third_party/WebKit/LayoutTests/custom-elements/spec/state-failed-upgrade.html - Issue 2313573002: Custom Elements: add prototype check for "failed" elements

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Issue 2313573002: Custom Elements: add prototype check for "failed" elements (Closed)

Patch Set: template.html clean up Created 4 years, 3 months 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	16

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

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

19 constructor() {	19 constructor() {

20 constructorCount++;	20 constructorCount++;

21 throw new Error();	21 throw new Error();

22 }	22 }

23 connectedCallback() {	23 connectedCallback() {

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

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

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

25 }	27 }

26 });	28 });

27	29

28 // Upgrade calls the constructor.	30 // Upgrade calls the constructor.

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

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

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

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

33 container.appendChild(element);	35 container.appendChild(element);

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

35	37

36 // "failed" is not "defined"	38 // "failed" is not "defined"

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

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

	41

	42 // "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

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

	45

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

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

	48 container.appendChild(element);

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

39 });	50 });

40 </script>	51 </script>

41 </body>	52 </body>

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