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unboundedpress/node_modules/require_optional/test/require_optional_tests.js

60 lines
2.0 KiB
JavaScript

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