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<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1334537
-->
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  <meta charset="utf-8">
  <title>Test for Bug 1334537</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <script type="application/javascript">

  /** Test for Bug 1334537 **/
  SimpleTest.waitForExplicitFinish();

  function go() {
    // Need a new global that will pick up our pref.
    var ifr = document.createElement("iframe");
    document.body.appendChild(ifr);

    var t = new ifr.contentWindow.TestFunctions();
    var testString = "abcdefghijklmnopqrstuvwxyz";
    const substringLength = 10;
    var shortTestString = testString.substring(0, substringLength);

    t.setStringData(testString);
    // Note: we want to do all our gets before we start running code we don't
    // control inside the test harness, if we really want to exercise the string
    // cache in controlled ways.

    var asShortDOMString = t.getStringDataAsDOMString(substringLength);
    var asFullDOMString = t.getStringDataAsDOMString();
    var asShortAString = t.getStringDataAsAString(substringLength);
    var asAString = t.getStringDataAsAString();

    is(asShortDOMString, shortTestString, "Short DOMString should be short");
    is(asFullDOMString, testString, "Full DOMString should be test string");
    is(asShortAString, shortTestString, "Short AString should be short");
    is(asAString, testString, "Full AString should be test string");

    // These strings should match the strings used in TestFunctions.cpp, but we
    // want to launder them through something on the JS side that will convert
    // them into strings stored in the JS heap.
    function launder(str) {
      // This should be sufficient, but if the JIT gets too smart we may need
      // to get more clever.
      return str.split("").join("");
    }
    var shortString = launder(t.getShortLiteralString());
    var mediumString = launder(t.getMediumLiteralString());
    var longString = launder(t.getLongLiteralString());

    // A short or medium non-external string will become an inline FakeString.
    is(t.getStringType(shortString), "inline",
       "Short string should become inline");
    is(t.getStringType(mediumString), "inline",
       "Medium string should become inline");
    // A long string will become a stringbuffer FakeString on the way in.
    is(t.getStringType(longString), "stringbuffer",
       "Long string should become a stringbuffer");

    // A short literal string will become an inline JS string on the way out
    // and then become an inline FakeString on the way in.
    is(t.getStringType(t.getShortLiteralString()), "inline",
       "Short literal string should become inline");
    // A medium or long literal string will become an external JS string on the
    // way out and then become a literal FakeString on the way in.
    is(t.getStringType(t.getMediumLiteralString()), "literal",
       "Medium literal string should become literal");
    is(t.getStringType(t.getLongLiteralString()), "literal",
       "Long literal string should become literal");

    // A short stringbuffer string will become an inline JS string on the way
    // out and then become an inline FakeString on the way in.
    is(t.getStringType(t.getStringbufferString(shortString)), "inline",
       "Short stringbuffer string should become inline");
    // A medium or long stringbuffer string will become an external JS string
    // on the way out and then become a stringbuffer FakeString on the way in.
    is(t.getStringType(t.getStringbufferString(mediumString)), "stringbuffer",
       "Medium stringbuffer string should become stringbuffer");
    is(t.getStringType(t.getStringbufferString(longString)), "stringbuffer",
       "Long stringbuffer string should become stringbuffer");

    // Now test that roundtripping works fine.  We need to make sure the string
    // we are storing is not equal to any of the ones we have used above, to
    // avoid the external string cache interfering.
    t.setStringData(longString + "unique");  // Should store with stringbuffer.
    ok(t.stringbufferMatchesStored(t.getStringDataAsAString()),
       "Stringbuffer should have roundtripped");

    SimpleTest.finish();
  }

  addLoadEvent(function() {
    SpecialPowers.pushPrefEnv({set: [["dom.expose_test_interfaces", true]]},
                              go);
  });
  </script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1334537">Mozilla Bug 1334537</a>
<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
</pre>
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