gradient-interpolation-method-invalid.html (3748B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title>CSS Images Module Level 4: parsing invalid gradients with color interpolation methods</title> 6 <link rel="author" title="Sam Weinig" href="mailto:weinig@apple.com"> 7 <link rel="author" title="CGQAQ" href="mailto:m.jason.liu@gmail.com"> 8 <link rel="help" href="https://drafts.csswg.org/css-images-4/#gradients"> 9 <link rel="help" href="https://drafts.csswg.org/css-color-4/#color-interpolation-method"> 10 <meta name="assert" content="gradients supports the addition of color-interpolation-method to the grammar"> 11 <script src="/resources/testharness.js"></script> 12 <script src="/resources/testharnessreport.js"></script> 13 <script src="/css/support/parsing-testcommon.js"></script> 14 </head> 15 <body> 16 <script> 17 18 function test_each_interpolation_method(gradientFunction) { 19 test_invalid_value(`background-image`, `${gradientFunction}(, red, blue)`) 20 21 for (const colorSpace of [ "lab", "oklab", "srgb", "srgb-linear", "xyz", "xyz-d50", "xyz-d65" ]) { 22 const colorInterpolationMethod = colorSpace 23 24 test_invalid_value(`background-image`, `${gradientFunction}(red, blue, ${colorInterpolationMethod})`) // interpolation method after color stops 25 test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} ${colorSpace}, red, blue)`) // duplicated color space 26 test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} shorter hue, red, blue)`) // invalid color space for hue modifier 27 } 28 29 for (const colorSpace of [ "hsl", "hwb", "lch", "oklch" ]) { 30 test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} foo hue, red, blue)`) // invalid hue method 31 test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} hue, red, blue)`) // missing interpolation method 32 test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} ${colorSpace}, red, blue)`) // duplicated color space 33 34 for (const hueInterpolationMethod of [ "shorter", "longer", "increasing", "decreasing", "specified" ]) { 35 test_invalid_value(`background-image`, `${gradientFunction}(${colorSpace} ${hueInterpolationMethod}, red, blue)`) // missing 'hue' keyword 36 test_invalid_value(`background-image`, `${gradientFunction}(${hueInterpolationMethod} hue ${colorSpace}, red, blue)`) // hue method before color space 37 test_invalid_value(`background-image`, `${gradientFunction}(red, blue, ${colorSpace} ${hueInterpolationMethod} hue)`) // interpolation method after color stops 38 } 39 } 40 } 41 42 test_each_interpolation_method("linear-gradient") 43 test_each_interpolation_method("radial-gradient") 44 test_each_interpolation_method("conic-gradient") 45 46 // lacking of color-space after `in` 47 test_invalid_value(`background-image`, `linear-gradient(in, black, transparent)`) 48 test_invalid_value(`background-image`, `linear-gradient(45deg in, black, transparent)`) 49 test_invalid_value(`background-image`, `linear-gradient(in 45deg, black, transparent)`) 50 test_invalid_value(`background-image`, `linear-gradient(in to right, black, transparent)`) 51 test_invalid_value(`background-image`, `radial-gradient(closest-side in, black, transparent)`) 52 test_invalid_value(`background-image`, `conic-gradient(in from 90deg, black, transparent)`) 53 // lacking of `hue` keyword 54 test_invalid_value(`background-image`, `linear-gradient(90deg in hsl longer, black, transparent)`) 55 test_invalid_value(`background-image`, `linear-gradient(90deg in hsl shorter, black)`) 56 test_invalid_value(`background-image`, `linear-gradient(to right in hsl increasing, black, transparent)`) 57 test_invalid_value(`background-image`, `linear-gradient(to right in hsl decreasing, black, transparent)`) 58 </script> 59 </body> 60 </html>