Extendify / 3.1.0

Extendify v3.1.0

extendify / tests / unit / QuickEdit / lib / save-bridge.test.js

save-bridge.test.js in Extendify 3.1.0, at tests/unit/QuickEdit/lib/save-bridge.test.js

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1	// Pins the save-bridge contract: register/unregister, saveSelected is a
2	// no-op without a registered saver, the agent-submit window event fires
3	// the saver with alsoClear: true.
4
5	import {
6	AGENT_SUBMIT_EVENT,
7	hasSaver,
8	registerSaver,
9	saveSelected,
10	unregisterSaver,
11	} from '@quick-edit/lib/save-bridge';
12
13	afterEach(() => {
14	unregisterSaver(unregisterSaver);
15	});
16
17	describe('save-bridge', () => {
18	it('hasSaver is false before any registration', () => {
19	expect(hasSaver()).toBe(false);
20	});
21
22	it('register + saveSelected fires the registered fn', async () => {
23	const fn = jest.fn().mockResolvedValue('ok');
24	registerSaver(fn);
25	expect(hasSaver()).toBe(true);
26	await saveSelected();
27	expect(fn).toHaveBeenCalledTimes(1);
28	expect(fn).toHaveBeenCalledWith({});
29	unregisterSaver(fn);
30	});
31
32	it('saveSelected forwards options through to the saver', async () => {
33	const fn = jest.fn().mockResolvedValue('ok');
34	registerSaver(fn);
35	await saveSelected({ alsoClear: false });
36	expect(fn).toHaveBeenCalledWith({ alsoClear: false });
37	unregisterSaver(fn);
38	});
39
40	it('unregister leaves saveSelected a no-op', async () => {
41	const fn = jest.fn();
42	registerSaver(fn);
43	unregisterSaver(fn);
44	expect(hasSaver()).toBe(false);
45	await saveSelected();
46	expect(fn).not.toHaveBeenCalled();
47	});
48
49	it('agent-submit window event fires the saver with alsoClear: true', () => {
50	const fn = jest.fn();
51	registerSaver(fn);
52	window.dispatchEvent(new CustomEvent(AGENT_SUBMIT_EVENT));
53	expect(fn).toHaveBeenCalledWith({ alsoClear: true });
54	unregisterSaver(fn);
55	});
56
57	// Same-origin trigger surface: the agent-submit listener
58	// must NOT read event.detail. A hostile same-origin script (a second
59	// plugin, a stored-XSS elsewhere) can dispatch this event, but it can only
60	// flush the editor's already-staged content — never inject its own. If the
61	// listener ever forwarded e.detail, an attacker could choose what gets
62	// saved without the user's intent. Dispatch a poisoned payload and assert
63	// the saver still receives exactly { alsoClear: true } and nothing else.
64	it('agent-submit ignores attacker-supplied event detail', () => {
65	const fn = jest.fn();
66	registerSaver(fn);
67	window.dispatchEvent(
68	new CustomEvent(AGENT_SUBMIT_EVENT, {
69	detail: {
70	alsoClear: false,
71	rawBlock: '<img src=x onerror=alert(1)>',
72	source: { kind: 'post', id: 999 },
73	},
74	}),
75	);
76	expect(fn).toHaveBeenCalledTimes(1);
77	const args = fn.mock.calls[0][0];
78	expect(args).toEqual({ alsoClear: true });
79	expect(args).not.toHaveProperty('rawBlock');
80	expect(args).not.toHaveProperty('source');
81	unregisterSaver(fn);
82	});
83
84	it('agent-submit event is a no-op when no saver is registered', () => {
85	expect(() => {
86	window.dispatchEvent(new CustomEvent(AGENT_SUBMIT_EVENT));
87	}).not.toThrow();
88	});
89
90	it('register twice replaces — only the latest saver fires', () => {
91	const first = jest.fn();
92	const second = jest.fn();
93	registerSaver(first);
94	registerSaver(second);
95	window.dispatchEvent(new CustomEvent(AGENT_SUBMIT_EVENT));
96	expect(first).not.toHaveBeenCalled();
97	expect(second).toHaveBeenCalledTimes(1);
98	unregisterSaver(second);
99	});
100
101	it('unregister of a different fn does not clear the active saver', async () => {
102	const active = jest.fn();
103	const ghost = jest.fn();
104	registerSaver(active);
105	unregisterSaver(ghost);
106	expect(hasSaver()).toBe(true);
107	await saveSelected();
108	expect(active).toHaveBeenCalledTimes(1);
109	unregisterSaver(active);
110	});
111	});
112