| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <style></style> |
| <script> |
| 'use strict'; |
| |
| test(() => { |
| const CSSFilterFunctionNegativeBrightness = 2193; // From web_feature.mojom |
| var style = document.querySelector('style'); |
| style.textContent = "* { filter: brightness(1); }"; |
| assert_false(internals.isUseCounted(document, CSSFilterFunctionNegativeBrightness)); |
| style.textContent = "* { filter: brightness(0); }"; |
| assert_false(internals.isUseCounted(document, CSSFilterFunctionNegativeBrightness)); |
| style.textContent = "* { filter: brightness(-1); }"; |
| assert_true(internals.isUseCounted(document, CSSFilterFunctionNegativeBrightness)); |
| }, "'filter' with negative brightness is use counted."); |
| </script> |
