calc-background-position-003.html (2423B)
1 <!DOCTYPE html> 2 3 <meta charset="UTF-8"> 4 5 <title>CSS Values and Units Test: serialization of 'background-position' when specified with calc() function</title> 6 7 <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> 8 <link rel="help" href="https://www.w3.org/TR/css-values-4/#calc-serialize"> 9 10 <meta content="This test verifies how 6 calc() functions are serialized for 'background-position'." name="assert"> 11 12 <script src="/resources/testharness.js"></script> 13 14 <script src="/resources/testharnessreport.js"></script> 15 16 <div id="target"></div> 17 18 <script> 19 function startTesting() 20 { 21 22 var targetElement = document.getElementById("target"); 23 24 function verifySerialization(specified_value, serialization_expected, description) 25 { 26 27 test(function() 28 { 29 30 targetElement.style.backgroundPosition = specified_value; 31 32 assert_equals(targetElement.style.backgroundPosition, serialization_expected); 33 34 }, description); 35 } 36 37 /* 38 verifySerialization(specified_value, serialization_expected, description) 39 */ 40 41 verifySerialization("calc(2px + 3px) calc(4px + 5px)", "calc(5px) calc(9px)", "testing background-position: calc(2px + 3px) calc(4px + 5px)"); 42 43 verifySerialization("calc(18px - 7px) calc(19px - 7px)", "calc(11px) calc(12px)", "testing background-position: calc(18px - 7px) calc(19px - 7px)"); 44 45 verifySerialization("calc(4 * 5px) calc(6px * 4)", "calc(20px) calc(24px)", "testing background-position: calc(4 * 5px) calc(6px * 4)"); 46 47 verifySerialization("calc(100px / 4) calc(119px / 7)", "calc(25px) calc(17px)", "testing background-position: calc(100px / 4) calc(119px / 7)"); 48 49 /* 50 verifySerialization(specified_value, serialization_expected, description) 51 */ 52 53 verifySerialization("calc(6px + 21%) calc(7em + 22%)", "calc(21% + 6px) calc(22% + 7em)", "testing background-position: calc(6px + 21%) calc(7em + 22%)"); 54 55 verifySerialization("calc(-8px + 23%) calc(-9em + 24%)", "calc(23% - 8px) calc(24% - 9em)", "testing background-position: calc(-8px + 23%) calc(-9em + 24%)"); 56 57 /* 58 59 " 60 Sort the terms in the following order: 61 62 The number, if present 63 64 The percentage, if present 65 66 The dimensions, ordered by their units ASCII case-insensitive alphabetically 67 " 68 https://www.w3.org/TR/css-values-4/#math-function-serialize-a-summation 69 70 */ 71 72 } 73 74 startTesting(); 75 76 </script>