| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>CSS Images Module Level 4: parsing invalid gradients with color interpolation methods</title> |
| <link rel="author" title="Sam Weinig" href="mailto:weinig@apple.com"> |
| <link rel="author" title="CGQAQ" href="mailto:m.jason.liu@gmail.com"> |
| <link rel="help" href="https://drafts.csswg.org/css-images-4/#gradients"> |
| <link rel="help" href="https://drafts.csswg.org/css-color-4/#color-interpolation-method"> |
| <meta name="assert" content="gradients supports the addition of color-interpolation-method to the grammar"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/support/parsing-testcommon.js"></script> |
| </head> |
| <body> |
| <script> |
| |
| function test_each_interpolation_method(gradientFunction) { |
| test_invalid_value(`background-image`, `${gradientFunction}(, red, blue)`) |
| |
| for (const colorSpace of [ "lab", "oklab", "srgb", "srgb-linear", "xyz", "xyz-d50", "xyz-d65" ]) { |
| const colorInterpolationMethod = colorSpace |
| |
| test_invalid_value(`background-image`, `${gradientFunction}(red, blue, ${colorInterpolationMethod})`) // interpolation method after color stops |
| test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} ${colorSpace}, red, blue)`) // duplicated color space |
| test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} shorter hue, red, blue)`) // invalid color space for hue modifier |
| } |
| |
| for (const colorSpace of [ "hsl", "hwb", "lch", "oklch" ]) { |
| test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} foo hue, red, blue)`) // invalid hue method |
| test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} hue, red, blue)`) // missing interpolation method |
| test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} ${colorSpace}, red, blue)`) // duplicated color space |
| |
| for (const hueInterpolationMethod of [ "shorter", "longer", "increasing", "decreasing", "specified" ]) { |
| test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} ${hueInterpolationMethod}, red, blue)`) // missing 'hue' keyword |
| test_invalid_value(`background-image`, `${gradientFunction}(${hueInterpolationMethod} hue ${colorSpace}, red, blue)`) // hue method before color space |
| test_invalid_value(`background-image`, `${gradientFunction}(red, blue, ${colorSpace} ${hueInterpolationMethod} hue)`) // interpolation method after color stops |
| } |
| } |
| } |
| |
| test_each_interpolation_method("linear-gradient") |
| test_each_interpolation_method("radial-gradient") |
| test_each_interpolation_method("conic-gradient") |
| |
| // lacking of color-space after `in` |
| test_invalid_value(`background-image`, `linear-gradient(in, black, transparent)`) |
| test_invalid_value(`background-image`, `linear-gradient(45deg in, black, transparent)`) |
| test_invalid_value(`background-image`, `linear-gradient(in 45deg, black, transparent)`) |
| test_invalid_value(`background-image`, `linear-gradient(in to right, black, transparent)`) |
| test_invalid_value(`background-image`, `radial-gradient(closest-side in, black, transparent)`) |
| test_invalid_value(`background-image`, `conic-gradient(in from 90deg, black, transparent)`) |
| // lacking of `hue` keyword |
| test_invalid_value(`background-image`, `linear-gradient(90deg in hsl longer, black, transparent)`) |
| test_invalid_value(`background-image`, `linear-gradient(90deg in hsl shorter, black)`) |
| test_invalid_value(`background-image`, `linear-gradient(to right in hsl increasing, black, transparent)`) |
| test_invalid_value(`background-image`, `linear-gradient(to right in hsl decreasing, black, transparent)`) |
| </script> |
| </body> |
| </html> |
