<p>Test for 

<a href="https://bugs.webkit.org/show_bug.cgi?id=27514">Bug 27514 - add support for watched expression</a>.

<p>To begin test, open web inspector, go the scripts panel 

(enabling script debugging if necccessary), and then click this link:

<a href="javascript:runTest()">[begin test]</a>.

<p>Perform the following steps, and note the expected results:

<ol>

<li><p>After clicking the link above, you should now be paused in the body of 

the test method, thanks to the <code>debugger</code> statement.

<li><p>Add the following expressions to the "Watch Expressions" section of the

Scripts panel sidebar pane: "<code>this</code>", "<code>a</code>", 

"<code>b</code>", "<code>c</code>" and "<code>d</code>". Do <b>NOT</b> enter the quotes.

<li><p>The values of the expressions as shown in the window should a 

<code>DOMWindow</code> for <code>this</code>, <code>undefined</code> for

the <code>a</code>, <code>b</code>, and <code>c</code> variables, and a 

value of <code>ReferenceError: Can't find variable: d</code>

for the <code>d</code> variable.

<li><p>Note that the value for <code>d</code> should not change for the life of 

the test, as the variable <code>d</code> is never introduced in the program.

<li><p>Step through the code, and you'll see the values of <code>a</code>,

<code>b</code>, and <code>c</code> change, as the variables are assigned.

Also note that as the scope changes due to the function invocation, values

will be changed to refer to their current scope.  The <code>this</code>

expression will change when the method is invoked on the object constructed by

the test.

<li><p>Click different stack frames in the Call Stack section to ensure the

expressions change value appropriately as the current stack frame changes.

<li><p>Drive the debugger through the end of the outermost function, so that

the debugger is no longer in paused state.  The values of 

<code>a</code>, <code>b</code>, and <code>c</code> should all be a

ReferenceError like <code>d</code>, since these variables are defined in the

<code>runTest()</code> function, and the expressions are being evaluated against

the global object.

<li><p>From the console, execute the statement "<code>a = 1</code>".  The

watch expressions do not currently refresh, so the value for <code>a</code>

should still be ReferenceError.

<li><p>Click the "Refresh" button in the Watch Expressions section and the

value for "<code>a</code>" should now be "<code>1</code>".

<li><p>Close down the browser, start it back up, traverse to a web site,

bring up web inspector, go to the Scripts panel.  You should see the same

set of Watch Expressions in the list as you had when you last used web

inspector.

<li><p>Delete an expression by moving the mouse into the Watch Expression

section, and clicking the X icon which appears to the right of an 

expression (on hover).

<li><p>Delete an expression by double-clicking anywhere on a top-level line

of a watch expression, and changing the expression to an empty string or 

nothing but white-space.

<li><p>Modify an entry by double-clicking anywhere on a top-level line

of a watch expression, and changing the expression.

<li><p>Enter a new expression, "<code>new Date()</code>".  The value should be

a toString() version of the date.  Repeatedly press the Refresh button to see

the value updated with the current time.

</ol>

<script>

function runTest() {

    // a nested function

    function subFunction() {

        debugger;

        var a = "a in subFunction()";

        subSubFunction();

        // another nested function

        function subSubFunction() {

            debugger;

            var b = "b in subSubFunction()";

        }

    }

    // a class

    function aClass() {

        this.x = "xxx";

        this.y = "yyy";

    }

    aClass.prototype.aMethod = function() {

        debugger;

        var c = "c in aMethod()";

    }

    // main logic

    debugger;

    var a = "a in runTest()";

    var b = "b in runTest()";

    var c = "c in runTest()";

    subFunction();

    var object = new aClass();

    object.aMethod();

}

</script>