CoCalc -- mock.js

Summer of Sage Days 2015: San Diego (sd64.25), etc.
react / wstein / node_modules / jest-cli / node_modules / istanbul / node_modules / resolve / test / mock.js
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var test = require('tape');
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var resolve = require('../');
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test('mock', function (t) {
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    t.plan(6);
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    var files = {
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        '/foo/bar/baz.js' : 'beep'
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    };
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    function opts (basedir) {
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        return {
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            basedir : basedir,
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            isFile : function (file, cb) {
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                cb(null, files.hasOwnProperty(file));
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            },
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            readFile : function (file, cb) {
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                cb(null, files[file]);
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            }
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        }
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    }
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    resolve('./baz', opts('/foo/bar'), function (err, res, pkg) {
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        if (err) t.fail(err);
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        t.equal(res, '/foo/bar/baz.js');
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        t.equal(pkg, undefined);
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    });
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    resolve('./baz.js', opts('/foo/bar'), function (err, res, pkg) {
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        if (err) t.fail(err);
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        t.equal(res, '/foo/bar/baz.js');
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        t.equal(pkg, undefined);
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    });
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    resolve('baz', opts('/foo/bar'), function (err, res) {
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        t.equal(err.message, "Cannot find module 'baz' from '/foo/bar'");
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    });
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    resolve('../baz', opts('/foo/bar'), function (err, res) {
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        t.equal(err.message, "Cannot find module '../baz' from '/foo/bar'");
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    });
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});
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test('mock from package', function (t) {
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    t.plan(6);
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    var files = {
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        '/foo/bar/baz.js' : 'beep'
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    };
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    function opts (basedir) {
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        return {
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            basedir : basedir,
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            package : { main: 'bar' },
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            isFile : function (file, cb) {
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                cb(null, files.hasOwnProperty(file));
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            },
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            readFile : function (file, cb) {
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                cb(null, files[file]);
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            }
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        }
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    }
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    resolve('./baz', opts('/foo/bar'), function (err, res, pkg) {
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        if (err) t.fail(err);
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        t.equal(res, '/foo/bar/baz.js');
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        t.equal(pkg.main, 'bar');
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    });
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    resolve('./baz.js', opts('/foo/bar'), function (err, res, pkg) {
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        if (err) t.fail(err);
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        t.equal(res, '/foo/bar/baz.js');
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        t.equal(pkg.main, 'bar');
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    });
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    resolve('baz', opts('/foo/bar'), function (err, res) {
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        t.equal(err.message, "Cannot find module 'baz' from '/foo/bar'");
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    });
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    resolve('../baz', opts('/foo/bar'), function (err, res) {
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        t.equal(err.message, "Cannot find module '../baz' from '/foo/bar'");
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    });
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});
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test('mock package', function (t) {
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    t.plan(2);
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    var files = {
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        '/foo/node_modules/bar/baz.js' : 'beep',
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        '/foo/node_modules/bar/package.json' : JSON.stringify({
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            main : './baz.js'
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        })
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    };
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    function opts (basedir) {
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        return {
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            basedir : basedir,
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            isFile : function (file, cb) {
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                cb(null, files.hasOwnProperty(file));
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            },
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            readFile : function (file, cb) {
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                cb(null, files[file]);
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            }
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        }
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    }
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    resolve('bar', opts('/foo'), function (err, res, pkg) {
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        if (err) t.fail(err);
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        t.equal(res, '/foo/node_modules/bar/baz.js');
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        t.equal(pkg.main, './baz.js');
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    });
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});
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test('mock package from package', function (t) {
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    t.plan(2);
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    var files = {
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        '/foo/node_modules/bar/baz.js' : 'beep',
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        '/foo/node_modules/bar/package.json' : JSON.stringify({
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            main : './baz.js'
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        })
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    };
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    function opts (basedir) {
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        return {
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            basedir : basedir,
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            package : { main: 'bar' },
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            isFile : function (file, cb) {
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                cb(null, files.hasOwnProperty(file));
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            },
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            readFile : function (file, cb) {
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                cb(null, files[file]);
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            }
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        }
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    }
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    resolve('bar', opts('/foo'), function (err, res, pkg) {
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        if (err) t.fail(err);
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        t.equal(res, '/foo/node_modules/bar/baz.js');
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        t.equal(pkg.main, './baz.js');
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    });
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});
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