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-rw-r--r-- | devtools/server/tests/chrome/test_css-logic-specificity.html | 84 |
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diff --git a/devtools/server/tests/chrome/test_css-logic-specificity.html b/devtools/server/tests/chrome/test_css-logic-specificity.html new file mode 100644 index 0000000000..b5d5c76c0c --- /dev/null +++ b/devtools/server/tests/chrome/test_css-logic-specificity.html @@ -0,0 +1,84 @@ +<!DOCTYPE HTML> +<html> +<!-- +Test that css-logic calculates CSS specificity properly +--> +<meta charset="utf-8"> +<title>Test css-logic specificity</title> +<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script> +<body style="background:blue;"> +<script> + "use strict"; + + window.onload = function() { + const {require} = ChromeUtils.importESModule("resource://devtools/shared/loader/Loader.sys.mjs"); + const {CssLogic, CssSelector} = require("devtools/server/actors/inspector/css-logic"); + + const TEST_DATA = [ + {text: "*", expected: 0}, + {text: "LI", expected: 1}, + {text: "UL LI", expected: 2}, + {text: "UL OL + LI", expected: 3}, + {text: "H1 + [REL=\"up\"]", expected: 1025}, + {text: "UL OL LI.red", expected: 1027}, + {text: "LI.red.level", expected: 2049}, + {text: ".red .level", expected: 2048}, + {text: "#x34y", expected: 1048576}, + {text: "#s12:not(FOO)", expected: 1048577}, + {text: "body#home div#warning p.message", expected: 2098179}, + {text: "* body#home div#warning p.message", expected: 2098179}, + {text: "#footer :not(nav) li", expected: 1048578}, + {text: "bar:nth-child(n)", expected: 1025}, + {text: "li::marker", expected: 2}, + {text: "a:hover", expected: 1025}, + ]; + + function createDocument() { + let text = TEST_DATA.map(i=>i.text).join(","); + text = '<style>' + text + " {color:red;}</style>"; + document.body.innerHTML = text; + } + + function getExpectedSpecificity(selectorText) { + return TEST_DATA.filter(i => i.text === selectorText)[0].expected; + } + + SimpleTest.waitForExplicitFinish(); + + createDocument(); + const cssLogic = new CssLogic(); + + cssLogic.highlight(document.body); + + // There could be more stylesheets due to e.g, accessiblecaret, so find the + // right one. + info(`Sheets: ${cssLogic.sheets.map(s => s.href).join(", ")}`); + + const cssSheet = cssLogic.sheets.find(s => s.href == location.href); + const cssRule = cssSheet.domSheet.cssRules[0]; + const selectors = CssLogic.getSelectors(cssRule); + + is(selectors.length, TEST_DATA.length, "Should be the right rule"); + + info("Iterating over the test selectors: " + selectors.join(", ")); + for (let i = 0; i < selectors.length; i++) { + const selectorText = selectors[i]; + info("Testing selector " + selectorText); + + const selector = new CssSelector(cssRule, selectorText, i); + const expected = getExpectedSpecificity(selectorText); + const specificity = selector.cssRule.selectorSpecificityAt(selector.selectorIndex); + is(specificity, expected, + 'Selector "' + selectorText + '" has a specificity of ' + expected); + } + + info("Testing specificity of element.style"); + const colorProp = cssLogic.getPropertyInfo("background"); + is(colorProp.matchedSelectors[0].specificity, 0x40000000, + "Element styles have specificity of 0x40000000 (1073741824)."); + + SimpleTest.finish(); + }; + </script> +</body> +</html> |