Enterprise Library Test Guide - Willy .Net

Testing for Performance and Scalability 181
Extract);
request1.ThinkTime = 13;
ExtractHiddenFields rule1 = new ExtractHiddenFields();
rule1.ContextParameterName = "1";
request1.ExtractValues += new EventHandler(rule1.
yield return request1;
WebTestRequest request2 = new WebTestRequest("http://localhost/
entlibtests/caching.aspx");
request2.Method = "POST";
FormPostHttpBody request2Body = new FormPostHttpBody();
request2Body.FormPostParameters.Add("__VIEWSTATE", this.
Context["$HIDDEN1.__VIEWSTATE"].ToString());
request2Body.FormPostParameters.Add("TextBox1", this.
Context["DataSource1.cache#csv.cacheitem"].ToString());
request2Body.FormPostParameters.Add("TextBox2", "2000");
request2Body.FormPostParameters.Add("DropDownList1", "0");
request2Body.FormPostParameters.Add("DropDownList3", "DefaultCacheManager");
request2Body.FormPostParameters.Add("DropDownList2", "0");
request2Body.FormPostParameters.Add("Button1", "Add Item");
request2Body.FormPostParameters.Add("__EVENTVALIDATION", this.
Context["$HIDDEN1.__EVENTVALIDATION"].ToString());
request2.Body = request2Body;
yield return request2;
}
}
}
Each test iteration uses a different cache store. If you want to use only one of the
cache stores, remove the other entry from the data source. Data binding is particularly
useful for stress tests, where you want to test all of the scenarios. Bind every Web
control to a data source to create a Web test with full coverage.
Defining the Workload Profile
The workload profile consists of an aggregate mix of users simultaneously performing
various operations. This profile should yield the same results over multiple test
runs. A workload profile consists of an aggregate mix of users simultaneously performing
various operations. To create a workload profile, decide the number of users
you will simulate, how the operations the users perform will be distributed in terms
of percentages, and how much think time you will allow between operations. Think
times simulate behavior that causes people to wait between interactions with a Web
site. They should occur between requests in a Web test and between test iterations in
a load test. Including think times in a load test can be useful in creating more accurate
load simulations. In Visual Studio 2005 Team Edition for Software Testers, think
times are measured in seconds. (The Enterprise Library tests do not use think times
because they do not have to simulate that type of user behavior.)
Create a workload profile when you have to prove that an application block can concurrently
execute a variety of scenarios. The Caching Application Block performance