Fix style and tests

core/src/main/java/nl/tudelft/ewi/auta/core/security/SecurityAgent.java

@@ -14,7 +14,6 @@ import org.springframework.stereotype.Service;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.nio.file.attribute.PosixFilePermission;
 import java.sql.SQLException;
 import java.util.ArrayList;

core/src/test/java/nl/tudelft/ewi/auta/core/security/SecurityAgentTest.java

@@ -6,6 +6,7 @@ import nl.tudelft.ewi.auta.core.authentication.database.DatabaseConnection;
 import nl.tudelft.ewi.auta.core.authentication.database.DatabaseConnector;
 import nl.tudelft.ewi.auta.core.authentication.PasswordHasher;
 import nl.tudelft.ewi.auta.core.settings.GlobalSettings;
+import nl.tudelft.ewi.auta.core.settings.SettingKey;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -40,7 +41,7 @@ public class SecurityAgentTest {
         Mockito.when(this.connector.connect()).thenReturn(this.connection);
 
         this.dbPath = Files.createTempFile("auta", "test");
-        this.settings.put("authentication database path", this.dbPath.toString());
+        this.settings.put(SettingKey.AUTHENTICATION_DATABASE_LOCATION, this.dbPath.toString());
 
         this.agent = new SecurityAgent(this.connector, this.hasher, this.settings);
     }