Enterprise Library Test Guide - Willy .Net

90
Enterprise Library Test Guide
Code test case Implemented? Feature that is implemented
Verify that the
application block
responds to runtime
configuration
changes.
Yes
The LogWriterStructureHolderUpdater internal class registers
a handler with the configuration source that will be
notified if its data changes. This is shown in the following
code example.
configurationSource.AddSectionChangeHandler(Logg
ingSettings.SectionName, UpdateLogWriter);
If the configuration source changes at run time, the configuration
source notifies the UpdateLogWriter method.
This method replaces the old object with a new LogWriterStructureHolder
object. This is shown in the following
code example.
public void UpdateLogWriter(…)
{
…
logWriter.ReplaceStructureHolder(newStructureH
older);
}
Verify that the
application block
disposes of the
old LogWriteStructureHolder
object
and creates a
new one when the
configuration information
changes
during run time.
Yes
The UpdateLogWriter method calls the LogWriter.
ReplaceStructureHolder method when the configuration
data changes. This method creates a new LogWriter-
StructureHolder object and disposes of the old one. This
is shown in the following code example.
internal void ReplaceStructureHolder(LogWriterS
tructureHolder newStructureHolder)
{
LogWriterStructureHolder oldStructureHolder =
structureHolder;
structureHolder = newStructureHolder;
Verify that the Logger
façade creates
the LogWriter object
only once and
that it uses the
same object for all
logging requests
that come from the
same application.
Yes
oldStructureHolder.Dispose();
}
The Logger class only creates a Writer object if the
object is currently null and is static. This is shown in the
following code example.
public static LogWriter Writer
{
get
{
if (writer == null)
{
…
writer = factory.Create();
}
}
}