Quelle test_flexbox_flex_shorthand.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/layout/style/test/test_flexbox_flex_shorthand.html

<!DOCTYPE HTML>
<html>

<head>
  <meta charset="utf-8">
  <title>Test for Bug 696253</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="property_database.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=696253">Mozilla Bug 696253</a>
<div id="display">
  <div id="content">
  </div>
</div>
<pre id="test">
<script type="application/javascript">
"use strict";

/** Test for Bug 696253 **/
/* (Testing the 'flex' CSS shorthand property) */

// The CSS property name for the shorthand we're testing:
const gFlexPropName = "flex";

// Info from property_database.js on this property:
const gFlexPropInfo = gCSSProperties[gFlexPropName];

// The name of the property in the DOM (i.e. in elem.style):
// (NOTE: In this case it's actually the same as the CSS property name --
// "flex" -- but that's not guaranteed in general.)
const gFlexDOMName = gFlexPropInfo.domProp;

// Default values for shorthand subproperties, when they're not specified
// explicitly in a testcase.  This lets the testcases be more concise.
//
// The values here are from the flexbox spec on the 'flex' shorthand:
//   "When omitted, [flex-grow and flex-shrink are] set to '1'."
//   "When omitted [..., flex-basis's] specified value is '0%'."
let gFlexShorthandDefaults = {
    "flex-grow":   "1",
    "flex-shrink": "1",
    "flex-basis":  "0%"
};

let gFlexShorthandTestcases = [
/*
  {
    "flex":        "SPECIFIED value for flex shorthand",

    // Expected Computed Values of Subproperties
    // Semi-optional -- if unspecified, the expected value is taken
    // from gFlexShorthandDefaults.
    "flex-grow":   "EXPECTED computed value for flex-grow property",
    "flex-shrink": "EXPECTED computed value for flex-shrink property",
    "flex-basis":  "EXPECTED computed value for flex-basis property",
  },
*/

  // Initial values of subproperties:
  // --------------------------------
  // (checked by another test that uses property_database.js, too, but
  // might as well check here, too, for thoroughness).
  {
    "flex":        "",
    "flex-grow":   "0",
    "flex-shrink": "1",
    "flex-basis":  "auto",
  },
  {
    "flex":        "initial",
    "flex-grow":   "0",
    "flex-shrink": "1",
    "flex-basis":  "auto",
  },

  // Special keyword "none" --> "0 0 auto"
  // -------------------------------------
  {
    "flex":        "none",
    "flex-grow":   "0",
    "flex-shrink": "0",
    "flex-basis":  "auto",
  },

  // One Value (numeric) --> sets flex-grow
  // --------------------------------------
  {
    "flex":        "0",
    "flex-grow":   "0",
  },
  {
    "flex":        "5",
    "flex-grow":   "5",
  },
  {
    "flex":        "1000",
    "flex-grow":   "1000",
  },
  {
    "flex":        "0.0000001",
    "flex-grow":   "1e-7"
  },
  {
    "flex":        "20000000",
    "flex-grow":   "20000000",
  },

  // One Value (length or other nonnumeric) --> sets flex-basis
  // ----------------------------------------------------------
  {
    "flex":        "0px",
    "flex-basis":  "0px",
  },
  {
    "flex":        "0%",
    "flex-basis":  "0%",
  },
  {
    "flex":        "25px",
    "flex-basis":  "25px",
  },
  {
    "flex":        "5%",
    "flex-basis":  "5%",
  },
  {
    "flex":        "auto",
    "flex-basis":  "auto",
  },
  {
    "flex":        "fit-content",
    "flex-basis":  "fit-content",
  },
  {
    "flex":        "calc(5px + 6px)",
    "flex-basis":  "11px",
  },
  {
    "flex":        "calc(15% + 30px)",
    "flex-basis":  "calc(15% + 30px)",
  },

  // Two Values (numeric) --> sets flex-grow, flex-shrink
  // ----------------------------------------------------
  {
    "flex":        "0 0",
    "flex-grow":   "0",
    "flex-shrink": "0",
  },
  {
    "flex":        "0 2",
    "flex-grow":   "0",
    "flex-shrink": "2",
  },
  {
    "flex":        "3 0",
    "flex-grow":   "3",
    "flex-shrink": "0",
  },
  {
    "flex":        "0.5000 2.03",
    "flex-grow":   "0.5",
    "flex-shrink": "2.03",
  },
  {
    "flex":        "300.0 500.0",
    "flex-grow":   "300",
    "flex-shrink": "500",
  },

  // Two Values (numeric & length-ish) --> sets flex-grow, flex-basis
  // ----------------------------------------------------------------
  {
    "flex":        "0 0px",
    "flex-grow":   "0",
    "flex-basis":  "0px",
  },
  {
    "flex":        "0 0%",
    "flex-grow":   "0",
    "flex-basis":  "0%",
  },
  {
    "flex":        "10 30px",
    "flex-grow":   "10",
    "flex-basis":  "30px",
  },
  {
    "flex":        "99px 2.3",
    "flex-grow":   "2.3",
    "flex-basis":  "99px",
  },
  {
    "flex":        "99% 6",
    "flex-grow":   "6",
    "flex-basis":  "99%",
  },
  {
    "flex":        "auto 5",
    "flex-grow":   "5",
    "flex-basis":  "auto",
  },
  {
    "flex":        "5 fit-content",
    "flex-grow":   "5",
    "flex-basis":  "fit-content",
  },
  {
    "flex":        "calc(5% + 10px) 3",
    "flex-grow":   "3",
    "flex-basis":  "calc(5% + 10px)",
  },

  // Three Values --> Sets all three subproperties
  // ---------------------------------------------
  {
    "flex":        "0 0 0",
    "flex-grow":   "0",
    "flex-shrink": "0",
    "flex-basis":  "0px",
  },
  {
    "flex":        "0.0 0.00 0px",
    "flex-grow":   "0",
    "flex-shrink": "0",
    "flex-basis":  "0px",
  },
  {
    "flex":        "0% 0 0",
    "flex-grow":   "0",
    "flex-shrink": "0",
    "flex-basis":  "0%",
  },
  {
    "flex":        "10px 3 2",
    "flex-grow":   "3",
    "flex-shrink": "2",
    "flex-basis":  "10px",
  },
];

function runFlexShorthandTest(aFlexShorthandTestcase)
{
  let content = document.getElementById("content");

  let elem = document.createElement("div");

  elem.style[gFlexDOMName] = aFlexShorthandTestcase[gFlexPropName];
  content.appendChild(elem);

  gFlexPropInfo.subproperties.forEach(function(aSubPropName) {
    var expectedVal = aSubPropName in aFlexShorthandTestcase ?
     aFlexShorthandTestcase[aSubPropName] :
     gFlexShorthandDefaults[aSubPropName];

    // Compare computed value against expected computed value (from testcase)
    is(window.getComputedStyle(elem).getPropertyValue(aSubPropName),
       expectedVal,
       "Computed value of subproperty \"" + aSubPropName + "\" when we set \"" +
       gFlexPropName + ": " + aFlexShorthandTestcase[gFlexPropName] + "\"");
  });

  // Clean up
  content.removeChild(elem);
}

function main() {
  gFlexShorthandTestcases.forEach(runFlexShorthandTest);
}

main();

</script>
</pre>
</body>
</html>

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