'use strict';

const common = require('../common');
const assert = require('assert');
const _module = require('module');

const cases = {
  'WIN': [{
    file: 'C:\\Users\\hefangshi\\AppData\\Roaming\
\\npm\\node_modules\\npm\\node_modules\\minimatch',
    expect: [
      'C:\\Users\\hefangshi\\AppData\\Roaming\
\\npm\\node_modules\\npm\\node_modules\\minimatch\\node_modules',
      'C:\\Users\\hefangshi\\AppData\\Roaming\
\\npm\\node_modules\\npm\\node_modules',
      'C:\\Users\\hefangshi\\AppData\\Roaming\\npm\\node_modules',
      'C:\\Users\\hefangshi\\AppData\\Roaming\\node_modules',
      'C:\\Users\\hefangshi\\AppData\\node_modules',
      'C:\\Users\\hefangshi\\node_modules',
      'C:\\Users\\node_modules',
      'C:\\node_modules'
    ]
  }, {
    file: 'C:\\Users\\Rocko Artischocko\\node_stuff\\foo',
    expect: [
      'C:\\Users\\Rocko Artischocko\\node_stuff\\foo\\node_modules',
      'C:\\Users\\Rocko Artischocko\\node_stuff\\node_modules',
      'C:\\Users\\Rocko Artischocko\\node_modules',
      'C:\\Users\\node_modules',
      'C:\\node_modules'
    ]
  }, {
    file: 'C:\\Users\\Rocko Artischocko\\node_stuff\\foo_node_modules',
    expect: [
      'C:\\Users\\Rocko \
Artischocko\\node_stuff\\foo_node_modules\\node_modules',
      'C:\\Users\\Rocko Artischocko\\node_stuff\\node_modules',
      'C:\\Users\\Rocko Artischocko\\node_modules',
      'C:\\Users\\node_modules',
      'C:\\node_modules'
    ]
  }, {
    file: 'C:\\node_modules',
    expect: [
      'C:\\node_modules'
    ]
  }, {
    file: 'C:\\',
    expect: [
      'C:\\node_modules'
    ]
  }],
  'POSIX': [{
    file: '/usr/lib/node_modules/npm/node_modules/\
node-gyp/node_modules/glob/node_modules/minimatch',
    expect: [
      '/usr/lib/node_modules/npm/node_modules/\
node-gyp/node_modules/glob/node_modules/minimatch/node_modules',
      '/usr/lib/node_modules/npm/node_modules/\
node-gyp/node_modules/glob/node_modules',
      '/usr/lib/node_modules/npm/node_modules/node-gyp/node_modules',
      '/usr/lib/node_modules/npm/node_modules',
      '/usr/lib/node_modules',
      '/usr/node_modules',
      '/node_modules'
    ]
  }, {
    file: '/usr/test/lib/node_modules/npm/foo',
    expect: [
      '/usr/test/lib/node_modules/npm/foo/node_modules',
      '/usr/test/lib/node_modules/npm/node_modules',
      '/usr/test/lib/node_modules',
      '/usr/test/node_modules',
      '/usr/node_modules',
      '/node_modules'
    ]
  }, {
    file: '/usr/test/lib/node_modules/npm/foo_node_modules',
    expect: [
      '/usr/test/lib/node_modules/npm/foo_node_modules/node_modules',
      '/usr/test/lib/node_modules/npm/node_modules',
      '/usr/test/lib/node_modules',
      '/usr/test/node_modules',
      '/usr/node_modules',
      '/node_modules'
    ]
  }, {
    file: '/node_modules',
    expect: [
      '/node_modules'
    ]
  }, {
    file: '/',
    expect: [
      '/node_modules'
    ]
  }]
};

const platformCases = common.isWindows ? cases.WIN : cases.POSIX;
platformCases.forEach((c) => {
  const paths = _module._nodeModulePaths(c.file);
  assert.deepStrictEqual(c.expect, paths, 'case ' + c.file +
    ' failed, actual paths is ' + JSON.stringify(paths));
});