, 'EPERM', 'got perm error')
})
})
const fixture = {
'Users': {
'example': {
'code': {
'test1': {
'node_modules': {
'node_modules': {}
},
'sub1': {
'sub1a': {}
}
},
'test2': {
'package.json': {},
'sub2': {}
}
}
}
}
}
function mockReaddir (dir, cb) {
if (/eperm/.test(dir)) {
const err = new Error('Can not read: ' + dir)
err.code = 'EPERM'
return cb(err)
}
const parts = dir.split(/\//).slice(1)
let cwd = fixture
let part
while (part = parts.shift()) {
if (part in cwd) {
cwd = cwd[part]
} else {
const err = new Error('Does not exist: ' + dir + ' * ' + part)
err.code = 'ENOENT'
return cb(err)
}
}
return cb(null, Object.keys(cwd))
}
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