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'use strict';
require('mocha');
var assert = require('assert');
var isDescriptor = require('./');
var noop = function() {};
describe('isDescriptor', function() {
describe('value type', function() {
it('should be false when not an object:', function() {
assert(!isDescriptor('a'));
assert(!isDescriptor(null));
assert(!isDescriptor([]));
});
});
describe('data descriptor:', function() {
it('should not be false when the object has invalid properties:', function() {
assert(isDescriptor({value: 'foo', bar: 'baz'}));
assert(isDescriptor({value: 'foo', bar: 'baz'}));
assert(isDescriptor({value: 'foo', get: noop}));
assert(isDescriptor({get: noop, value: noop}));
});
it('should be true when the object has valid data-descriptor properties', function() {
assert(isDescriptor({value: 'foo'}));
assert(isDescriptor({value: noop}));
});
it('should be false when valid properties are invalid types', function() {
assert(!isDescriptor({value: 'foo', enumerable: 'foo'}));
assert(!isDescriptor({value: 'foo', configurable: 'foo'}));
assert(!isDescriptor({value: 'foo', writable: 'foo'}));
});
it('should be true when a value is a valid data descriptor', function() {
assert(isDescriptor({value: 'foo'}));
assert(isDescriptor({writable: true}));
assert(isDescriptor({value: 'foo', get: 'foo'}));
});
it('should be false when the value is not a valid descriptor', function() {
assert(!isDescriptor('foo'));
assert(!isDescriptor({}));
assert(!isDescriptor({configurable: true}));
assert(!isDescriptor({enumerable: true}));
assert(!isDescriptor({
get: undefined,
set: undefined,
enumerable: true,
configurable: true
}));
});
});
});
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