idlharness.html (1037B)
1 <!doctype html> 2 <title>CSS Anchor Positioning IDL tests</title> 3 <link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#interfaces"> 4 <script src="/resources/testharness.js"></script> 5 <script src="/resources/testharnessreport.js"></script> 6 <script src="/resources/WebIDLParser.js"></script> 7 <script src="/resources/idlharness.js"></script> 8 9 <style> 10 @position-fallback --fallback { 11 @try {} 12 @try {} 13 } 14 </style> 15 16 <script> 17 'use strict'; 18 idl_test( 19 ['css-anchor-position'], 20 ['cssom'], 21 idl_array => { 22 try { 23 self.positionFallback = document.styleSheets[0].cssRules.item(0); 24 self.try1 = self.positionFallback.cssRules.item(0); 25 self.try2 = self.positionFallback.cssRules.item(1); 26 } catch (e) { 27 // Will be surfaced when any rule is undefined below. 28 } 29 30 idl_array.add_objects({ 31 CSSPositionFallbackRule: ['positionFallback'], 32 CSSTryRule: ['try1', 'try2'], 33 CSSStyleDeclaration: ['try1.style', 'try2.style'], 34 }); 35 } 36 ); 37 </script>