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<!DOCTYPE html>
<html>

<head>
  <title>@aria-owns attribute testing</title>

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

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

  <script type="application/javascript"
          src="../common.js"></script>
  <script type="application/javascript"
          src="../role.js"></script>
  <script type="application/javascript"
          src="../events.js"></script>

  <script type="application/javascript">

    // //////////////////////////////////////////////////////////////////////////
    // Invokers
    // //////////////////////////////////////////////////////////////////////////

    function changeARIAOwns() {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getNode("t1_button")),
        // no hide for t1_subdiv because it is contained by hidden t1_checkbox
        new invokerChecker(EVENT_HIDE, getNode("t1_checkbox")),
        new invokerChecker(EVENT_SHOW, getNode("t1_checkbox")),
        new invokerChecker(EVENT_SHOW, getNode("t1_button")),
        new invokerChecker(EVENT_SHOW, getNode("t1_subdiv")),
        new invokerChecker(EVENT_REORDER, getNode("t1_container")),
      ];

      this.invoke = function setARIAOwns_invoke() {
        // children are swapped by ARIA owns
        var tree =
          { SECTION: [
              { CHECKBUTTON: [
                { SECTION: [] },
              ] },
              { PUSHBUTTON: [ ] },
          ] };
        testAccessibleTree("t1_container", tree);

        getNode("t1_container").
          setAttribute("aria-owns", "t1_button t1_subdiv");
      };

      this.finalCheck = function setARIAOwns_finalCheck() {
        // children are swapped again, button and subdiv are appended to
        // the children.
        var tree =
          { SECTION: [
              { CHECKBUTTON: [ ] }, // checkbox, native order
              { PUSHBUTTON: [ ] }, // button, rearranged by ARIA own
              { SECTION: [ ] }, // subdiv from the subtree, ARIA owned
          ] };
        testAccessibleTree("t1_container", tree);
      };

      this.getID = function setARIAOwns_getID() {
        return "Change @aria-owns attribute";
      };
    }

    function removeARIAOwns() {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getNode("t1_button")),
        new invokerChecker(EVENT_HIDE, getNode("t1_subdiv")),
        new orderChecker(),
        new asyncInvokerChecker(EVENT_SHOW, getNode("t1_button")),
        new asyncInvokerChecker(EVENT_SHOW, getNode("t1_subdiv")),
        new orderChecker(),
        new invokerChecker(EVENT_REORDER, getNode("t1_container")),
        new unexpectedInvokerChecker(EVENT_REORDER, getNode("t1_checkbox")),
      ];

      this.invoke = function removeARIAOwns_invoke() {
        getNode("t1_container").removeAttribute("aria-owns");
      };

      this.finalCheck = function removeARIAOwns_finalCheck() {
        // children follow the DOM order
        var tree =
          { SECTION: [
              { PUSHBUTTON: [ ] },
              { CHECKBUTTON: [
                  { SECTION: [] },
              ] },
          ] };
        testAccessibleTree("t1_container", tree);
      };

      this.getID = function removeARIAOwns_getID() {
        return "Remove @aria-owns attribute";
      };
    }

    function setARIAOwns() {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getNode("t1_button")),
        new invokerChecker(EVENT_HIDE, getNode("t1_subdiv")),
        new invokerChecker(EVENT_SHOW, getNode("t1_button")),
        new invokerChecker(EVENT_SHOW, getNode("t1_subdiv")),
        new invokerChecker(EVENT_REORDER, getNode("t1_container")),
      ];

      this.invoke = function setARIAOwns_invoke() {
        getNode("t1_container").
          setAttribute("aria-owns", "t1_button t1_subdiv");
      };

      this.finalCheck = function setARIAOwns_finalCheck() {
        // children are swapped again, button and subdiv are appended to
        // the children.
        var tree =
          { SECTION: [
              { CHECKBUTTON: [ ] }, // checkbox
              { PUSHBUTTON: [ ] }, // button, rearranged by ARIA own
              { SECTION: [ ] }, // subdiv from the subtree, ARIA owned
          ] };
        testAccessibleTree("t1_container", tree);
      };

      this.getID = function setARIAOwns_getID() {
        return "Set @aria-owns attribute";
      };
    }

    function addIdToARIAOwns() {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getNode("t1_group")),
        new invokerChecker(EVENT_SHOW, getNode("t1_group")),
        new invokerChecker(EVENT_REORDER, document),
      ];

      this.invoke = function addIdToARIAOwns_invoke() {
        getNode("t1_container").
          setAttribute("aria-owns", "t1_button t1_subdiv t1_group");
      };

      this.finalCheck = function addIdToARIAOwns_finalCheck() {
        // children are swapped again, button and subdiv are appended to
        // the children.
        var tree =
          { SECTION: [
              { CHECKBUTTON: [ ] }, // t1_checkbox
              { PUSHBUTTON: [ ] }, // button, t1_button
              { SECTION: [ ] }, // subdiv from the subtree, t1_subdiv
              { GROUPING: [ ] }, // group from outside, t1_group
          ] };
        testAccessibleTree("t1_container", tree);
      };

      this.getID = function addIdToARIAOwns_getID() {
        return "Add id to @aria-owns attribute value";
      };
    }

    function appendEl() {
      this.eventSeq = [
        new invokerChecker(EVENT_SHOW, getNode, "t1_child3"),
        new invokerChecker(EVENT_REORDER, getNode("t1_container")),
      ];

      this.invoke = function appendEl_invoke() {
        var div = document.createElement("div");
        div.setAttribute("id", "t1_child3");
        div.setAttribute("role", "radio");
        getNode("t1_container").appendChild(div);
      };

      this.finalCheck = function appendEl_finalCheck() {
        // children are invalidated, they includes aria-owns swapped kids and
        // newly inserted child.
        var tree =
          { SECTION: [
              { CHECKBUTTON: [ ] }, // existing explicit, t1_checkbox
              { RADIOBUTTON: [ ] }, // new explicit, t1_child3
              { PUSHBUTTON: [ ] }, // ARIA owned, t1_button
              { SECTION: [ ] }, // ARIA owned, t1_subdiv
              { GROUPING: [ ] }, // ARIA owned, t1_group
          ] };
        testAccessibleTree("t1_container", tree);
      };

      this.getID = function appendEl_getID() {
        return "Append child under @aria-owns element";
      };
    }

    function removeEl() {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getNode("t1_subdiv")),
        new invokerChecker(EVENT_REORDER, getNode("t1_container")),
      ];

      this.invoke = function removeEl_invoke() {
        // remove a container of t1_subdiv
        getNode("t1_span").remove();
      };

      this.finalCheck = function removeEl_finalCheck() {
        // subdiv should go away
        var tree =
          { SECTION: [
              { CHECKBUTTON: [ ] }, // explicit, t1_checkbox
              { RADIOBUTTON: [ ] }, // explicit, t1_child3
              { PUSHBUTTON: [ ] }, // ARIA owned, t1_button
              { GROUPING: [ ] }, // ARIA owned, t1_group
          ] };
        testAccessibleTree("t1_container", tree);
      };

      this.getID = function removeEl_getID() {
        return "Remove a container of ARIA owned element";
      };
    }

    function removeId() {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getNode("t1_group")),
        new invokerChecker(EVENT_SHOW, getNode("t1_group")),
        new invokerChecker(EVENT_REORDER, document),
      ];

      this.invoke = function removeId_invoke() {
        getNode("t1_group").removeAttribute("id");
      };

      this.finalCheck = function removeId_finalCheck() {
        var tree =
          { SECTION: [
              { CHECKBUTTON: [ ] },
              { RADIOBUTTON: [ ] },
              { PUSHBUTTON: [ ] }, // ARIA owned, t1_button
          ] };
        testAccessibleTree("t1_container", tree);
      };

      this.getID = function removeId_getID() {
        return "Remove ID from ARIA owned element";
      };
    }

    function setId() {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getNode("t1_grouptmp")),
        new invokerChecker(EVENT_SHOW, getNode("t1_grouptmp")),
        new invokerChecker(EVENT_REORDER, document),
      ];

      this.invoke = function setId_invoke() {
        getNode("t1_grouptmp").setAttribute("id", "t1_group");
      };

      this.finalCheck = function setId_finalCheck() {
        var tree =
          { SECTION: [
              { CHECKBUTTON: [ ] },
              { RADIOBUTTON: [ ] },
              { PUSHBUTTON: [ ] }, // ARIA owned, t1_button
              { GROUPING: [ ] }, // ARIA owned, t1_group, previously t1_grouptmp
          ] };
        testAccessibleTree("t1_container", tree);
      };

      this.getID = function setId_getID() {
        return "Set ID that is referred by ARIA owns";
      };
    }

    /**
     * Remove an accessible DOM element containing an element referred by
     * ARIA owns.
     */
    function removeA11eteiner() {
      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, getNode("t2_container1")),
      ];

      this.invoke = function removeA11eteiner_invoke() {
        var tree =
          { SECTION: [
              { CHECKBUTTON: [ ] }, // ARIA owned, 't2_owned'
          ] };
        testAccessibleTree("t2_container1", tree);

        getNode("t2_container2").removeChild(getNode("t2_container3"));
      };

      this.finalCheck = function removeA11eteiner_finalCheck() {
        var tree =
          { SECTION: [
          ] };
        testAccessibleTree("t2_container1", tree);
      };

      this.getID = function removeA11eteiner_getID() {
        return "Remove an accessible DOM element containing an element referred by ARIA owns";
      };
    }

    /**
     * Attempt to steal an element from other ARIA owns element. This should
     * not be possible. The only child that will get owned into this
     * container is a previously not aria-owned one.
     */
    function stealFromOtherARIAOwns() {
      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, getNode("t3_container3")),
      ];

      this.invoke = function stealFromOtherARIAOwns_invoke() {
        getNode("t3_container3").setAttribute("aria-owns", "t3_child t3_child2");
      };

      this.finalCheck = function stealFromOtherARIAOwns_finalCheck() {
        var tree =
          { SECTION: [
            { CHECKBUTTON: [
            ] },
          ] };
        testAccessibleTree("t3_container1", tree);

        tree =
          { SECTION: [
          ] };
        testAccessibleTree("t3_container2", tree);

        tree =
          { SECTION: [
            { CHECKBUTTON: [
            ] },
          ] };
        testAccessibleTree("t3_container3", tree);
      };

      this.getID = function stealFromOtherARIAOwns_getID() {
        return "Steal an element from other ARIA owns element";
      };
    }

    function appendElToRecacheChildren() {
      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, getNode("t3_container3")),
      ];

      this.invoke = function appendElToRecacheChildren_invoke() {
        var div = document.createElement("div");
        div.setAttribute("role", "radio");
        getNode("t3_container3").appendChild(div);
      };

      this.finalCheck = function appendElToRecacheChildren_finalCheck() {
        var tree =
          { SECTION: [
          ] };
        testAccessibleTree("t3_container2", tree);

        tree =
          { SECTION: [
            { RADIOBUTTON: [ ] },
            { CHECKBUTTON: [ ] }, // ARIA owned
          ] };
        testAccessibleTree("t3_container3", tree);
      };

      this.getID = function appendElToRecacheChildren_getID() {
        return "Append a child under @aria-owns element to trigger children recache";
      };
    }

    function showHiddenElement() {
      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, getNode("t4_container1")),
      ];

      this.invoke = function showHiddenElement_invoke() {
        var tree =
          { SECTION: [
            { RADIOBUTTON: [] },
          ] };
        testAccessibleTree("t4_container1", tree);

        getNode("t4_child1").style.display = "block";
      };

      this.finalCheck = function showHiddenElement_finalCheck() {
        var tree =
          { SECTION: [
            { CHECKBUTTON: [] },
            { RADIOBUTTON: [] },
          ] };
        testAccessibleTree("t4_container1", tree);
      };

      this.getID = function showHiddenElement_getID() {
        return "Show hidden ARIA owns referred element";
      };
    }

    function rearrangeARIAOwns(aContainer, aAttr, aIdList, aRoleList) {
      this.eventSeq = [];
      for (let id of aIdList) {
        this.eventSeq.push(new invokerChecker(EVENT_HIDE, getNode(id)));
      }

      for (let id of aIdList) {
        this.eventSeq.push(new invokerChecker(EVENT_SHOW, getNode(id)));
      }
      this.eventSeq.push(new invokerChecker(EVENT_REORDER, getNode(aContainer)));

      this.invoke = function rearrangeARIAOwns_invoke() {
        getNode(aContainer).setAttribute("aria-owns", aAttr);
      };

      this.finalCheck = function rearrangeARIAOwns_finalCheck() {
        var tree = { SECTION: [ ] };
        for (var role of aRoleList) {
          var ch = {};
          ch[role] = [];
          tree.SECTION.push(ch);
        }
        testAccessibleTree(aContainer, tree);
      };

      this.getID = function rearrangeARIAOwns_getID() {
        return `Rearrange @aria-owns attribute to '${aAttr}'`;
      };
    }

    function removeNotARIAOwnedEl(aContainer, aChild) {
      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, aContainer),
      ];

      this.invoke = function removeNotARIAOwnedEl_invoke() {
        var tree = {
          SECTION: [
            { TEXT_LEAF: [ ] },
            { GROUPING: [ ] },
          ],
        };
        testAccessibleTree(aContainer, tree);

        getNode(aContainer).removeChild(getNode(aChild));
      };

      this.finalCheck = function removeNotARIAOwnedEl_finalCheck() {
        var tree = {
          SECTION: [
            { GROUPING: [ ] },
          ],
        };
        testAccessibleTree(aContainer, tree);
      };

      this.getID = function removeNotARIAOwnedEl_getID() {
        return `remove not ARIA owned child`;
      };
    }

    function setARIAOwnsOnElToRemove(aParent, aChild) {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getAccessible(aParent)),
      ];

      this.invoke = function setARIAOwnsOnElToRemove_invoke() {
        getNode(aChild).setAttribute("aria-owns", "no_id");
        getNode(aParent).removeChild(getNode(aChild));
        getNode(aParent).remove();
      };

      this.getID = function setARIAOwnsOnElToRemove_getID() {
        return `set ARIA owns on an element, and then remove it, and then remove its parent`;
      };
    }

    /**
     * Set ARIA owns on inaccessible span element that contains
     * accessible children. This will move children from the container for
     * the span.
     */
    function test8() {
      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, "t8_container"),
      ];

      this.invoke = function test8_invoke() {
        var tree =
          { SECTION: [
            { PUSHBUTTON: [] },
            { ENTRY: [] },
            { ENTRY: [] },
            { ENTRY: [] },
          ] };
        testAccessibleTree("t8_container", tree);

        getNode(t8_container).setAttribute("aria-owns", "t8_span t8_button");
      };

      this.finalCheck = function test8_finalCheck() {
        var tree =
          { SECTION: [
            { TEXT: [
              { ENTRY: [] },
              { ENTRY: [] },
              { ENTRY: [] },
            ] },
            { PUSHBUTTON: [] },
          ] };
        testAccessibleTree("t8_container", tree);
      };

      this.getID = function test8_getID() {
        return `Set ARIA owns on inaccessible span element that contains accessible children`;
      };
    }

    function test9_prepare() {
      this.eventSeq = [
        new invokerChecker(EVENT_DOCUMENT_LOAD_COMPLETE, () => {
          return getNode("t9_container").contentDocument;
        }),
      ];

      this.invoke = () => {
        // The \ before the final /script avoids the script from being terminated
        // by the html parser.
        getNode("t9_container").src = `data:text/html,
          <html><body></body>
          <script>
            let el = document.createElement('div');
            el.id = 'container';
            el.innerHTML = "<input id='input'>";
            document.documentElement.appendChild(el);
          <\/script></html>`;
      };

      this.finalCheck = () => {
        var tree =
          { INTERNAL_FRAME: [
            { DOCUMENT: [
              { SECTION: [
                { ENTRY: [] },
              ] },
            ] },
          ] };
        testAccessibleTree("t9_container", tree);
      };

      this.getID = () => {
        return `Set ARIA owns on a document (part1)`;
      };
    }

    function test9_setARIAOwns() {
      this.eventSeq = [
        new invokerChecker(EVENT_SHOW, () => {
          let doc = getNode("t9_container").contentDocument;
          return doc && doc.getElementById("input");
        }),
      ];

      this.invoke = () => {
        let doc = getNode("t9_container").contentDocument;
        doc.body.setAttribute("aria-owns", "input");
      };

      this.finalCheck = () => {
        var tree =
          { INTERNAL_FRAME: [
            { DOCUMENT: [
              { SECTION: [] },
              { ENTRY: [] },
            ] },
          ] };
        testAccessibleTree("t9_container", tree);
      };

      this.getID = () => {
        return `Set ARIA owns on a document (part2)`;
      };
    }

    function test9_finish() {
      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, () => {
          return getNode("t9_container").contentDocument;
        }),
      ];

      this.invoke = () => {
        // trigger a tree update.
        let doc = getNode("t9_container").contentDocument;
        doc.body.appendChild(doc.createElement("p"));
      };

      this.finalCheck = () => {
        var tree =
          { INTERNAL_FRAME: [
            { DOCUMENT: [
              { PARAGRAPH: [] },
              { SECTION: [] },
              { ENTRY: [] },
            ] },
          ] };
        testAccessibleTree("t9_container", tree);
      };

      this.getID = () => {
        return `Set ARIA owns on a document (part3)`;
      };
    }

    /**
     * Put ARIA owned child back when ARIA owner removed.
     */
    function test10_removeARIAOwner() {
      this.eventSeq = [
        new invokerChecker(EVENT_HIDE, getAccessible("t10_owner")),
      ];

      this.invoke = () => {
        let tree =
          { SECTION: [ // t10_container
            { SECTION: [ // t10_owner
              { ENTRY: [] }, // t10_child
            ] },
          ] };
        testAccessibleTree("t10_container", tree);

        getNode("t10_owner").remove();
      };

      this.getID = () => {
        return "Put aria owned child back when aria owner removed";
      };
    }

    function test10_finishTest() {
      this.eventSeq = [
        new invokerChecker(EVENT_REORDER, "t10_container"),
      ];

      this.invoke = () => {
        // trigger a tree update.
        getNode("t10_container").append(document.createElement("p"));
      };

      this.finalCheck = () => {
        let tree =
          { SECTION: [ // t10_container
            { ENTRY: [] }, // t10_child
            { PARAGRAPH: [] },
          ] };
        testAccessibleTree("t10_container", tree);
        todo(false, "Input accessible has be moved back in the tree");
      };

      this.getID = () => {
        return `Put aria owned child back when aria owner removed (finish test)`;
      };
    }

    // //////////////////////////////////////////////////////////////////////////
    // Test
    // //////////////////////////////////////////////////////////////////////////

    // gA11yEventDumpToConsole = true;
    // enableLogging("tree,eventTree,verbose"); // debug stuff

    var gQueue = null;

    async function doTest() {
      let PromEvents = {};
      Services.scriptloader.loadSubScript(
      "chrome://mochitests/content/a11y/accessible/tests/mochitest/promisified-events.js",
      PromEvents);

      gQueue = new eventQueue();
      let queueFinished = new Promise(resolve => {
        gQueue.onFinish = function() {
          resolve();
          return DO_NOT_FINISH_TEST;
        };
      });

      // test1
      gQueue.push(new changeARIAOwns());
      gQueue.push(new removeARIAOwns());
      gQueue.push(new setARIAOwns());
      gQueue.push(new addIdToARIAOwns());
      gQueue.push(new appendEl());
      gQueue.push(new removeEl());
      gQueue.push(new removeId());
      gQueue.push(new setId());

      // test2
      gQueue.push(new removeA11eteiner());

      // test3
      gQueue.push(new stealFromOtherARIAOwns());
      gQueue.push(new appendElToRecacheChildren());

      // test4
      gQueue.push(new showHiddenElement());

      // test5
      gQueue.push(new rearrangeARIAOwns(
        "t5_container", "t5_checkbox t5_radio t5_button",
        [ "t5_checkbox", "t5_radio", "t5_button" ],
        [ "CHECKBUTTON", "RADIOBUTTON", "PUSHBUTTON" ]));
      gQueue.push(new rearrangeARIAOwns(
        "t5_container", "t5_radio t5_button t5_checkbox",
        [ "t5_radio", "t5_button" ],
        [ "RADIOBUTTON", "PUSHBUTTON", "CHECKBUTTON" ]));

      gQueue.push(new removeNotARIAOwnedEl("t6_container", "t6_span"));

      gQueue.push(new setARIAOwnsOnElToRemove("t7_parent", "t7_child"));

      gQueue.push(new test8());
      gQueue.push(new test9_prepare());
      gQueue.push(new test9_setARIAOwns());
      gQueue.push(new test9_finish());

      gQueue.push(new test10_removeARIAOwner());
      gQueue.push(new test10_finishTest());

      gQueue.invoke();
      await queueFinished;

      let owned = document.createElement('div');
      owned.id = 't11_child';
      owned.textContent = 'owned';
      let evtPromise = PromEvents.waitForEvent(EVENT_SHOW, "t11_child");
      getNode("t11_container").append(owned);
      let evt = await evtPromise;
      is(evt.accessible.parent.name, "t11_owner");

      // Test owning an ancestor which isn't created yet.
      testAccessibleTree("t12_container", { SECTION: [ // t12_container
        { SECTION: [ // t12b
          { SECTION: [] }, // t12c
        ] },
        { SECTION: [] }, // t12d
      ] });
      // Owning t12a would create a cycle, so we expect it to do nothing.
      // We own t12d so we get an event when aria-owns relocation is complete.
      evtPromise = PromEvents.waitForEvent(EVENT_SHOW, "t12d");
      getNode("t12c").setAttribute("aria-owns", "t12a t12d");
      await evtPromise;
      testAccessibleTree("t12_container", { SECTION: [ // t12_container
        { SECTION: [ // t12b
          { SECTION: [ // t12c
            { SECTION: [] }, // t12d
          ] },
        ] },
      ] });

      SimpleTest.finish();
    }

    SimpleTest.waitForExplicitFinish();
    addA11yLoadEvent(doTest);

  </script>
</head>

<body>

  <p id="display"></p>
  <div id="content" style="display: none"></div>
  <pre id="test">
  </pre>

  <div id="t1_container" aria-owns="t1_checkbox t1_button">
    <div role="button" id="t1_button"></div>
    <div role="checkbox" id="t1_checkbox">
      <span id="t1_span">
        <div id="t1_subdiv"></div>
      </span>
    </div>
  </div>
  <div id="t1_group" role="group"></div>
  <div id="t1_grouptmp" role="group"></div>

  <div id="t2_container1" aria-owns="t2_owned"></div>
  <div id="t2_container2">
    <div id="t2_container3"><div id="t2_owned" role="checkbox"></div></div>
  </div>

  <div id="t3_container1" aria-owns="t3_child"></div>
  <div id="t3_child" role="checkbox"></div>
  <div id="t3_container2">
    <div id="t3_child2" role="checkbox"></div>
  </div>
  <div id="t3_container3"></div>

  <div id="t4_container1" aria-owns="t4_child1 t4_child2"></div>
  <div id="t4_container2">
    <div id="t4_child1" style="display:none" role="checkbox"></div>
    <div id="t4_child2" role="radio"></div>
  </div>

  <div id="t5_container">
    <div role="button" id="t5_button"></div>
    <div role="checkbox" id="t5_checkbox"></div>
    <div role="radio" id="t5_radio"></div>
  </div>

  <div id="t6_container" aria-owns="t6_fake">
    <span id="t6_span">hey</span>
  </div>
  <div id="t6_fake" role="group"></div>

  <div id="t7_container">
    <div id="t7_parent">
      <div id="t7_child"></div>
    </div>
  </div>

  <div id="t8_container">
    <input id="t8_button" type="button"><span id="t8_span"><input><input><input></span>
  </div>

  <iframe id="t9_container"></iframe>

  <div id="t10_container">
    <div id="t10_owner" aria-owns="t10_child"></div>
    <input id="t10_child">
  </div>

  <div id="t11_container" aria-label="t11_container">
    <div aria-owns="t11_child" aria-label="t11_owner"></div>
  </div>

  <div  id="t12_container">
    <span id="t12a">
      <div id="t12b" aria-owns="t12c"></div>
    </span>
    <div id="t12c"></div>
    <div id="t12d"></div>
  </div>
</body>

</html>