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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1079728
+-->
+<head>
+  <title>Test switching between two inputs</title>
+  <script type="application/javascript;version=1.7" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript;version=1.7" src="inputmethod_common.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1079728">Mozilla Bug 1079728</a>
+<p id="display"></p>
+<pre id="test">
+<script class="testbody" type="application/javascript;version=1.7">
+
+inputmethod_setup(function() {
+  runTest();
+});
+
+let appFrameScript = function appFrameScript() {
+  let select1 = content.document.body.firstElementChild;
+  let select2 = content.document.body.children[1];
+
+  let i = 1;
+
+  select1.focus();
+
+  addMessageListener('test:next', function() {
+    i++;
+    switch (i) {
+      case 2:
+        select2.focus();
+        i++; // keep the same count with the parent frame.
+
+        break;
+
+      case 4:
+        select2.blur();
+
+        break;
+
+      case 5:
+        select2.focus();
+
+        break;
+
+      case 6:
+        select1.focus();
+        i++; // keep the same count with the parent frame.
+
+        break;
+
+      case 8:
+        content.document.body.removeChild(select1);
+
+        break;
+
+      case 9:
+        select2.focus();
+
+        break;
+
+      case 10:
+        content.document.body.removeChild(select2);
+
+        break;
+    }
+  });
+};
+
+function runTest() {
+  let im = navigator.mozInputMethod;
+
+  let i = 0;
+  im.oninputcontextchange = function(evt) {
+    var inputcontext = navigator.mozInputMethod.inputcontext;
+
+    i++;
+    switch (i) {
+      // focus on the first input receives the first input context.
+      case 1:
+        ok(!!inputcontext, '1) Receving the first input context');
+        is(inputcontext.textAfterCursor, 'First');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // focus on the second input should implicitly blur the first input
+      case 2:
+        is(inputcontext, null, '2) Receving null inputcontext');
+
+        break;
+
+      // ... and results the second input context.
+      case 3:
+        ok(!!inputcontext, '3) Receving the second input context');
+        is(inputcontext.textAfterCursor, 'Second');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // blur on the second input results null input context
+      case 4:
+        is(inputcontext, null, '4) Receving null inputcontext');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // focus on the second input receives the second input context.
+      case 5:
+        ok(!!inputcontext, '5) Receving the second input context');
+        is(inputcontext.textAfterCursor, 'Second');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // focus on the second input should implicitly blur the first input
+      case 6:
+        is(inputcontext, null, '6) Receving null inputcontext');
+
+        break;
+
+      // ... and results the second input context.
+      case 7:
+        ok(!!inputcontext, '7) Receving the first input context');
+        is(inputcontext.textAfterCursor, 'First');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // remove on the first focused input results null input context
+      case 8:
+        is(inputcontext, null, '8) Receving null inputcontext');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // input context for the second input.
+      case 9:
+        ok(!!inputcontext, '9) Receving the second input context');
+        is(inputcontext.textAfterCursor, 'Second');
+
+        mm.sendAsyncMessage('test:next');
+        break;
+
+      // remove on the second focused input results null input context
+      case 10:
+        is(inputcontext, null, '10) Receving null inputcontext');
+
+        inputmethod_cleanup();
+        break;
+
+      default:
+        ok(false, 'Receving extra inputcontextchange calls');
+        inputmethod_cleanup();
+
+        break;
+    }
+  };
+
+  // Set current page as an input method.
+  SpecialPowers.wrap(im).setActive(true);
+
+  let iframe = document.createElement('iframe');
+  iframe.src = 'file_test_two_selects.html';
+  iframe.setAttribute('mozbrowser', true);
+  document.body.appendChild(iframe);
+
+  let mm = SpecialPowers.getBrowserFrameMessageManager(iframe);
+
+  iframe.addEventListener('mozbrowserloadend', function() {
+    mm.loadFrameScript('data:,(' + encodeURIComponent(appFrameScript.toString()) + ')();', false);
+  });
+}
+
+</script>
+</pre>
+</body>
+</html>
+