Move SmallCityServiceTest and create BusinessesServiceTest

pom.xml

@@ -83,6 +83,12 @@
       <artifactId>java-dotenv</artifactId>
       <version>5.2.1</version>
     </dependency>
+    <dependency>
+        <groupId>org.mockito</groupId>
+        <artifactId>mockito-all</artifactId>
+        <version>1.8.4</version>
+        <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>

src/main/java/com/google/sps/data/BusinessesService.java

@@ -69,6 +69,11 @@ public class BusinessesService {
   public BusinessesService(List<Listing> allBusinesses) {
     this.allBusinesses = allBusinesses;
   }
+
+  // Accessor method for testing purposes
+  public List<Listing> getAllBusinesses() {
+    return allBusinesses;
+  }
 
   public List<Listing> 
         getBusinessesFromTextSearch(MapLocation mapLocation, String product) {

src/test/java/com/google/sps/BusinessesServiceTest.java

@@ -0,0 +1,98 @@
+import java.util.List;
+import java.util.LinkedList;
+import java.util.Arrays;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import com.google.sps.data.BusinessesService;
+import com.google.sps.data.Listing;
+import com.google.sps.data.MapLocation;
+import static org.mockito.Mockito.*;
+
+@RunWith(JUnit4.class)
+public final class BusinessesServiceTest {
+
+  private final int MIN_LISTINGS_ALLOWED = 20;
+  private final int MAX_LISTINGS_ALLOWED = 60;
+
+  // Address location in Owings Mills, MD
+  private final MapLocation TEST_MAP_LOCATION = new MapLocation(39.459836, -76.742536);
+  private final String TEST_PRODUCT = "pizza";
+
+  private final List<Listing> TEST_ALL_BUSINESSES = new LinkedList<>();
+
+  private BusinessesService mockedBusinessesService = mock(BusinessesService.class);
+  private BusinessesService testBusinessesService = new BusinessesService(TEST_ALL_BUSINESSES);
+
+  // 3 known returned businesses
+  private List<Listing> TEST_TEXT_SEARCH_RESULT = 
+        new LinkedList<>(Arrays.asList(new Listing("Pizza Connection", 
+        "11215 York Rd, Cockeysville, MD 21030, United States", null,
+        4.4, null, null), 
+        new Listing("Brookside's Pizzeria",
+        "9419 Common Brook Rd #109, Owings Mills, MD 21117, United States", null,
+        4.2, null, null),
+        new Listing("Village Pizza",
+        "38 Main St, Reisterstown, MD 21136, United States", null,
+        4.2, null, null)));
+
+  // 3 known returned businesses
+  private List<Listing> TEST_NEARBY_SEARCH_RESULT = 
+        new LinkedList<>(Arrays.asList(new Listing("Perfect Windows Inc",
+        "2927 Walnut Avenue, Owings Mills", null,
+        0.0, null, null),
+        new Listing("Fortuna Liquor & Food",
+        "12147 Park Heights Avenue, Owings Mills", null,
+        0.0, null, null),
+        new Listing("Dantech, Inc",
+        "12149 Park Heights Avenue, Owings Mills", null,
+        5.0, null, null)));
+
+  @Test
+  public void testGetBusinessesFromTextSearch() {
+    when(mockedBusinessesService.getBusinessesFromTextSearch(TEST_MAP_LOCATION, TEST_PRODUCT))
+          .thenReturn(TEST_TEXT_SEARCH_RESULT); 
+
+    List<Listing> expected = mockedBusinessesService
+          .getBusinessesFromTextSearch(TEST_MAP_LOCATION, TEST_PRODUCT);
+    List<Listing> actual = testBusinessesService
+          .getBusinessesFromTextSearch(TEST_MAP_LOCATION, TEST_PRODUCT);
+
+    Assert.assertTrue(actual.size() >= MIN_LISTINGS_ALLOWED);
+    Assert.assertTrue(actual.size() <= MAX_LISTINGS_ALLOWED);
+
+    int expectedListingsFound = 0;
+    for (Listing expectedListing : expected) {
+      for (Listing actualListing : actual) {
+        if (expectedListing.getName().equals(actualListing.getName())) {
+          expectedListingsFound++;
+        }
+      }
+    }
+    Assert.assertEquals(expectedListingsFound, expected.size());
+  }
+
+  @Test
+  public void testGetBusinessesFromNearbySearch() {
+    when(mockedBusinessesService.getBusinessesFromNearbySearch(TEST_MAP_LOCATION))
+          .thenReturn(TEST_NEARBY_SEARCH_RESULT); 
+    List<Listing> expected = mockedBusinessesService
+          .getBusinessesFromNearbySearch(TEST_MAP_LOCATION);
+    List<Listing> actual = testBusinessesService
+          .getBusinessesFromNearbySearch(TEST_MAP_LOCATION);
+
+    Assert.assertTrue(actual.size() >= MIN_LISTINGS_ALLOWED);
+    Assert.assertTrue(actual.size() <= MAX_LISTINGS_ALLOWED);
+
+    int expectedListingsFound = 0;
+    for (Listing expectedListing : expected) {
+      for (Listing actualListing : actual) {
+        if (expectedListing.getName().equals(actualListing.getName())) {
+          expectedListingsFound++;
+        }
+      }
+    }
+    Assert.assertEquals(expectedListingsFound, expected.size());
+  }
+}

src/test/java/com/google/sps/BigBusinessesTest.java → src/test/java/com/google/sps/SmallCityServiceTest.java

@@ -45,7 +45,7 @@
 import com.google.appengine.api.datastore.KeyFactory;
 
 @RunWith(JUnit4.class)
-public final class BigBusinessesTest {
+public final class SmallCityServiceTest {
   private Photo[] samplePhotos = new Photo[0];
   private String[] sampleBusinessTypes = new String[0];
   private MapLocation testLocation = new MapLocation(40.457177, -79.916696);