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describe('Core helper tests', function() {
var helpers;
beforeAll(function() {
helpers = window.Chart.helpers;
});
it('should generate integer ids', function() {
var uid = helpers.uid();
expect(uid).toEqual(jasmine.any(Number));
expect(helpers.uid()).toBe(uid + 1);
expect(helpers.uid()).toBe(uid + 2);
expect(helpers.uid()).toBe(uid + 3);
});
describe('clone', function() {
it('should not allow prototype pollution', function() {
const test = helpers.clone(JSON.parse('{"__proto__":{"polluted": true}}'));
expect(test.prototype).toBeUndefined();
expect(Object.prototype.polluted).toBeUndefined();
});
});
});