Add a testcase to an existing testgroup and subgroup
<litmus>
<testgroups>
<testgroup>
<name>1.5 Basic Functional Tests (BFTs)</name>
<product>Firefox</product>
<branch>1.5 Branch</branch>
<subgroups>
<subgroup>
<name>Extensions</name>
<product>Firefox</product>
<testcases>
<testcase>
<name>Verify Top Extension : Adblock</name>
<product>Firefox</product>
<author_email>ccooper@deadsquid.com</author_email>
<details>Background explanatory text (if necessary)</details>
<steps>
<ol>
<li>From the Main menu, open Tools | Extensions. Then click the "Get More Extensions" link.</li>
<li>Navigate through addons.mozilla.org and select the Adblock extension for installation. Click the appropriate "Install" link which points to an .xpi file.</li>
<li>I the dialog titled "Software Installation", click the Install Now button</li>
<li>Restart Firefox</li>
<li>Check to make sure the Adblock works by blocking an advertisement. (context click the ad to discover adblocks menu items)</li>
<li>Reload the page</li>
</ol>
</steps>
<expected_results>Adblock should be installed and active (if it is compatible with this version of Firefox). Adblock should blank the advertisement.</expected_results>
<sort_order>7</sort_order>
<regression_bug_id>300000</regression_bug_id>
<format>manual</format>
</testcase>
</testcases>
</subgroup>
</subgroups>
</testgroup>
</testgroups>
</litmus>