diff --git a/src/test/java/com/example/demo/DemoApplicationTests.java b/src/test/java/com/example/demo/DemoApplicationTests.java
index a98cad0..faf6a57 100644
--- a/src/test/java/com/example/demo/DemoApplicationTests.java
+++ b/src/test/java/com/example/demo/DemoApplicationTests.java
@@ -15,9 +15,11 @@ import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMock
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.web.servlet.MockMvc;
 
+import javax.transaction.Transactional;
 import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import static org.springframework.http.MediaType.*;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
@@ -48,7 +50,7 @@ class DemoApplicationTests {
 	@Test
 	@Order(1)
 	void shouldImportDatabase() throws Exception {
-		this.mvc.perform(post("/importDatabase").contentType(APPLICATION_XML_VALUE).content("<DataImportExportDto><people><people><id>1</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>2</id><name>Janina</name><surname>Kowalska</surname><student><id>1</id><personId>2</personId><index>654321</index></student></people><people><id>3</id><name>Anna</name><surname>Nowak</surname><student><id>2</id><personId>3</personId><index>123645</index></student></people><people><id>4</id><name>Katarzyna</name><surname>Adamska</surname><student><id>3</id><personId>4</personId><index>645123</index></student></people><people><id>5</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>6</id><name>Janina</name><surname>Kowalska</surname><student><id>4</id><personId>6</personId><index>654321</index></student></people><people><id>7</id><name>Anna</name><surname>Nowak</surname><student><id>5</id><personId>7</personId><index>123645</index></student></people><people><id>8</id><name>Katarzyna</name><surname>Adamska</surname><student><id>6</id><personId>8</personId><index>645123</index></student></people><people><id>9</id><name>Janina</name><surname>Kowalska</surname><student><id>7</id><personId>9</personId><index>654321</index></student></people><people><id>10</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>11</id><name>Janina</name><surname>Kowalska</surname><student><id>8</id><personId>11</personId><index>654321</index></student></people><people><id>12</id><name>Anna</name><surname>Nowak</surname><student><id>9</id><personId>12</personId><index>123645</index></student></people><people><id>13</id><name>Katarzyna</name><surname>Adamska</surname><student><id>10</id><personId>13</personId><index>645123</index></student></people><people><id>14</id><name>Iga</name><surname>Bartosz Collins</surname><student><id>11</id><personId>14</personId><index>123456</index></student></people><people><id>15</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>16</id><name>Janina</name><surname>Kowalska</surname><student><id>12</id><personId>16</personId><index>654321</index></student></people><people><id>17</id><name>Anna</name><surname>Nowak</surname><student><id>13</id><personId>17</personId><index>123645</index></student></people><people><id>18</id><name>Katarzyna</name><surname>Adamska</surname><student><id>14</id><personId>18</personId><index>645123</index></student></people><people><id>19</id><name>Beata</name><surname>Bielicka</surname><student><id>15</id><personId>19</personId><index>645123</index></student></people><people><id>20</id><name>Cecylia</name><surname>CzerwiÅ\u0084ska</surname><student><id>16</id><personId>20</personId><index>645123</index></student></people><people><id>21</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>22</id><name>Janina</name><surname>Kowalska</surname><student><id>18</id><personId>22</personId><index>654321</index></student></people><people><id>23</id><name>Anna</name><surname>Nowak</surname><student><id>19</id><personId>23</personId><index>123645</index></student></people></people><students><students><id>1</id><personId>2</personId><index>654321</index></students><students><id>2</id><personId>3</personId><index>123645</index></students><students><id>3</id><personId>4</personId><index>645123</index></students><students><id>4</id><personId>6</personId><index>654321</index></students><students><id>5</id><personId>7</personId><index>123645</index></students><students><id>6</id><personId>8</personId><index>645123</index></students><students><id>7</id><personId>9</personId><index>654321</index></students><students><id>8</id><personId>11</personId><index>654321</index></students><students><id>9</id><personId>12</personId><index>123645</index></students><students><id>10</id><personId>13</personId><index>645123</index></students><students><id>11</id><personId>14</personId><index>123456</index></students><students><id>12</id><personId>16</personId><index>654321</index></students><students><id>13</id><personId>17</personId><index>123645</index></students><students><id>14</id><personId>18</personId><index>645123</index></students><students><id>15</id><personId>19</personId><index>645123</index></students><students><id>16</id><personId>20</personId><index>645123</index></students><students><id>17</id> <personId>5</personId><index>123456</index></students><students><id>18</id><personId>22</personId><index>654321</index></students><students><id>19</id><personId>23</personId><index>123645</index></students></students><studentsGroups><studentsGroups><id>1</id><groupLeaders><groupLeaders><id>1</id><personId>1</personId><groupId>1</groupId></groupLeaders><groupLeaders><id>2</id><personId>4</personId><groupId>1</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>1</id><studentId>2</studentId><groupId>1</groupId></groupMembers><groupMembers><id>2</id><studentId>2</studentId><groupId>1</groupId></groupMembers></groupMembers></studentsGroups><studentsGroups><id>2</id><groupLeaders><groupLeaders><id>3</id><personId>5</personId><groupId>2</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>3</id><studentId>5</studentId><groupId>2</groupId></groupMembers><groupMembers><id>4</id><studentId>5</studentId><groupId>2</groupId></groupMembers><groupMembers><id>5</id><studentId>6</studentId><groupId>2</groupId></groupMembers></groupMembers></studentsGroups><studentsGroups><id>4</id><groupLeaders><groupLeaders><id>6</id><personId>19</personId><groupId>4</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>12</id><studentId>16</studentId><groupId>4</groupId></groupMembers></groupMembers></studentsGroups><studentsGroups><id>5</id><groupLeaders><groupLeaders><id>7</id><personId>21</personId><groupId>4</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>13</id><studentId>18</studentId><groupId>4</groupId></groupMembers><groupMembers><id>14</id><studentId>19</studentId><groupId>4</groupId></groupMembers></groupMembers></studentsGroups></studentsGroups><groupLeaders><groupLeaders><id>1</id><personId>1</personId><groupId>1</groupId></groupLeaders><groupLeaders><id>2</id><personId>4</personId><groupId>1</groupId></groupLeaders><groupLeaders><id>3</id><personId>5</personId><groupId>2</groupId></groupLeaders><groupLeaders><id>6</id><personId>19</personId><groupId>4</groupId></groupLeaders><groupLeaders><id>7</id><personId>21</personId><groupId>4</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>1</id><studentId>2</studentId><groupId>1</groupId></groupMembers><groupMembers><id>2</id><studentId>2</studentId><groupId>1</groupId></groupMembers><groupMembers><id>3</id><studentId>5</studentId><groupId>2</groupId></groupMembers><groupMembers><id>4</id><studentId>5</studentId><groupId>2</groupId></groupMembers><groupMembers><id>5</id><studentId>6</studentId><groupId>2</groupId></groupMembers><groupMembers><id>12</id><studentId>16</studentId><groupId>4</groupId></groupMembers><groupMembers><id>13</id><studentId>18</studentId><groupId>4</groupId></groupMembers><groupMembers><id>14</id><studentId>19</studentId><groupId>4</groupId></groupMembers></groupMembers></DataImportExportDto>"))
+		this.mvc.perform(post("/api/importDatabase").contentType(APPLICATION_XML_VALUE).content("<DataImportExportDto><people><people><id>1</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>2</id><name>Janina</name><surname>Kowalska</surname><student><id>1</id><personId>2</personId><index>654321</index></student></people><people><id>3</id><name>Anna</name><surname>Nowak</surname><student><id>2</id><personId>3</personId><index>123645</index></student></people><people><id>4</id><name>Katarzyna</name><surname>Adamska</surname><student><id>3</id><personId>4</personId><index>645123</index></student></people><people><id>5</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>6</id><name>Janina</name><surname>Kowalska</surname><student><id>4</id><personId>6</personId><index>654321</index></student></people><people><id>7</id><name>Anna</name><surname>Nowak</surname><student><id>5</id><personId>7</personId><index>123645</index></student></people><people><id>8</id><name>Katarzyna</name><surname>Adamska</surname><student><id>6</id><personId>8</personId><index>645123</index></student></people><people><id>9</id><name>Janina</name><surname>Kowalska</surname><student><id>7</id><personId>9</personId><index>654321</index></student></people><people><id>10</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>11</id><name>Janina</name><surname>Kowalska</surname><student><id>8</id><personId>11</personId><index>654321</index></student></people><people><id>12</id><name>Anna</name><surname>Nowak</surname><student><id>9</id><personId>12</personId><index>123645</index></student></people><people><id>13</id><name>Katarzyna</name><surname>Adamska</surname><student><id>10</id><personId>13</personId><index>645123</index></student></people><people><id>14</id><name>Iga</name><surname>Bartosz Collins</surname><student><id>11</id><personId>14</personId><index>123456</index></student></people><people><id>15</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>16</id><name>Janina</name><surname>Kowalska</surname><student><id>12</id><personId>16</personId><index>654321</index></student></people><people><id>17</id><name>Anna</name><surname>Nowak</surname><student><id>13</id><personId>17</personId><index>123645</index></student></people><people><id>18</id><name>Katarzyna</name><surname>Adamska</surname><student><id>14</id><personId>18</personId><index>645123</index></student></people><people><id>19</id><name>Beata</name><surname>Bielicka</surname><student><id>15</id><personId>19</personId><index>645123</index></student></people><people><id>20</id><name>Cecylia</name><surname>CzerwiÅ\u0084ska</surname><student><id>16</id><personId>20</personId><index>645123</index></student></people><people><id>21</id><name>Iga</name><surname>Bartosz Collins</surname><student/></people><people><id>22</id><name>Janina</name><surname>Kowalska</surname><student><id>18</id><personId>22</personId><index>654321</index></student></people><people><id>23</id><name>Anna</name><surname>Nowak</surname><student><id>19</id><personId>23</personId><index>123645</index></student></people></people><students><students><id>1</id><personId>2</personId><index>654321</index></students><students><id>2</id><personId>3</personId><index>123645</index></students><students><id>3</id><personId>4</personId><index>645123</index></students><students><id>4</id><personId>6</personId><index>654321</index></students><students><id>5</id><personId>7</personId><index>123645</index></students><students><id>6</id><personId>8</personId><index>645123</index></students><students><id>7</id><personId>9</personId><index>654321</index></students><students><id>8</id><personId>11</personId><index>654321</index></students><students><id>9</id><personId>12</personId><index>123645</index></students><students><id>10</id><personId>13</personId><index>645123</index></students><students><id>11</id><personId>14</personId><index>123456</index></students><students><id>12</id><personId>16</personId><index>654321</index></students><students><id>13</id><personId>17</personId><index>123645</index></students><students><id>14</id><personId>18</personId><index>645123</index></students><students><id>15</id><personId>19</personId><index>645123</index></students><students><id>16</id><personId>20</personId><index>645123</index></students><students><id>17</id> <personId>5</personId><index>123456</index></students><students><id>18</id><personId>22</personId><index>654321</index></students><students><id>19</id><personId>23</personId><index>123645</index></students></students><studentsGroups><studentsGroups><id>1</id><groupLeaders><groupLeaders><id>1</id><personId>1</personId><groupId>1</groupId></groupLeaders><groupLeaders><id>2</id><personId>4</personId><groupId>1</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>1</id><studentId>2</studentId><groupId>1</groupId></groupMembers><groupMembers><id>2</id><studentId>2</studentId><groupId>1</groupId></groupMembers></groupMembers></studentsGroups><studentsGroups><id>2</id><groupLeaders><groupLeaders><id>3</id><personId>5</personId><groupId>2</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>3</id><studentId>5</studentId><groupId>2</groupId></groupMembers><groupMembers><id>4</id><studentId>5</studentId><groupId>2</groupId></groupMembers><groupMembers><id>5</id><studentId>6</studentId><groupId>2</groupId></groupMembers></groupMembers></studentsGroups><studentsGroups><id>4</id><groupLeaders><groupLeaders><id>6</id><personId>19</personId><groupId>4</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>12</id><studentId>16</studentId><groupId>4</groupId></groupMembers></groupMembers></studentsGroups><studentsGroups><id>5</id><groupLeaders><groupLeaders><id>7</id><personId>21</personId><groupId>4</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>13</id><studentId>18</studentId><groupId>4</groupId></groupMembers><groupMembers><id>14</id><studentId>19</studentId><groupId>4</groupId></groupMembers></groupMembers></studentsGroups></studentsGroups><groupLeaders><groupLeaders><id>1</id><personId>1</personId><groupId>1</groupId></groupLeaders><groupLeaders><id>2</id><personId>4</personId><groupId>1</groupId></groupLeaders><groupLeaders><id>3</id><personId>5</personId><groupId>2</groupId></groupLeaders><groupLeaders><id>6</id><personId>19</personId><groupId>4</groupId></groupLeaders><groupLeaders><id>7</id><personId>21</personId><groupId>4</groupId></groupLeaders></groupLeaders><groupMembers><groupMembers><id>1</id><studentId>2</studentId><groupId>1</groupId></groupMembers><groupMembers><id>2</id><studentId>2</studentId><groupId>1</groupId></groupMembers><groupMembers><id>3</id><studentId>5</studentId><groupId>2</groupId></groupMembers><groupMembers><id>4</id><studentId>5</studentId><groupId>2</groupId></groupMembers><groupMembers><id>5</id><studentId>6</studentId><groupId>2</groupId></groupMembers><groupMembers><id>12</id><studentId>16</studentId><groupId>4</groupId></groupMembers><groupMembers><id>13</id><studentId>18</studentId><groupId>4</groupId></groupMembers><groupMembers><id>14</id><studentId>19</studentId><groupId>4</groupId></groupMembers></groupMembers></DataImportExportDto>"))
 				.andDo(print())
 				.andExpect(status().isOk());
 	}
@@ -56,7 +58,7 @@ class DemoApplicationTests {
 	@Test
 	@Order(2)
 	void shouldExportDatabase() throws Exception {
-		this.mvc.perform(get("/exportDatabase"))
+		this.mvc.perform(get("/api/exportDatabase"))
 				.andDo(print())
 				.andExpect(status().isOk());
 	}
@@ -66,10 +68,29 @@ class DemoApplicationTests {
 		Person person = new Person(null, "Iga", "Bartosz Collins", new Student(null, null, "123456"));
 		person.getStudent().setPerson(person);
 		person = personRepository.save(person);
-		this.mvc.perform(get("/person/"+person.getId())).andDo(print()).andExpect(status().isOk())
+		this.mvc.perform(get("/api/person/"+person.getId())).andDo(print()).andExpect(status().isOk())
 				.andExpect(content().json("{\"name\": \"Iga\", \"surname\": \"Bartosz Collins\", \"student\":  {\"personId\": "+person.getId()+", \"index\": \"123456\"}}"));
 	}
 
+	@Test
+	void shouldGetAllPeople() throws Exception {
+		Person person = new Person(null, "Iga", "Bartosz Collins", new Student(null, null, "123456"));
+		person.getStudent().setPerson(person);
+		person = personRepository.save(person);
+
+		Person person2 = new Person(null, "Janina", "Kowalska", new Student(null, null, "654321"));
+		person2.getStudent().setPerson(person2);
+		person2 = personRepository.save(person2);
+
+		List<PersonDto> people = personRepository.findAll().stream().map(Person::toDto).collect(Collectors.toList());
+		String peopleJson = mapper.writeValueAsString(people);
+		this.mvc.perform(get("/api/person"))
+				.andDo(print())
+				.andExpect(status().isOk())
+				.andExpect(content().json(peopleJson));
+				//.andExpect(content().json("[{\"name\": \"Iga\", \"surname\": \"Bartosz Collins\", \"student\":  {\"personId\": "+person.getId()+", \"index\": \"123456\"}}, {\"name\": \"Janina\", \"surname\": \"Kowalska\", \"student\":  {\"personId\": "+person2.getId()+", \"index\": \"654321\"}}]"));
+	}
+
 	@Test
 	void shouldUpdatePerson() throws Exception {
 		Person person = new Person(null, "Iga", "Bartosz Collins", new Student(null, null, "123456"));
@@ -79,7 +100,7 @@ class DemoApplicationTests {
 
 		String requestJson = mapper.writeValueAsString(personDto);
 
-		this.mvc.perform(put("/person").contentType(APPLICATION_JSON).content(requestJson)).andDo(print()).andExpect(status().isOk())
+		this.mvc.perform(put("/api/person").contentType(APPLICATION_JSON).content(requestJson)).andDo(print()).andExpect(status().isOk())
 			.andExpect(content().json("{\"name\": \"Janina\", \"surname\": \"Kowalska\", \"student\":  {\"personId\": "+person.getId()+", \"index\": \"654321\"}}"));
 	}
 
@@ -88,7 +109,7 @@ class DemoApplicationTests {
 		PersonDto personDto = new PersonDto(null, "Janina", "Kowalska", new StudentDto(null, null, "654321"));
 
 		String requestJson = mapper.writeValueAsString(personDto);
-		this.mvc.perform(post("/person").contentType(APPLICATION_JSON).content(requestJson)).andDo(print())
+		this.mvc.perform(post("/api/person").contentType(APPLICATION_JSON).content(requestJson)).andDo(print())
 				.andExpect(status().isOk())
 				.andExpect(content().json("{\"name\": \"Janina\", \"surname\": \"Kowalska\", \"student\":  {\"index\": \"654321\"}}"));
 	}
@@ -102,7 +123,7 @@ class DemoApplicationTests {
 
 		String requestJson = mapper.writeValueAsString(personDto);
 
-		this.mvc.perform(put("/person").contentType(APPLICATION_JSON).content(requestJson))
+		this.mvc.perform(put("/api/person").contentType(APPLICATION_JSON).content(requestJson))
 				.andDo(print())
 				.andExpect(status().isBadRequest());
 	}
@@ -112,7 +133,7 @@ class DemoApplicationTests {
 		PersonDto personDto = new PersonDto(null, "Janina", "Kowalska", new StudentDto(null, null, "ert654321"));
 
 		String requestJson = mapper.writeValueAsString(personDto);
-		this.mvc.perform(post("/person").contentType(APPLICATION_JSON).content(requestJson))
+		this.mvc.perform(post("/api/person").contentType(APPLICATION_JSON).content(requestJson))
 				.andDo(print())
 				.andExpect(status().isBadRequest());
 	}
@@ -122,7 +143,7 @@ class DemoApplicationTests {
 		Person person = new Person(null, "Iga", "Bartosz Collins", new Student(null, null, "123456"));
 		person.getStudent().setPerson(person);
 		personRepository.save(person);
-		this.mvc.perform(delete("/person/"+person.getId())).andDo(print()).andExpect(status().isOk());
+		this.mvc.perform(delete("/api/person/"+person.getId())).andDo(print()).andExpect(status().isOk());
 	}
 
 	@Test
@@ -160,10 +181,90 @@ class DemoApplicationTests {
 		studentsGroup.addGroupMember(groupMember2);
 		studentsGroup.addGroupMember(groupMember3);
 		studentsGroup = studentsGroupRepository.save(studentsGroup);
-		this.mvc.perform(get("/group/"+studentsGroup.getId())).andDo(print()).andExpect(status().isOk())
+		this.mvc.perform(get("/api/group/"+studentsGroup.getId())).andDo(print()).andExpect(status().isOk())
 				.andExpect(content().json("{\"id\":"+studentsGroup.getId()+",\"groupLeaders\":[{\"id\":"+studentsGroup.getGroupLeaders().get(0).getId()+",\"personId\":"+studentsGroup.getGroupLeaders().get(0).getPerson().getId()+",\"groupId\":"+studentsGroup.getId()+"}],\"groupMembers\":[{\"id\":"+studentsGroup.getGroupMembers().get(0).getId()+",\"studentId\":"+studentsGroup.getGroupMembers().get(0).getStudent().getId()+",\"groupId\":"+studentsGroup.getId()+"},{\"id\":"+studentsGroup.getGroupMembers().get(1).getId()+",\"studentId\":"+studentsGroup.getGroupMembers().get(1).getStudent().getId()+",\"groupId\":"+studentsGroup.getId()+"},{\"id\":"+studentsGroup.getGroupMembers().get(2).getId()+",\"studentId\":"+studentsGroup.getGroupMembers().get(2).getStudent().getId()+",\"groupId\":"+studentsGroup.getId()+"}]}"));
 	}
 
+	@Test
+	@Transactional
+	void shouldAllGroups() throws Exception {
+		Person person = new Person(null, "Iga", "Bartosz Collins", null);
+		person = personRepository.save(person);
+		GroupLeader groupLeader = new GroupLeader(null, person, null);
+		person.addGroupLeader(groupLeader);
+
+		Person person2 = new Person(null, "Janina", "Kowalska", new Student(null, null, "654321"));
+		person2.getStudent().setPerson(person2);
+		person2 = personRepository.save(person2);
+		GroupMember groupMember = new GroupMember(null, person2.getStudent(), null);
+		person2.getStudent().addGroupMember(groupMember);
+
+		Person person3 = new Person(null, "Anna", "Nowak", new Student(null, null, "123645"));
+		person3.getStudent().setPerson(person3);
+		person3 = personRepository.save(person3);
+		GroupMember groupMember2 = new GroupMember(null, person3.getStudent(), null);
+		person3.getStudent().addGroupMember(groupMember2);
+
+		Person person4 = new Person(null, "Katarzyna", "Adamska", new Student(null, null, "645123"));
+		person4.getStudent().setPerson(person4);
+		person4 = personRepository.save(person4);
+		GroupMember groupMember3 = new GroupMember(null, person4.getStudent(), null);
+		person4.getStudent().addGroupMember(groupMember3);
+
+		StudentsGroup studentsGroup = new StudentsGroup(
+				null,
+				new ArrayList<>(),
+				new ArrayList<>()
+		);
+		studentsGroup.addGroupLeader(groupLeader);
+		studentsGroup.addGroupMember(groupMember);
+		studentsGroup.addGroupMember(groupMember2);
+		studentsGroup.addGroupMember(groupMember3);
+		studentsGroup = studentsGroupRepository.save(studentsGroup);
+
+		Person person5 = new Person(null, "Iga", "Bartosz Collins", null);
+		person5 = personRepository.save(person);
+		GroupLeader groupLeader5 = new GroupLeader(null, person, null);
+		person5.addGroupLeader(groupLeader5);
+
+		Person person6 = new Person(null, "Janina", "Kowalska", new Student(null, null, "654321"));
+		person6.getStudent().setPerson(person6);
+		person6 = personRepository.save(person6);
+		GroupMember groupMember6 = new GroupMember(null, person6.getStudent(), null);
+		person6.getStudent().addGroupMember(groupMember6);
+
+		Person person7 = new Person(null, "Anna", "Nowak", new Student(null, null, "123645"));
+		person7.getStudent().setPerson(person7);
+		person7 = personRepository.save(person7);
+		GroupMember groupMember7 = new GroupMember(null, person7.getStudent(), null);
+		person7.getStudent().addGroupMember(groupMember7);
+
+		Person person8 = new Person(null, "Katarzyna", "Adamska", new Student(null, null, "645123"));
+		person8.getStudent().setPerson(person8);
+		person8 = personRepository.save(person8);
+		GroupMember groupMember8 = new GroupMember(null, person8.getStudent(), null);
+		person8.getStudent().addGroupMember(groupMember8);
+
+		StudentsGroup studentsGroup2 = new StudentsGroup(
+				null,
+				new ArrayList<>(),
+				new ArrayList<>()
+		);
+		studentsGroup2.addGroupLeader(groupLeader5);
+		studentsGroup2.addGroupMember(groupMember6);
+		studentsGroup2.addGroupMember(groupMember7);
+		studentsGroup2.addGroupMember(groupMember8);
+		studentsGroup2 = studentsGroupRepository.save(studentsGroup2);
+
+		List<GroupDto> groups = studentsGroupRepository.findAll().stream().map(StudentsGroup::toDto).collect(Collectors.toList());
+		String groupJson = mapper.writeValueAsString(groups);
+		this.mvc.perform(get("/api/group"))
+				.andDo(print())
+				.andExpect(status().isOk())
+				.andExpect(content().json(groupJson));
+				//.andExpect(content().json("[{\"id\":"+studentsGroup.getId()+",\"groupLeaders\":[{\"id\":"+studentsGroup.getGroupLeaders().get(0).getId()+",\"personId\":"+studentsGroup.getGroupLeaders().get(0).getPerson().getId()+",\"groupId\":"+studentsGroup.getId()+"}],\"groupMembers\":[{\"id\":"+studentsGroup.getGroupMembers().get(0).getId()+",\"studentId\":"+studentsGroup.getGroupMembers().get(0).getStudent().getId()+",\"groupId\":"+studentsGroup.getId()+"},{\"id\":"+studentsGroup.getGroupMembers().get(1).getId()+",\"studentId\":"+studentsGroup.getGroupMembers().get(1).getStudent().getId()+",\"groupId\":"+studentsGroup.getId()+"},{\"id\":"+studentsGroup.getGroupMembers().get(2).getId()+",\"studentId\":"+studentsGroup.getGroupMembers().get(2).getStudent().getId()+",\"groupId\":"+studentsGroup.getId()+"}]}, {\"id\":"+studentsGroup2.getId()+",\"groupLeaders\":[{\"id\":"+studentsGroup2.getGroupLeaders().get(0).getId()+",\"personId\":"+studentsGroup2.getGroupLeaders().get(0).getPerson().getId()+",\"groupId\":"+studentsGroup2.getId()+"}],\"groupMembers\":[{\"id\":"+studentsGroup2.getGroupMembers().get(0).getId()+",\"studentId\":"+studentsGroup2.getGroupMembers().get(0).getStudent().getId()+",\"groupId\":"+studentsGroup2.getId()+"},{\"id\":"+studentsGroup2.getGroupMembers().get(1).getId()+",\"studentId\":"+studentsGroup2.getGroupMembers().get(1).getStudent().getId()+",\"groupId\":"+studentsGroup2.getId()+"},{\"id\":"+studentsGroup2.getGroupMembers().get(2).getId()+",\"studentId\":"+studentsGroup2.getGroupMembers().get(2).getStudent().getId()+",\"groupId\":"+studentsGroup2.getId()+"}]}]"));
+	}
+
 	@Test
 	void shouldUpdateGroup() throws Exception {
 		Person person = new Person(null, "Iga", "Bartosz Collins",null);
@@ -222,7 +323,7 @@ class DemoApplicationTests {
 
 		String requestJson = mapper.writeValueAsString(groupDto);
 
-		this.mvc.perform(put("/group").contentType(APPLICATION_JSON).content(requestJson)).andDo(print()).andExpect(status().isOk())
+		this.mvc.perform(put("/api/group").contentType(APPLICATION_JSON).content(requestJson)).andDo(print()).andExpect(status().isOk())
 				.andExpect(content().json("{\"id\":"+studentsGroup.getId()+",\"groupLeaders\":[{\"personId\":"+person5.getId()+",\"groupId\":"+studentsGroup.getId()+"}],\"groupMembers\":[{\"studentId\":"+person6.getStudent().getId()+",\"groupId\":"+studentsGroup.getId()+"}]}"));
 	}
 
@@ -254,7 +355,7 @@ class DemoApplicationTests {
 
 		String requestJson = mapper.writeValueAsString(groupDto);
 
-		this.mvc.perform(put("/group").contentType(APPLICATION_JSON).content(requestJson))
+		this.mvc.perform(put("/api/group").contentType(APPLICATION_JSON).content(requestJson))
 				.andDo(print())
 				.andExpect(status().isBadRequest());
 	}
@@ -278,7 +379,7 @@ class DemoApplicationTests {
 
 		String requestJson = mapper.writeValueAsString(groupDto);
 
-		this.mvc.perform(post("/group").contentType(APPLICATION_JSON).content(requestJson))
+		this.mvc.perform(post("/api/group").contentType(APPLICATION_JSON).content(requestJson))
 				.andDo(print())
 				.andExpect(status().isBadRequest());
 	}
@@ -303,7 +404,7 @@ class DemoApplicationTests {
 		);
 
 		String requestJson = mapper.writeValueAsString(groupDto);
-		this.mvc.perform(post("/group").contentType(APPLICATION_JSON).content(requestJson)).andDo(print())
+		this.mvc.perform(post("/api/group").contentType(APPLICATION_JSON).content(requestJson)).andDo(print())
 				.andExpect(status().isOk())
 				.andExpect(content().json("{\"groupLeaders\":[{\"personId\":"+person.getId()+"}],\"groupMembers\":[{\"studentId\":"+person2.getStudent().getId()+"},{\"studentId\":"+person3.getStudent().getId()+"}]}"));
 	}
@@ -343,7 +444,7 @@ class DemoApplicationTests {
 		studentsGroup.addGroupMember(groupMember2);
 		studentsGroup.addGroupMember(groupMember3);
 		studentsGroup = studentsGroupRepository.save(studentsGroup);
-		this.mvc.perform(delete("/group/"+studentsGroup.getId())).andDo(print()).andExpect(status().isOk());
+		this.mvc.perform(delete("/api/group/"+studentsGroup.getId())).andDo(print()).andExpect(status().isOk());
 	}
 
 	@Test
@@ -382,7 +483,7 @@ class DemoApplicationTests {
 
 		String requestJson = mapper.writeValueAsString(groupMemberDto);
 
-		this.mvc.perform(put("/group/"+studentsGroup.getId()+"/member").contentType(APPLICATION_JSON).content(requestJson))
+		this.mvc.perform(put("/api/group/"+studentsGroup.getId()+"/member").contentType(APPLICATION_JSON).content(requestJson))
 				.andDo(print())
 				.andExpect(status().isOk())
 				.andExpect(content().json("{\"studentId\":"+person4.getStudent().getId()+",\"groupId\":"+studentsGroup.getId()+"}"));
@@ -412,7 +513,7 @@ class DemoApplicationTests {
 
 		String requestJson = mapper.writeValueAsString(groupMemberDto);
 
-		this.mvc.perform(put("/group/"+studentsGroup.getId()+"/member").contentType(APPLICATION_JSON).content(requestJson))
+		this.mvc.perform(put("/api/group/"+studentsGroup.getId()+"/member").contentType(APPLICATION_JSON).content(requestJson))
 				.andDo(print())
 				.andExpect(status().isBadRequest());
 	}
@@ -453,7 +554,7 @@ class DemoApplicationTests {
 
 		String requestJson = mapper.writeValueAsString(groupLeaderDto);
 
-		this.mvc.perform(put("/group/"+studentsGroup.getId()+"/leader").contentType(APPLICATION_JSON).content(requestJson))
+		this.mvc.perform(put("/api/group/"+studentsGroup.getId()+"/leader").contentType(APPLICATION_JSON).content(requestJson))
 				.andDo(print())
 				.andExpect(status().isOk())
 				.andExpect(content().json("{\"personId\":"+person4.getId()+",\"groupId\":"+studentsGroup.getId()+"}"));
@@ -488,7 +589,7 @@ class DemoApplicationTests {
 		studentsGroup.addGroupMember(groupMember2);
 		studentsGroup = studentsGroupRepository.save(studentsGroup);
 
-		this.mvc.perform(delete("/group/"+studentsGroup.getId()+"/member/"+studentsGroup.getGroupMembers().get(0).getId()))
+		this.mvc.perform(delete("/api/group/"+studentsGroup.getId()+"/member/"+studentsGroup.getGroupMembers().get(0).getId()))
 				.andDo(print())
 				.andExpect(status().isOk());
 	}
@@ -522,7 +623,7 @@ class DemoApplicationTests {
 		studentsGroup.addGroupMember(groupMember2);
 		studentsGroup = studentsGroupRepository.save(studentsGroup);
 
-		this.mvc.perform(delete("/group/"+studentsGroup.getId()+"/leader/"+studentsGroup.getGroupLeaders().get(0).getId()))
+		this.mvc.perform(delete("/api/group/"+studentsGroup.getId()+"/leader/"+studentsGroup.getGroupLeaders().get(0).getId()))
 				.andDo(print())
 				.andExpect(status().isOk());
 	}