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60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
6 years ago
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var assert = require('assert'),
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require_optional = require('../'),
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nestedTest = require('./nestedTest');
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describe('Require Optional', function() {
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describe('top level require', function() {
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it('should correctly require co library', function() {
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var promise = require_optional('es6-promise');
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assert.ok(promise);
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});
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it('should fail to require es6-promise library', function() {
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try {
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require_optional('co');
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} catch(e) {
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assert.equal('OPTIONAL_MODULE_NOT_FOUND', e.code);
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return;
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}
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assert.ok(false);
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});
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it('should ignore optional library not defined', function() {
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assert.equal(undefined, require_optional('es6-promise2'));
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});
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});
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describe('internal module file require', function() {
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it('should correctly require co library', function() {
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var Long = require_optional('bson/lib/bson/long.js');
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assert.ok(Long);
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});
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});
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describe('top level resolve', function() {
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it('should correctly use exists method', function() {
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assert.equal(false, require_optional.exists('co'));
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assert.equal(true, require_optional.exists('es6-promise'));
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assert.equal(true, require_optional.exists('bson/lib/bson/long.js'));
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assert.equal(false, require_optional.exists('es6-promise2'));
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});
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});
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describe('require_optional inside dependencies', function() {
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it('should correctly walk up module call stack searching for peerOptionalDependencies', function() {
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assert.ok(nestedTest.findPackage('bson'))
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});
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it('should return null when a package is defined in top-level package.json but not installed', function() {
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assert.equal(null, nestedTest.findPackage('es6-promise2'))
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});
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it('should error when searching for an optional dependency that is not defined in any ancestor package.json', function() {
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try {
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nestedTest.findPackage('bison')
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} catch (err) {
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assert.equal(err.message, 'no optional dependency [bison] defined in peerOptionalDependencies in any package.json')
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}
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})
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});
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});
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