test: addPlayerToTeam extended tests

src/test/java/cz/muni/fi/pa165/icehockeymanager/services/TeamServiceImplTest.java

@@ -2,6 +2,7 @@ package cz.muni.fi.pa165.icehockeymanager.services;
 
 import cz.muni.fi.pa165.icehockeymanager.config.ApplicationConfig;
 import cz.muni.fi.pa165.icehockeymanager.dao.TeamDao;
+import cz.muni.fi.pa165.icehockeymanager.exceptions.PlayerNotInTeamException;
 import cz.muni.fi.pa165.icehockeymanager.model.Player;
 import cz.muni.fi.pa165.icehockeymanager.model.Team;
 import org.junit.jupiter.api.Test;
@@ -14,6 +15,7 @@ import org.springframework.test.context.junit.jupiter.SpringExtension;
 import java.util.*;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
@@ -72,6 +74,25 @@ class TeamServiceImplTest {
         verify(teamDao).update(team);
     }
 
+    @Test
+    public void addPlayerToTeamPlayerIsNull() {
+        Team team = buildTeam("Florida Panthers");
+        var players = buildPlayers();
+        team.setPlayers(players);
+        assertThatExceptionOfType(NullPointerException.class).isThrownBy(
+            () -> teamService.addPlayerToTeam(team, null)
+        );
+        assertThat(team.getPlayers()).hasSameElementsAs(players);
+    }
+
+    @Test
+    public void addPlayerToTeamTeamIsNull() {
+        var player = buildPlayer(1L, "Stan Mikita");
+        assertThatExceptionOfType(NullPointerException.class).isThrownBy(
+                () -> teamService.addPlayerToTeam(null,player)
+        );
+    }
+