diff --git a/race/src/test/java/cz/muni/pa165/race/rest/RaceRepositoryTest.java b/race/src/test/java/cz/muni/pa165/race/rest/RaceRepositoryTest.java
index b6da03fc36ac7c04c10af79b803ec718e6e378c3..ff2254da1368fff9261bf2e3345d2520d02dce8a 100644
--- a/race/src/test/java/cz/muni/pa165/race/rest/RaceRepositoryTest.java
+++ b/race/src/test/java/cz/muni/pa165/race/rest/RaceRepositoryTest.java
@@ -1,18 +1,17 @@
 package cz.muni.pa165.race.rest;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 import cz.muni.pa165.race.data.model.Race;
 import cz.muni.pa165.race.data.repository.RaceRepository;
 import org.junit.jupiter.api.Assertions;
-import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.Test;
-import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
 import org.springframework.boot.test.autoconfigure.orm.jpa.TestEntityManager;
-import org.springframework.test.context.junit4.SpringRunner;
 
 @DataJpaTest
-public class RaceRepositoryTest {
+class RaceRepositoryTest {
 
   @Autowired
   private TestEntityManager entityManager;
@@ -40,10 +39,12 @@ public class RaceRepositoryTest {
         () -> assertEquals(found.getRaceInfo().getPrizePool(), race.getRaceInfo().getPrizePool()),
         () -> assertEquals(found.getDriver1().getDriverId(), race.getDriver1().getDriverId()),
         () -> assertEquals(found.getDriver1().getCarId(), race.getDriver1().getCarId()),
-        () -> assertEquals(found.getDriver1().getFinalPosition(), race.getDriver1().getFinalPosition()),
+        () -> assertEquals(found.getDriver1().getFinalPosition(),
+            race.getDriver1().getFinalPosition()),
         () -> assertEquals(found.getDriver2().getDriverId(), race.getDriver2().getDriverId()),
         () -> assertEquals(found.getDriver2().getCarId(), race.getDriver2().getCarId()),
-        () -> assertEquals(found.getDriver2().getFinalPosition(), race.getDriver2().getFinalPosition()));
+        () -> assertEquals(found.getDriver2().getFinalPosition(),
+            race.getDriver2().getFinalPosition()));
   }
 
 }
diff --git a/race/src/test/java/cz/muni/pa165/race/rest/RaceTestUtil.java b/race/src/test/java/cz/muni/pa165/race/rest/RaceTestUtil.java
index aa00c3a76f14478e3e7489363722dd1bc7464732..2a397fe0bee4b9e5b48c4c8a3d1eef82143f1bbd 100644
--- a/race/src/test/java/cz/muni/pa165/race/rest/RaceTestUtil.java
+++ b/race/src/test/java/cz/muni/pa165/race/rest/RaceTestUtil.java
@@ -39,6 +39,11 @@ public class RaceTestUtil {
         .build();
   }
 
+  /**
+   * Get dao race.
+   *
+   * @return dao race.
+   */
   public static RaceDto getDaoRaceDto() {
     return RaceDto.builder()
         .id(1L)
diff --git a/race/src/test/java/cz/muni/pa165/race/rest/SeasonControllerTest.java b/race/src/test/java/cz/muni/pa165/race/rest/SeasonControllerTest.java
index bdd19a820231d2930edb54823f9a6007c6489891..b03b6430f92da70989b8db7be3c70413a6d39b53 100644
--- a/race/src/test/java/cz/muni/pa165/race/rest/SeasonControllerTest.java
+++ b/race/src/test/java/cz/muni/pa165/race/rest/SeasonControllerTest.java
@@ -3,7 +3,6 @@ package cz.muni.pa165.race.rest;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyLong;
 import static org.mockito.BDDMockito.given;
-import org.springframework.boot.test.context.SpringBootTest;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.patch;
@@ -22,6 +21,7 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.mock.mockito.MockBean;
 import org.springframework.http.MediaType;
 import org.springframework.test.web.servlet.MockMvc;
@@ -31,7 +31,7 @@ import org.springframework.test.web.servlet.MockMvc;
  */
 @SpringBootTest
 @AutoConfigureMockMvc
-public class SeasonControllerTest {
+class SeasonControllerTest {
   private String bodyContent = """
           {
           "id": 1,
diff --git a/race/src/test/java/cz/muni/pa165/race/rest/SeasonRepositoryTest.java b/race/src/test/java/cz/muni/pa165/race/rest/SeasonRepositoryTest.java
index 52ac333083eed34f53a47e7536087c26ba7252a6..e8c41ff324f63d4a18bdc114093f94d0b7163136 100644
--- a/race/src/test/java/cz/muni/pa165/race/rest/SeasonRepositoryTest.java
+++ b/race/src/test/java/cz/muni/pa165/race/rest/SeasonRepositoryTest.java
@@ -1,16 +1,17 @@
 package cz.muni.pa165.race.rest;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 import cz.muni.pa165.race.data.model.Season;
 import cz.muni.pa165.race.data.repository.SeasonRepository;
 import org.junit.jupiter.api.Assertions;
-import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
 import org.springframework.boot.test.autoconfigure.orm.jpa.TestEntityManager;
 
 @DataJpaTest
-public class SeasonRepositoryTest {
+class SeasonRepositoryTest {
 
   @Autowired
   private TestEntityManager entityManager;
diff --git a/race/src/test/java/cz/muni/pa165/race/rest/SeasonTestUtil.java b/race/src/test/java/cz/muni/pa165/race/rest/SeasonTestUtil.java
index 13f7b85e2cb0fba6f1b7c87ae5921e7b2a954152..a9ed71b92612d6e65a8a04f099ff873681a5ff2d 100644
--- a/race/src/test/java/cz/muni/pa165/race/rest/SeasonTestUtil.java
+++ b/race/src/test/java/cz/muni/pa165/race/rest/SeasonTestUtil.java
@@ -21,6 +21,11 @@ public class SeasonTestUtil {
         .build();
   }
 
+  /**
+   * get dao season.
+   *
+   * @return dao season.
+   */
   public static SeasonDto getDaoSeasonDto() {
     return SeasonDto.builder()
         .id(1L)