ass1-doc/src/test/java/dst/ass1/doc/tests/Ass1_4_3_01Test.java

   1 package dst.ass1.doc.tests;
   2
   3 import static org.junit.Assert.assertNotNull;
   4 import static org.junit.Assert.assertTrue;
   5
   6 import java.util.List;
   7 import java.util.stream.StreamSupport;
   8
   9 import org.bson.Document;
  10 import org.junit.ClassRule;
  11 import org.junit.Rule;
  12 import org.junit.Test;
  13
  14 import dst.ass1.doc.EmbeddedMongo;
  15 import dst.ass1.doc.MongoService;
  16 import dst.ass1.jpa.util.Constants;
  17
  18 public class Ass1_4_3_01Test {
  19
  20     @ClassRule
  21     public static EmbeddedMongo embeddedMongo = new EmbeddedMongo();
  22
  23     @Rule
  24     public MongoService mongo = new MongoService(db -> {
  25         boolean exists = StreamSupport.stream(db.listCollectionNames().spliterator(), false)
  26                 .anyMatch(Constants.COLL_MATERIAL_DATA::equalsIgnoreCase);
  27
  28         if (!exists) {
  29             db.createCollection(Constants.COLL_MATERIAL_DATA); // make sure the empty collection exists
  30         }
  31     });
  32
  33     @Test
  34     public void getDocumentStatistics_withEmptyData_returnsEmptyStatistics() throws Exception {
  35         List<Document> documentStatistics = mongo.getDocumentQuery().getDocumentStatistics();
  36         assertNotNull(documentStatistics);
  37         assertTrue(documentStatistics.isEmpty());
  38     }
  39
  40 }