var fs = require('fs'); var path = require('path'); var test = require('tape'); var resolve = require('../');

test('$NODE_PATH', function (t) {

t.plan(8);

var isDir = function (dir, cb) {
    if (dir === '/node_path' || dir === 'node_path/x') {
        return cb(null, true);
    }
    fs.stat(dir, function (err, stat) {
        if (!err) {
            return cb(null, stat.isDirectory());
        }
        if (err.code === 'ENOENT' || err.code === 'ENOTDIR') return cb(null, false);
        return cb(err);
    });
};

resolve('aaa', {
    paths: [
        path.join(__dirname, '/node_path/x'),
        path.join(__dirname, '/node_path/y')
    ],
    basedir: __dirname,
    isDirectory: isDir
}, function (err, res) {
    t.error(err);
    t.equal(res, path.join(__dirname, '/node_path/x/aaa/index.js'), 'aaa resolves');
});

resolve('bbb', {
    paths: [
        path.join(__dirname, '/node_path/x'),
        path.join(__dirname, '/node_path/y')
    ],
    basedir: __dirname,
    isDirectory: isDir
}, function (err, res) {
    t.error(err);
    t.equal(res, path.join(__dirname, '/node_path/y/bbb/index.js'), 'bbb resolves');
});

resolve('ccc', {
    paths: [
        path.join(__dirname, '/node_path/x'),
        path.join(__dirname, '/node_path/y')
    ],
    basedir: __dirname,
    isDirectory: isDir
}, function (err, res) {
    t.error(err);
    t.equal(res, path.join(__dirname, '/node_path/x/ccc/index.js'), 'ccc resolves');
});

// ensure that relative paths still resolve against the regular `node_modules` correctly
resolve('tap', {
    paths: [
        'node_path'
    ],
    basedir: path.join(__dirname, 'node_path/x'),
    isDirectory: isDir
}, function (err, res) {
    var root = require('tap/package.json').main;
    t.error(err);
    t.equal(res, path.resolve(__dirname, '..', 'node_modules/tap', root), 'tap resolves');
});

});