Implement tests for WorldNameChecker class

src/test/java/org/mvplugins/multiverse/core/world/WorldNameCheckerTest.kt

@@ -0,0 +1,61 @@
+package org.mvplugins.multiverse.core.world
+
+import org.bukkit.Bukkit
+import org.mvplugins.multiverse.core.TestWithMockBukkit
+import java.io.File
+import kotlin.test.BeforeTest
+import kotlin.test.Test
+import kotlin.test.*
+
+class WorldNameCheckerTest : TestWithMockBukkit() {
+
+    lateinit var worldNameChecker: WorldNameChecker
+
+    @BeforeTest
+    fun setUp() {
+        worldNameChecker = serviceLocator.getActiveService(WorldNameChecker::class.java).takeIf { it != null } ?: run {
+            throw IllegalStateException("WorldNameChecker is not available as a service") }
+    }
+
+    @Test
+    fun `Valid world name`() {
+        assertEquals(WorldNameChecker.NameStatus.VALID, worldNameChecker.checkName("test"))
+    }
+
+    @Test
+    fun `Invalid characters in world name`() {
+        assertEquals(WorldNameChecker.NameStatus.INVALID_CHARS, worldNameChecker.checkName("test!"))
+    }
+
+    @Test
+    fun `Empty world name`() {
+        assertEquals(WorldNameChecker.NameStatus.EMPTY, worldNameChecker.checkName(null))
+        assertEquals(WorldNameChecker.NameStatus.EMPTY, worldNameChecker.checkName(""))
+    }
+
+    @Test
+    fun `Blacklisted world name`() {
+        assertEquals(WorldNameChecker.NameStatus.BLACKLISTED, worldNameChecker.checkName("logs"))
+        assertEquals(WorldNameChecker.NameStatus.BLACKLISTED, worldNameChecker.checkName("plugins"))
+    }
+
+    @Test
+    fun `Valid world folder`() {
+        File(Bukkit.getWorldContainer(), "test").mkdir()
+        File(Bukkit.getWorldContainer(), "test/level.dat").createNewFile()
+        assertEquals(WorldNameChecker.FolderStatus.VALID, worldNameChecker.checkFolder("test"))
+    }
+
+    @Test
+    fun `Not a valid world folder`() {
+        File(Bukkit.getWorldContainer(), "test").mkdir()
+        File(Bukkit.getWorldContainer(), "test/random.txt").createNewFile()
+        assertEquals(WorldNameChecker.FolderStatus.NOT_A_WORLD, worldNameChecker.checkFolder("test"))
+    }
+
+    @Test
+    fun `World folder does not exist`() {
+        File(Bukkit.getWorldContainer(), "test").mkdir()
+        assertEquals(WorldNameChecker.FolderStatus.DOES_NOT_EXIST, worldNameChecker.checkFolder("test2"))
+    }
+}