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+<!DOCTYPE HTML>
+<html>
+<!--
+-->
+<head>
+ <title>ArrayBuffer stream test</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+
+<script type="text/javascript">
+function detachArrayBuffer(ab)
+{
+ var w = new Worker("data:application/javascript,");
+ w.postMessage(ab, [ab]);
+}
+
+function test()
+{
+ var ab = new ArrayBuffer(4000);
+ var ta = new Uint8Array(ab);
+ ta[0] = 'a'.charCodeAt(0);
+ ta[1] = 'b'.charCodeAt(0);
+
+ const Cc = SpecialPowers.Cc, Ci = SpecialPowers.Ci;
+ var abis = Cc["@mozilla.org/io/arraybuffer-input-stream;1"]
+ .createInstance(Ci.nsIArrayBufferInputStream);
+
+ var sis = Cc["@mozilla.org/scriptableinputstream;1"]
+ .createInstance(Ci.nsIScriptableInputStream);
+ sis.init(abis);
+
+ is(sis.read(1), "", "should read no data from an uninitialized ABIS");
+
+ abis.setData(ab, 0, 256 * 1024);
+
+ is(sis.read(1), "a", "should read 'a' after init");
+
+ detachArrayBuffer(ab);
+
+ SpecialPowers.forceGC();
+ SpecialPowers.forceGC();
+
+ try
+ {
+ is(sis.read(1), "b", "should read 'b' after detaching buffer");
+ }
+ catch (e)
+ {
+ ok(false, "reading from stream should have worked");
+ }
+
+ // A regression test for bug 1265076. Previously, overflowing
+ // the internal buffer from readSegments would cause incorrect
+ // copying. The constant mirrors the value in
+ // ArrayBufferInputStream::readSegments.
+ var size = 8192;
+ ab = new ArrayBuffer(2 * size);
+ ta = new Uint8Array(ab);
+
+ var i;
+ for (i = 0; i < size; ++i) {
+ ta[i] = 'x'.charCodeAt(0);
+ }
+ for (i = 0; i < size; ++i) {
+ ta[size + i] = 'y'.charCodeAt(0);
+ }
+
+ abis = Cc["@mozilla.org/io/arraybuffer-input-stream;1"]
+ .createInstance(Ci.nsIArrayBufferInputStream);
+ abis.setData(ab, 0, 2 * size);
+
+ sis = Cc["@mozilla.org/scriptableinputstream;1"]
+ .createInstance(Ci.nsIScriptableInputStream);
+ sis.init(abis);
+
+ var result = sis.read(2 * size);
+ is(result, "x".repeat(size) + "y".repeat(size), "correctly read the data");
+}
+
+test();
+</script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test">
+</pre>
+</body>
+</html>