test_bug1414077.html

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<!DOCTYPE html>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1414077

-->

<head>

<meta charset="utf-8">

<title>Test for Bug 1414077</title>

<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>

<script type="application/javascript">

/** Test for Bug 1414077 **/

add_task(async function() {

  await SpecialPowers.pushPrefEnv({"set": [["browser.enable_automatic_image_resizing", true]]});

  return new Promise(resolve => {

    var testWin = document.querySelector("iframe");

    testWin.src = "image.png";

    testWin.onload = function() {

      var testDoc = testWin.contentDocument;

      // testDoc should be a image document.

      ok(testDoc.imageIsOverflowing, "image is overflowing");

      ok(testDoc.imageIsResized, "image is resized to fit visible area by default");

      // Restore image to original size.

      testDoc.restoreImage();

      ok(testDoc.imageIsOverflowing, "image is overflowing");

      ok(!testDoc.imageIsResized, "image is restored to original size");

      // Resize the image to fit visible area

      testDoc.shrinkToFit();

      ok(testDoc.imageIsOverflowing, "image is overflowing");

      ok(testDoc.imageIsResized, "image is resized to fit visible area");

      resolve();

};

})

});

</script>

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1414077">Mozilla Bug 1414077</a>

<iframe width="0" height="0"></iframe>

</body>

</html>