added test for getHost
added test for getHost
updated test for getScheme
updated test for getRequestUri
added test for server widget
updated test for AbstractWidget, fixed ServerTest name error
added exception test for cache widget
added missing fixture class
removed getStmt method, added test for getDbh, getDriver
added TODO for dbCache widget
removed initWidget configuration, moved validator manager instance to validator test case
fixed validator manager not instance issue