third_party/WebKit/LayoutTests/custom-elements/spec/state-failed-upgrade.html - Issue 2456773002: Clear the custom element's reaction queue if upgrade fails.

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Issue 2456773002: Clear the custom element's reaction queue if upgrade fails. (Closed)

Patch Set: Created 4 years, 1 month ago

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1 <!DOCTYPE html>	1 <!DOCTYPE html>

2 <title>Custom Elements: Custom Element State "Failed" in Upgrades</title>	2 <title>Custom Elements: Custom Element State "Failed" in Upgrades</title>

3 <script src="../../resources/testharness.js"></script>	3 <script src="../../resources/testharness.js"></script>

4 <script src="../../resources/testharnessreport.js"></script>	4 <script src="../../resources/testharnessreport.js"></script>

5 <script src="resources/custom-elements-helpers.js"></script>	5 <script src="resources/custom-elements-helpers.js"></script>

6 <body>	6 <body>

7 <script>	7 <script>

8 'use strict';	8 'use strict';

9	9

10 // Custom Element State	10 // Custom Element State

11 // https://dom.spec.whatwg.org/#concept-element-custom-element-state	11 // https://dom.spec.whatwg.org/#concept-element-custom-element-state

12	12

13 test_with_window(w => {	13 test_with_window(w => {

14 let document = w.document;	14 let document = w.document;

15 let element = document.createElement('a-a');	15 let element = document.createElement('a-a');

	16 let error = new Error('expected');

16	17

17 let constructorCount = 0;	18 let constructorCount = 0;

18 w.customElements.define('a-a', class extends w.HTMLElement {	19 w.customElements.define('a-a', class extends w.HTMLElement {

19 constructor() {	20 constructor() {

20 constructorCount++;	21 constructorCount++;

21 throw new Error();	22 throw error;

22 }	23 }

23 connectedCallback() {	24 connectedCallback() {

24 // TODO(davaajav): remove the failure expectation when this issue is close d

25 // https://github.com/w3c/webcomponents/issues/563

26 assert_unreached('connectedCallback should not be invoked if constructor t hrew');	25 assert_unreached('connectedCallback should not be invoked if constructor t hrew');

27 }	26 }

28 });	27 });

29	28

30 // Upgrade calls the constructor.	29 // Upgrade calls the constructor.

31 // 9. If constructResult is an abrupt completion, then	30 // 9. If constructResult is an abrupt completion, then

32 // Set element's custom element state to "failed".	31 // Set element's custom element state to "failed".

33 // https://html.spec.whatwg.org/multipage/scripting.html#upgrades	32 // https://html.spec.whatwg.org/multipage/scripting.html#upgrades

34 let container = document.body;	33 let container = document.body;

35 container.appendChild(element);	34 assert_reports(w, error, () => container.appendChild(element));

36 assert_equals(constructorCount, 1, 'constructor should be invoked once');	35 assert_equals(constructorCount, 1, 'constructor should be invoked once');

37	36

38 // "failed" is not "defined"	37 // "failed" is not "defined"

39 // https://dom.spec.whatwg.org/#concept-element-defined	38 // https://dom.spec.whatwg.org/#concept-element-defined

40 assert_false(element.matches(':defined'));	39 assert_false(element.matches(':defined'));

41	40

42 // "failed" element should implement HTMLUnknownElement only in "creating an e lement for a token"	41 // "failed" element should implement HTMLUnknownElement only in "creating an e lement for a token"

43 // https://html.spec.whatwg.org/#create-an-element-for-the-token	42 // https://html.spec.whatwg.org/#create-an-element-for-the-token

44 assert_equals(Object.getPrototypeOf(element), w.HTMLElement.prototype);	43 assert_equals(Object.getPrototypeOf(element), w.HTMLElement.prototype);

45	44

46 // 2. If element's custom element state is "failed", then abort these steps.	45 // 2. If element's custom element state is "failed", then abort these steps.

47 // https://html.spec.whatwg.org/multipage/scripting.html#upgrades	46 // https://html.spec.whatwg.org/multipage/scripting.html#upgrades

48 container.appendChild(element);	47 container.appendChild(element);

49 assert_equals(constructorCount, 1, 'constructor should be invoked once');	48 assert_equals(constructorCount, 1, 'constructor should be invoked once');

50 });	49 });

51 </script>	50 </script>

52 </body>	51 </body>

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