angular-cn/packages/zone.js/test/node/Error.spec.ts

41 lines
1.5 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
describe('ZoneAwareError', () => {
// If the environment does not supports stack rewrites, then these tests will fail
// and there is no point in running them.
if (!(Error as any)['stackRewrite']) return;
it('should have all properties from NativeError', () => {
let obj: any = new Object();
Error.captureStackTrace(obj);
expect(obj.stack).not.toBeUndefined();
});
it('should support prepareStackTrace', () => {
const originalPrepareStackTrace = (<any>Error).prepareStackTrace;
(<any>Error).prepareStackTrace = function(error: Error, stack: string) { return stack; };
let obj: any = new Object();
Error.captureStackTrace(obj);
expect(obj.stack[0].getFileName()).not.toBeUndefined();
(<any>Error).prepareStackTrace = originalPrepareStackTrace;
});
it('should not add additional stacktrace from Zone when use prepareStackTrace', () => {
const originalPrepareStackTrace = (<any>Error).prepareStackTrace;
(<any>Error).prepareStackTrace = function(error: Error, stack: string) { return stack; };
let obj: any = new Object();
Error.captureStackTrace(obj);
expect(obj.stack.length).not.toBe(0);
obj.stack.forEach(function(st: any) {
expect(st.getFunctionName()).not.toEqual('zoneCaptureStackTrace');
});
(<any>Error).prepareStackTrace = originalPrepareStackTrace;
});
});