/* File:    StockCacheTest.java
 * Created: 8/17/2018
 * Author:  Sabbir Manandhar
 *
 * Copyright (c) 2018 Hogwart Inc.
 */

//=======================================================================================

import junit.framework.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.modules.junit4.PowerMockRunner;
import org.powermock.reflect.Whitebox;

import java.util.HashMap;
import java.util.Map;

/**
 * @author Sabbir Manandhar manandharsabbir@gmail.com
 * @version 1.0
 */
@RunWith(PowerMockRunner.class)
public class StockCacheTest {


  @Test
  public void testGetStockDetail() {
    // START Mocked cachedStock
    Map<String, String[]> cachedStock = new HashMap<String, String[]>();
    String stockNumber = "LAS3453SFDSFD";
    String[] stockDetail = new String[]{stockNumber, "This is the most active stock last week", "2500.00"};
    cachedStock.put(stockNumber, stockDetail);

    stockNumber = "UTR3453SFDSFD";
    stockDetail = new String[]{stockNumber, "The most successful", "644500.00"};
    cachedStock.put(stockNumber, stockDetail);

    stockNumber = "UIYR343SFDSFD";
    stockDetail = new String[]{stockNumber, "Heavily beaten.", "-45400.00"};
    cachedStock.put(stockNumber, stockDetail);

    stockNumber = "BJKB923FDSFD";
    stockDetail = new String[]{stockNumber, "Useless", "00.00"};
    cachedStock.put(stockNumber, stockDetail);
    // END Mocked cachedStock

    StockCache stockCache = new StockCache();
    Whitebox.setInternalState(stockCache, "cachedStocks", cachedStock); // SETS THE INTERNAL PRIVATE FIELD

    stockDetail = stockCache.getStockDetail("LAS3453SFDSFD");
    Assert.assertNotNull(stockDetail);
    Assert.assertEquals("This is the most active stock last week", stockDetail[1]);
    Assert.assertEquals("2500.00", stockDetail[2]);

    stockDetail = stockCache.getStockDetail("UIYR343SFDSFD");
    Assert.assertNotNull(stockDetail);
    Assert.assertEquals("Heavily beaten.", stockDetail[1]);
    Assert.assertEquals("-45400.00", stockDetail[2]);
  } // testGetStockDetail

} // StockCacheTest

//=======================================================================================

class StockCache {

  private Map<String, String[]> cachedStocks;

  //-------------------------------------------------------------------------------------

  /**
   * Populates the cached stocks list
   */
  public void initializeCachedStocks() {
    // implementation to populate the cache list
    // could be from disk or network or any other
  } // initializeCachedStocks

  //-------------------------------------------------------------------------------------

  /**
   * Returns the stock details of a stock corresponding to the stock number
   *
   * @param stockNumber stock number of the stock of which we need the detail
   * @return Stock Detail if it exists in the cache, otherwise NULL
   */
  public String[] getStockDetail(String stockNumber) {
    return this.cachedStocks.get(stockNumber);
  } // getStockDetail

} // StockCache