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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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diff --git a/layout/reftests/canvas/ctm-singular-sanity.html b/layout/reftests/canvas/ctm-singular-sanity.html
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+<html>
+<head>
+ <script type="text/javascript">
+
+function assert(cond, msg) { if (!cond) { throw msg; } }
+
+function isSameTM(m1, m2) {
+ // XXX this is probably the ugliest possible way to write this function,
+ // but it's intended to be lowest-common-denominator
+ if (!(m1.length === 6 && m1.length === m2.length)) {
+ return false;
+ }
+ for (var i = 0; i < m1.length; ++i) {
+ if (m1[i] !== m2[i]) {
+ return false;
+ }
+ }
+ return true;
+}
+
+window.onload = function() {
+ var IM = [ 1, 0, 0, 1, 0, 0 ];
+
+ try {
+ var ctx = document.getElementById("c1").getContext("2d");
+
+ var singular = [ 0, 0, 0, 0, 0, 0 ];
+ ctx.mozCurrentTransform = singular;
+ assert(isSameTM(singular, ctx.mozCurrentTransform),
+ "Expected setting CTM to a singular matrix to work");
+ var inv = ctx.mozCurrentTransformInverse;
+ assert(!isSameTM(inv, inv),
+ "Expected to get back matrix of NaN's from currentTransformInverse");
+ ctx.mozCurrentTransform = IM;
+
+ var m = [ 1, 2, 3, 4, 5, 6 ];
+ ctx.mozCurrentTransform = m;
+ ctx.mozCurrentTransformInverse = singular;
+ assert(isSameTM(m, ctx.mozCurrentTransform),
+ "Setting currentTransformInverse to a singular matrix is a no-op");
+ ctx.mozCurrentTransform = IM;
+ } catch (e) {
+ document.body.innerHTML = "FAIL: "+ e.toString();
+ return;
+ }
+ document.body.innerHTML = "Pass";
+}
+ </script>
+</head>
+<body>
+ <div><canvas id="c1" width="300" height="300"></canvas></div>
+</body>
+</html>