Reproduced issue #693 in a test

Plan/src/test/java/com/djrapitops/plan/system/listeners/bukkit/AFKListenerTest.java

@@ -0,0 +1,67 @@
+package com.djrapitops.plan.system.listeners.bukkit;
+
+import com.djrapitops.plan.system.settings.Settings;
+import org.bukkit.entity.Player;
+import org.bukkit.event.player.PlayerMoveEvent;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.mockito.Mockito;
+import utilities.Teardown;
+import utilities.TestConstants;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doReturn;
+
+/**
+ * Test for {@link AFKListener}
+ *
+ * @author Rsl1122
+ */
+public class AFKListenerTest {
+
+    @BeforeClass
+    public static void setUpClass() {
+        Settings.AFK_THRESHOLD_MINUTES.setTemporaryValue(3);
+    }
+
+    @AfterClass
+    public static void tearDownClass() {
+        Teardown.resetSettingsTempValues();
+    }
+
+    @Test
+    public void testAfkPermissionCallCaching() {
+        AFKListener afkListener = new AFKListener();
+        Collection<Boolean> calls = new ArrayList<>();
+
+        Player player = mockPlayer(calls);
+        PlayerMoveEvent event = mockMoveEvent(player);
+
+        afkListener.onMove(event);
+        assertEquals(1, calls.size());
+        afkListener.onMove(event);
+        assertEquals(1, calls.size());
+    }
+
+    private PlayerMoveEvent mockMoveEvent(Player player) {
+        PlayerMoveEvent event = Mockito.mock(PlayerMoveEvent.class);
+        doReturn(player).when(event).getPlayer();
+        return event;
+    }
+
+    private Player mockPlayer(Collection<Boolean> calls) {
+        Player player = Mockito.mock(Player.class);
+        doReturn(TestConstants.PLAYER_ONE_UUID).when(player).getUniqueId();
+        doAnswer(perm -> {
+            calls.add(true);
+            return true;
+        }).when(player).hasPermission(Mockito.anyString());
+        return player;
+    }
+
+}