Q.1.4 Make use of a class named EstateAgent that contains methods to calculate estate agent

Question

sales, estate agent commission, and the top-performing estate agent. The EstateAgent
class must implement an IEstateAgent interface that contains the following:
public interface IEstateAgent {
double EstateAgentSales(double[] propertySales);
double EstateAgentCommission(double propertySales);
int TopEstateAgent(double[] totalSales);
}
Q.1.5 You are required to write unit tests for the application. Create a test package within the
application you created, which will contain the necessary unit tests.
You are required to write the following unit tests:
Test Name Test Purpose
CalculateTotalSales_ReturnsTotalSales() To supply the property sales to the
estate agent sales method. The test
will determine that the correct total
sales value is returned from the estate
agent sales method.
CalculateTotalCommission_ReturnsCommission() To supply a total property sales
amount to the estate agent
commission method. The test will
determine that the correct estate
agent commission has been
calculated.
TopAgent_ReturnsTopPosition() To supply total sales for each estate
agent to the top estate agent method.
The test will determine the top selling
total property sales for the estate
agent..include import method..In Java

Answer 1

Here is an example of how the unit tests could be implemented in Java using the JUnit testing framework:

```
import org.junit.Test;
import static org.junit.Assert.*;

public class EstateAgentTests {

@Test
public void CalculateTotalSales_ReturnsTotalSales() {
EstateAgent estateAgent = new EstateAgent();
double[] propertySales = {100000.0, 150000.0, 200000.0};
double expectedTotalSales = 450000.0;

double actualTotalSales = estateAgent.EstateAgentSales(propertySales);

assertEquals(expectedTotalSales, actualTotalSales, 0.001);
}

@Test
public void CalculateTotalCommission_ReturnsCommission() {
EstateAgent estateAgent = new EstateAgent();
double propertySales = 250000.0;
double expectedCommission = 25000.0;

double actualCommission = estateAgent.EstateAgentCommission(propertySales);

assertEquals(expectedCommission, actualCommission, 0.001);
}

@Test
public void TopAgent_ReturnsTopPosition() {
EstateAgent estateAgent = new EstateAgent();
double[] totalSales = {300000.0, 250000.0, 350000.0};
int expectedTopPosition = 2;

int actualTopPosition = estateAgent.TopEstateAgent(totalSales);

assertEquals(expectedTopPosition, actualTopPosition);
}
}
```

Make sure to import the necessary classes and libraries for JUnit testing, and replace `EstateAgent` with the appropriate class name that implements the `IEstateAgent` interface.