Enterprise Library Test Guide - Willy .Net

Testing the Logging Application Block 97
Test cases Result Automated test
Verify that custom
classes can be added
to the application
block and configured
from information in
the configuration
source.
Passed In this example, the CustomRegistryListener custom trace
listener derives from the CustomTraceListener class. The
Enterprise Library Core uses information in the configuration
source to add the custom class to the application
block. The test verifies that the custom trace listener logs
the registry data to the registry path that is specified in the
configuration file.
The following code defines the CustomRegistryListener
class.
CustomRegistryListener class
[ConfigurationElementType(typeof(CustomTraceListe
nerData))]
public class CustomRegistryListener: Custom-
TraceListener
{
public
CustomRegistryListener():base(){}
public CustomRegistryListener(string initialize-
Data): base(){}
public override void TraceData(…)
{
…write it to registry
}
public override void Write(){…}
public override void WriteLine(string message){…}
The following is the information in the configuration file.
The following is the test.
[TestMethod]
public void LogToRegistryListener()
{
LogEntry log = new LogEntry();
log.Message = "To test CustomTrace Listener that
derives from CustomTraceListener";
log.Title= "LogToRegistryListener";
log.Categories.Add("RegistryCategory");
Logger.Write(log);
RegistryKey key = Registry.LocalMachine.
OpenSubKey(@"Software\EntlibTestApp");
string content = (string) key.
GetValue("LogEntry");
key.Close();
Assert.IsTrue(content.Contains(log.Message));
}
continued