Test closure activities are done when software is delivered. The testing can be closed for other reasons also like:
When all the information has been gathered which is needed for the testing.
When a project is canceled.
When some target is achieved.
When a maintenance release or update is done.
Test closure activities have the following major tasks:
i. To check which planned deliverables are actually delivered and to ensure that all incident reports have been resolved.
ii. To finalize and archive testware such as scripts, test environments, etc. for later reuse.
iii. To hand over the testware to the maintenance organization. They will give support to the software.
iv To evaluate how the testing went and learn lessons for future releases and projects.