| Test CSSSupportRule. |
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| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". |
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| PASS CSSRule.SUPPORTS_RULE is defined. |
| rules = document.styleSheets[1].cssRules |
| PASS rules.length is 4 |
| PASS rules[0] is an instance of CSSSupportsRule |
| PASS rules[0].type is CSSRule.SUPPORTS_RULE |
| PASS rules[0].cssRules.length is 2 |
| PASS rules[0].cssRules[0].type is CSSRule.STYLE_RULE |
| PASS rules[0].cssRules[1] is an instance of CSSSupportsRule |
| PASS rules[0].cssRules[1].type is CSSRule.SUPPORTS_RULE |
| PASS rules[0].cssRules[1].cssRules.length is 1 |
| PASS rules[0].cssRules[1].cssRules[0].type is CSSRule.STYLE_RULE |
| PASS rules[0].conditionText is "(width: 0)" |
| PASS rules[0].cssText is "@supports (width: 0) {\n s { width: 0px; }\n @supports (width: 1) {\n s { color: rgb(0, 0, 0); }\n}\n}" |
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| Missing argument exceptions. |
| PASS rules[0].insertRule() threw exception TypeError: Failed to execute 'insertRule' on 'CSSGroupingRule': 2 arguments required, but only 0 present.. |
| PASS rules[0].insertRule('@media all {}') threw exception TypeError: Failed to execute 'insertRule' on 'CSSGroupingRule': 2 arguments required, but only 1 present.. |
| PASS rules[0].deleteRule() threw exception TypeError: Failed to execute 'deleteRule' on 'CSSGroupingRule': 1 argument required, but only 0 present.. |
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| Inserting and deleting rules. |
| rules[0].insertRule('@media all { #s { width: 0px; } }', 2) |
| PASS rules[0].cssRules.length is 3 |
| PASS rules[0].cssRules[2].type is CSSRule.MEDIA_RULE |
| rules[0].deleteRule(2) |
| PASS rules[0].cssRules.length is 2 |
| rules[0].cssRules[1].insertRule('@supports (display: rainbow) {}', 1) |
| PASS rules[0].cssRules[1].cssRules.length is 2 |
| PASS rules[0].cssRules[1].cssRules[1] is an instance of CSSSupportsRule |
| PASS rules[0].cssRules[1].cssRules[1].type is CSSRule.SUPPORTS_RULE |
| rules[0].cssRules[1].deleteRule(1) |
| PASS rules[0].cssRules.length is 2 |
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| @charset, @namespace, @import rules are not allowed inside @supports. |
| PASS rules[0].insertRule('@charset "UTF-8"', 2) threw exception SyntaxError: Failed to execute 'insertRule' on 'CSSGroupingRule': the rule '@charset "UTF-8"' is invalid and cannot be parsed.. |
| PASS rules[0].insertRule('@namespace ""', 2) threw exception HierarchyRequestError: Failed to execute 'insertRule' on 'CSSGroupingRule': '@namespace' rules cannot be inserted inside a group rule.. |
| PASS rules[0].insertRule('@import url("../fast/cssom/resources/import.css")', 2) threw exception HierarchyRequestError: Failed to execute 'insertRule' on 'CSSGroupingRule': '@import' rules cannot be inserted inside a group rule.. |
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| Whitespace and formatting should be preserved within the condition, whitespace outside the condition should be trimmed. |
| PASS rules[1].conditionText is "(( ( padding: 0) and (display: none)) or (display: rainbow))" |
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| @supports rule nested inside a media rule. |
| PASS rules[2].type is CSSRule.MEDIA_RULE |
| PASS rules[2].cssRules.length is 1 |
| PASS rules[2].cssRules[0] is an instance of CSSSupportsRule |
| PASS rules[2].cssRules[0].type is CSSRule.SUPPORTS_RULE |
| PASS rules[2].cssRules[0].conditionText is "( padding: 0)" |
| PASS rules[0].cssRules[1].cssRules.length is 1 |
| PASS rules[2].cssRules[0].cssRules[0].type is CSSRule.PAGE_RULE |
| PASS rules[2].cssText is "@media all {\n @supports ( padding: 0) {\n @page :left { top: 0px; }\n}\n}" |
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| No extra parens should be added to the conditionText. |
| PASS rules[3].conditionText is "(border: black) and (padding: 0) and (width: 0)" |
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| Deleting a top-level rule should work correctly. |
| document.styleSheets[1].deleteRule(3) |
| PASS rules.length is 3 |
| PASS rules[0].type is CSSRule.SUPPORTS_RULE |
| PASS rules[0].cssRules.length is 2 |
| PASS rules[0].cssRules[0].type is CSSRule.STYLE_RULE |
| PASS rules[0].cssRules[1].type is CSSRule.SUPPORTS_RULE |
| PASS rules[0].cssRules[1].cssRules.length is 1 |
| PASS rules[0].cssRules[1].cssRules[0].type is CSSRule.STYLE_RULE |
| PASS successfullyParsed is true |
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| TEST COMPLETE |
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