Added tests with MongoTemplate

Author: alex-semenyuk

spring-data-mongodb/src/main/java/org/baeldung/service/UserService.java

@@ -0,0 +1,125 @@
+package org.baeldung.mongotemplate;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertThat;
+
+import org.baeldung.config.MongoConfig;
+import org.baeldung.model.User;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.mongodb.core.MongoTemplate;
+import org.springframework.data.mongodb.core.query.Criteria;
+import org.springframework.data.mongodb.core.query.Query;
+import org.springframework.data.mongodb.core.query.Update;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = MongoConfig.class)
+public class MongoTemplateIntegrationTest {
+    
+    @Autowired
+    private MongoTemplate mongoTemplate;
+
+    @Before
+    public void testSetup() {
+        mongoTemplate.createCollection(User.class);
+    }
+
+    @After
+    public void tearDown() {
+        mongoTemplate.dropCollection(User.class);
+    }
+    
+    @Test
+    public void whenInsertingUser_thenUserIsInserted() {
+        User user = new User();
+        user.setName("Jon");
+        mongoTemplate.insert(user);
+    }
+
+    @Test
+    public void givenUserExists_whenSavingExistUser_thenUserIsUpdated() {
+        User user = new User();
+        user.setName("Jack");
+        mongoTemplate.insert(user);
+        
+        user = new User();
+        user.setName("Jim");
+        mongoTemplate.save(user);
+    }
+
+    @Test
+    public void givenUsersExist_whenUpdatingFirstUser_thenFirstUserIsUpdated() {
+        User user = new User();
+        user.setName("Alex");
+        mongoTemplate.insert(user);
+
+        user = new User();
+        user.setName("Alex");
+        mongoTemplate.insert(user);
+        
+        Query query = new Query();
+        query.addCriteria(Criteria.where("name").is("Alex"));
+        Update update = new Update();
+        update.set("name", "James");
+        mongoTemplate.updateFirst(query, update, User.class);
+    }
+
+    @Test
+    public void givenUsersExist_whenUpdatingMultiUser_thenAllUserAreUpdated() {
+        User user = new User();
+        user.setName("Eugen");
+        mongoTemplate.insert(user);
+
+        user = new User();
+        user.setName("Eugen");
+        mongoTemplate.insert(user);
+        
+        Query query = new Query();
+        query.addCriteria(Criteria.where("name").is("Eugen"));
+        Update update = new Update();
+        update.set("name", "Victor");
+        mongoTemplate.updateMulti(query, update, User.class);
+    }
+
+    @Test
+    public void givenUserExists_whenFindingAndModifyingUser_thenUserIsReturnedAndUpdated() {
+        User user = new User();
+        user.setName("Markus");
+        mongoTemplate.insert(user);
+        
+        Query query = new Query();
+        query.addCriteria(Criteria.where("name").is("Markus"));
+        Update update = new Update();
+        update.set("name", "Nick");
+        user = mongoTemplate.findAndModify(query, update, User.class);
+        assertThat(user.getName(),is("Markus"));
+    }
+
+    @Test
+    public void givenUserExists_whenUpsertingUser_thenUserIsUpdated() {
+        User user = new User();
+        user.setName("Markus");
+        mongoTemplate.insert(user);
+        
+        Query query = new Query();
+        query.addCriteria(Criteria.where("name").is("Markus"));
+        Update update = new Update();
+        update.set("name", "Nick");
+        mongoTemplate.upsert(query, update, User.class);
+    }
+
+    @Test
+    public void givenUserExists_whenRemovingUser_thenUserIsRemoved() {
+        User user = new User();
+        user.setName("Benn");
+        mongoTemplate.insert(user);
+        
+        mongoTemplate.remove(user, "user");
+    }
+
+}