Enterprise Library Test Guide - Willy .Net

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Enterprise Library Test Guide
Design test case Implemented? Feature that implements design
Verify that the design addresses
situations that can
cause exceptions and that
the application block logs the
exceptions through the instrumentation.
Yes
For example, the LogWriter class includes
the InstrumentationProvider property. This
property retrieves the instrumentation provider
that defines the events for the application
block. It logs the events to WMI and to
the event log.
Verify that the instrumentation
is implemented with loosely
coupled events.
Verify that the application
block can use .NET trace
listeners.
Verify that the application
block supports custom property
collections for the custom
trace listeners, custom formatters,
and custom filters.
Yes
Yes
Yes
The methods in the LoggingInstrumentation-
Provider class that raise the events bind to
the methods in the LoggingInstrumentation-
Listener class at run time.
The SystemDiagnosticsTraceListenerData
class configures .NET trace listeners so that
the application block can use them.
The CustomTraceListenerData class supports
custom property collections for custom
trace listeners. Similarly, the CustomFilter-
Data class and the CustomFormatterData
class support custom property collections for
custom filters and custom formatters.
After the code is implemented, you can review it to see if it satisfies its test cases.
Table 4 lists the results of a code review for the Logging Application Block.
Table 4: Logging Application Block Code Verification
Code test case Implemented? Feature that is implemented
Verify that the
Logger façade
exposes all public
members as static
and that it uses
overloads to support
Yes
The Logger.Write method has multiple overloads to log
messages that have different properties. Some of the
overloads are shown in the following code examples.
// writes a message to the category specified
// in the log object
public static void Write(LogEntry log){}
different ways
// writes a log entry to the default category
public static void Write(object message){}
to log information.
// writes a log message to a specific category
public static void Write(object message, string
category){}
// writes a log message to a specific category
// and assigns a priority to the message
public static void Write(object message, string
category, int priority){}