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This will give you a better understanding of how you should approach defining your test cases and related unit tests For example, you can see that from this use case users might execute a number of searches for an invoice prior to finding the one for which they are looking For this reason, you might create a unit test for finding invoices and then decide to bind this unit test to a series of data that represents a number of search combinations In addition, you will want to write test cases that define searching for invoices and then processing them according to this use case We will look at writing the test cases in a moment..

Practice 1: Install the HTML remote administration tools on a Windows Server 2003 member server and use the tools to change the server name. Practice 2: Log on to a remote Windows Server 2003 system using Terminal Services Remote Desktop for Administration mode. Practice 1: Create two shared printers that point to the same physical print device. Set the priority on one shared printer to 99 and the priority on the second shared printer to 1. Submit five print jobs to each and determine which shared printer completes its jobs first. Practice 2: Send several print jobs to a printer. Pause one print job and rearrange the priority of the others to see how the order in which the jobs are printed changes.

particular user. These are called user preferences in Microsoft parlance because they reserve the term settings as application-level values. The most common situation for using user preferences is when the application wants to capture its state (for example, form size and location, most recently opened files, toolbar settings) at the time of closing so that the state can be reset when the application is next launched. This is the sort of thoughtfulness that makes an application successful with users. The System.Configuration namespace provides the capability for both retrieving and, more important, saving configurations at a user level. This is the functional equivalent of giving each user his or her own configuration file. Specifically, each user gets a file called user.config where user is the Windows logon ID. And, unlike the application configuration file, user configuration files are stored in the user s Application Data directory. By default, the full location is:

_roles = new string[roles.Length]; roles.CopyTo(_roles, 0); Array.Sort(_roles); } public IIdentity Identity { get { return _identity; } } public bool IsInRole(string role) { return Array.BinarySearch(_roles, role) >= 0 true : false; } }

<Image IsManipulationEnabled="True" ManipulationDelta="Image_ManipulationDelta" x:Name="TheImage" > </Image>

Examining the Security Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33

The second phase in the process has two possible paths. If all the transaction managers return a Success message, the transaction coordinator sends out a Commit request to all the transaction managers. Upon receipt of this message, the transaction manager performs a commit on the updates and returns an acknowledgement to the coordinator. When the coordinator has received all the acknowledgements, the transaction is considered complete. The second possible path occurs if any of the transaction managers returned a Failure message in the Prepare phase. A single failure means that all the updates should be rolled back, so the transaction coordinator sends out an Abort request to the transaction managers. The managers perform a rollback of the updates under their control and send an acknowledgement to the coordinator. This is the basic flow through the two-phase commit process. Naturally, there are a number of other options. For example, the Prepare phase will have a timeout so that if no response is received from one of the transaction managers after a period of time, the transaction will be aborted. The same would happen if a transaction manager didn t receive a commit or abort message within a reasonable time frame. Also, from a responsiveness perspective, the entire

Managing and Maintaining a Server Environment (4.0)

Table 7-3

Lesson Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33

8

queue.Send(msg, MessageQueueTransactionType.Single);