Mockito-첫 번째 응용 프로그램

Mockito 프레임 워크의 세부 사항으로 들어가기 전에 애플리케이션이 작동하는지 살펴 보겠습니다. 이 예제에서는 일부 주식의 더미 가격을 가져 오기 위해 Stock Service의 모의를 만들고 Portfolio라는 Java 클래스를 단위 테스트했습니다.

프로세스는 아래에서 단계별로 설명합니다.

Step 1 − Create a JAVA class to represent the Stock

File: Stock.java

public class Stock {
   private String stockId;
   private String name;	
   private int quantity;

   public Stock(String stockId, String name, int quantity){
      this.stockId = stockId;
      this.name = name;		
      this.quantity = quantity;		
   }

   public String getStockId() {
      return stockId;
   }

   public void setStockId(String stockId) {
      this.stockId = stockId;
   }

   public int getQuantity() {
      return quantity;
   }

   public String getTicker() {
      return name;
   }
}

Step 2 − Create an interface StockService to get the price of a stock

File: StockService.java

public interface StockService {
   public double getPrice(Stock stock);
}

Step 3 − Create a class Portfolio to represent the portfolio of any client

File: Portfolio.java

import java.util.List;

public class Portfolio {
   private StockService stockService;
   private List<Stock> stocks;

   public StockService getStockService() {
      return stockService;
   }
   
   public void setStockService(StockService stockService) {
      this.stockService = stockService;
   }

   public List<Stock> getStocks() {
      return stocks;
   }

   public void setStocks(List<Stock> stocks) {
      this.stocks = stocks;
   }

   public double getMarketValue(){
      double marketValue = 0.0;
      
      for(Stock stock:stocks){
         marketValue += stockService.getPrice(stock) * stock.getQuantity();
      }
      return marketValue;
   }
}

Step 4 − Test the Portfolio class

포트폴리오 클래스에 모의 주식 서비스를 삽입하여 테스트 해 보겠습니다. Mock은 Mockito에 의해 생성됩니다.

File: PortfolioTester.java

package com.tutorialspoint.mock;

import java.util.ArrayList;
import java.util.List;

import static org.mockito.Mockito.*;

public class PortfolioTester {
	
   Portfolio portfolio;	
   StockService stockService;
	   
   
   public static void main(String[] args){
      PortfolioTester tester = new PortfolioTester();
      tester.setUp();
      System.out.println(tester.testMarketValue()?"pass":"fail");
   }
   
   public void setUp(){
      //Create a portfolio object which is to be tested		
      portfolio = new Portfolio();		
  
      //Create the mock object of stock service
      stockService = mock(StockService.class);		
  
      //set the stockService to the portfolio
      portfolio.setStockService(stockService);
   }
   
   public boolean testMarketValue(){
    	   
      //Creates a list of stocks to be added to the portfolio
      List<Stock> stocks = new ArrayList<Stock>();
      Stock googleStock = new Stock("1","Google", 10);
      Stock microsoftStock = new Stock("2","Microsoft",100);	
 
      stocks.add(googleStock);
      stocks.add(microsoftStock);

      //add stocks to the portfolio
      portfolio.setStocks(stocks);

      //mock the behavior of stock service to return the value of various stocks
      when(stockService.getPrice(googleStock)).thenReturn(50.00);
      when(stockService.getPrice(microsoftStock)).thenReturn(1000.00);		

      double marketValue = portfolio.getMarketValue();		
      return marketValue == 100500.0;
   }
}

Step 5 − Verify the result

다음을 사용하여 클래스 컴파일 javac 다음과 같이 컴파일러-

C:\Mockito_WORKSPACE>javac Stock.java StockService.java Portfolio.java PortfolioTester.java

이제 PortfolioTester를 실행하여 결과를 확인하십시오.

C:\Mockito_WORKSPACE>java PortfolioTester

출력 확인

pass