Exam 70-486 topic 1 question 96 discussion

HOTSPOT -
You are building an ASP.NET application. You develop the following unit test code. Line numbers are included for reference only.
01 [TestClass]
02 public class UnitTest1
03 {
04 protected string _name;
05 protected float _expenses;
06 protected float _income;
07 protected float _payment;
08 protected float _balance;
09 public void AddCustomer(string name, float income, float payment, float balance)
10 {
11 _name = name;
12 _expenses = expenses;
13 _income = income;
14 _payment = payment;
15 _balance = balance;
16 CheckName();
17 DebRatio();
18 CheckBalance();
19 }
20 [TestMethod]
21 public void CheckName()
22 {
23 Assert.IsNotNull(_name, "CheckName failed unit test");
24 }
25 [TestMethod]
26 public void DebRatio()
27 {
28 Assert.AreSame(_income, _payment, "DebRatio failed unit test");
29 }
30 [TestMethod]
31 public void CheckBalance()
32 {
33 Assert.IsTrue(_balance >= 0.0f, Check balance failed unit test.");
34 }
35}
You run the following line of code:
AddCustomer("Contoso", 0, 100, 100, -1);
You need to evaluate the unit test results. For each of the following statements, select Yes if the statement is true. Otherwise, select No.
Hot Area:

Suggested Answer:
Box 1: Yes -
Line 23 is Assert.IsNotNull(_name, "CheckName failed unit test");
_name is "Contoso" so the assertion will succeed.

Box 2: No -
Line 289 is Assert.AreSame(_income, _payment, "DebRatio failed unit test");
_income is 0 and payment is 100. The assertion will fail.

Box 3: No -
Line 33 is Assert.IsTrue(_balance >= 0.0f, Check balance failed unit test.");
_balance is -1. The assertion will fail.