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   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
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  package org.apache.bigtop.datagenerators.bigpetstore.generators.purchase;
  
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  import java.util.List;
  
  import org.apache.bigtop.datagenerators.bigpetstore.Constants;
  import org.apache.bigtop.datagenerators.bigpetstore.datamodels.PetSpecies;
  import org.apache.bigtop.datagenerators.bigpetstore.datamodels.Product;
  import org.apache.bigtop.datagenerators.bigpetstore.datamodels.inputs.ProductCategory;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.products.ProductCategoryBuilder;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.purchase.MarkovPurchasingModel;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.purchase.PurchasingModelSamplerBuilder;
  import org.apache.bigtop.datagenerators.samplers.SeedFactory;
  import org.apache.bigtop.datagenerators.samplers.samplers.Sampler;
  import org.junit.Test;
  
  import com.google.common.collect.ImmutableMap;
  import com.google.common.collect.Lists;
  
  public class TestPurchasingModelSamplerBuilder
  {
  
  	private List<ProductCategory> createProducts()
  	{
  		List<ProductCategory> productCategories = Lists.newArrayList();
  
  		ProductCategoryBuilder foodBuilder = new ProductCategoryBuilder();
  		foodBuilder.addApplicableSpecies(PetSpecies.DOG);
  		foodBuilder.setAmountUsedPetPetAverage(1.0);
  		foodBuilder.setAmountUsedPetPetVariance(1.0);
  		foodBuilder.setDailyUsageRate(2.0);
  		foodBuilder.setCategory("dogFood");
  		foodBuilder.addProduct(new Product(ImmutableMap.of(Constants.PRODUCT_CATEGORY, (Object) "dogFood",
  				Constants.PRODUCT_QUANTITY, (Object) 60.0, "Flavor", "Fish & Potato")));
  		foodBuilder.addProduct(new Product(ImmutableMap.of(Constants.PRODUCT_CATEGORY, (Object) "dogFood",
  				Constants.PRODUCT_QUANTITY, (Object) 30.0, "Flavor", "Chicken & Rice")));
  		foodBuilder.addProduct(new Product(ImmutableMap.of(Constants.PRODUCT_CATEGORY, (Object) "dogFood",
  				Constants.PRODUCT_QUANTITY, (Object) 15.0, "Flavor", "Lamb & Barley")));
  		productCategories.add(foodBuilder.build());
  
  		ProductCategoryBuilder bagBuilder = new ProductCategoryBuilder();
  		bagBuilder.addApplicableSpecies(PetSpecies.DOG);
  		bagBuilder.setAmountUsedPetPetAverage(1.0);
  		bagBuilder.setAmountUsedPetPetVariance(1.0);
  		bagBuilder.setDailyUsageRate(2.0);
  		bagBuilder.setCategory("Poop Bags");
  		bagBuilder.addProduct(new Product(ImmutableMap.of(Constants.PRODUCT_CATEGORY, (Object) "Poop Bags",
  				Constants.PRODUCT_QUANTITY, (Object) 60.0, "Color", "Blue")));
  		bagBuilder.addProduct(new Product(ImmutableMap.of(Constants.PRODUCT_CATEGORY, (Object) "Poop Bags",
  				Constants.PRODUCT_QUANTITY, (Object) 30.0, "Color", "Red")));
  		bagBuilder.addProduct(new Product(ImmutableMap.of(Constants.PRODUCT_CATEGORY, (Object) "Poop Bags",
  				Constants.PRODUCT_QUANTITY, (Object) 120.0, "Color", "Multicolor")));
  		productCategories.add(bagBuilder.build());
  
  		return productCategories;
  	}
  
  	@Test
  	public void testBuild() throws Exception
  	{
  		SeedFactory seedFactory = new SeedFactory(1245);
  
  		List<ProductCategory> productCategories = createProducts();
  
  		PurchasingModelSamplerBuilder builder = new PurchasingModelSamplerBuilder(productCategories, seedFactory);
  		Sampler<MarkovPurchasingModel> sampler = builder.buildMarkovPurchasingModel();
  		MarkovPurchasingModel profile = sampler.sample();
  
  		assertNotNull(profile);
  		assertNotNull(profile.getProductCategories());
  		assertTrue(profile.getProductCategories().size() > 0);
  
  		for(String label : profile.getProductCategories())
  		{
  			assertNotNull(profile.getProfile(label));
  			assertNotNull(profile.getProfile(label).getStartWeights());
  			assertTrue(profile.getProfile(label).getStartWeights().size() > 0);
  			assertNotNull(profile.getProfile(label).getTransitionWeights());
  			assertTrue(profile.getProfile(label).getTransitionWeights().size() > 0);
  		}
  	}
  
  }
  