You create Microsoft Windows-based applications. You review code for an application that is developed for a bank. You need to test a method named Deposit in one of the application components. The following code segment represents the Deposit method. (Line numbers are included for reference only.)

01 public void Deposit(decimal amount) {
03 if (!(amount > 0)) {
04 throw new Exception(“Invalid deposit amount!”);
05 } else {
06 this.balance += amount;
07 }
08 }

You use the Microsoft Visual Studio 2005 test feature to automatically generate the following unit test.
(Line numbers are included for reference only.)

01 [TestMethod()]
02 public void DepositTest() {
03 BankAccount target = new BankAccount(); //balance will be ZERO
04 decimal amount = 100;
05 target.Deposit(amount);
06 Assert.Inconclusive(“A method that does not return a value cannot be verified.”);
07 }

You need to change the test method to return a conclusive result.
Which line of code should you use to replace the code on line 06?

You create Microsoft Windows-based applications. You are designing integration tests for an application that your team is developing. Your team uses an application framework that is developed in-house.

The application consumes the following elements:

Third-party Web services
A third-party API for sending text messages to mobile phones Components from the application framework to access SQL Server databases and e-mail messages Managed code to access flat files in the file system

You need to create a report that lists the components that must be considered for integration testing.
Which two components should you include? (Each correct answer presents part of the solution. Choose two.)

You create Microsoft Windows-based applications.

You receive the following code segment to review. (Line numbers are included for reference only.)

01 public partial class frmReceivables : Form
02 {
03 private DataSet ds;
04 public frmReceivables()
05 {
06 InitializeComponent();
07 }
08 private void frmReceivables(object sender, EventArgs e)
09 {
10 SqlConnection cn = new SqlConnection(strConnectionString);
11 SqlDataAdapter daInvoices = new SqlDataAdapter(“SELECT * FROM Invoices”, cn);
12 SqlDataAdapter daCustomers = new SqlDataAdapter(“SELECT * FROM Customers”, cn);
13 ds = new DataSet(“Receivables”);
14 daInvoices.Fill(ds);
15 daCustomers.Fill(ds);
16 }
17 }

The strConnectionString variable is pre-populated from the application configuration file. Query statements will remain unchanged throughout the life cycle of the application. Connection pooling is not being used. This code segment accesses a Microsoft SQL Server 2000 database. The ds dataset is bound to a data grid view so that users can view and update data in the database. The code currently compiles correctly and works as intended. You need to enhance performance and reliability for this code.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

You are creating a Windows Forms application that includes the database
helper methods UpdateOrder and UpdateAccount. Each method wraps code that connects to a Microsoft SQL Server 2005 database, executes a Transact-SQL statement, and then disconnects from the database. You must ensure that changes to the database that result from the UpdateAccount method are committed only if the UpdateOrder method succeeds. You need to execute the UpdateAccount method and the UpdateOrder method.
Which code segment should you use?