Add unit test for language manager

Signed-off-by: trivernis <trivernis@protonmail.com>

build.gradle

@@ -97,5 +97,7 @@ compileTestKotlin {
         implementation group: 'junit', name: 'junit', version: '4.12'
         implementation 'com.github.seeseemelk:MockBukkit:v1.16-SNAPSHOT'
         implementation 'io.kotest:kotest-runner-junit5:4.3.2'
+        implementation 'io.mockk:mockk:1.10.6'
+        implementation "org.dynmap:dynmap-api:2.0"
     }
 }

src/main/kotlin/net/trivernis/chunkmaster/Chunkmaster.kt

@@ -6,12 +6,16 @@ import net.trivernis.chunkmaster.lib.LanguageManager
 import net.trivernis.chunkmaster.lib.database.SqliteManager
 import net.trivernis.chunkmaster.lib.generation.GenerationManager
 import org.bstats.bukkit.Metrics
+import org.bukkit.plugin.PluginDescriptionFile
 import org.bukkit.plugin.java.JavaPlugin
+import org.bukkit.plugin.java.JavaPluginLoader
 import org.bukkit.scheduler.BukkitTask
 import org.dynmap.DynmapAPI
+import java.io.File
 import java.lang.IllegalStateException
+import javax.annotation.ParametersAreNonnullByDefault
 
-class Chunkmaster : JavaPlugin() {
+open class Chunkmaster : JavaPlugin() {
     lateinit var sqliteManager: SqliteManager
     lateinit var generationManager: GenerationManager
     lateinit var langManager: LanguageManager

src/test/kotlin/net/trivernis/chunkmaster/LanguageManagerTest.kt

@@ -0,0 +1,28 @@
+package net.trivernis.chunkmaster
+import io.kotest.matchers.string.shouldNotBeEmpty
+import io.mockk.every
+import io.mockk.mockk
+import net.trivernis.chunkmaster.lib.LanguageManager
+import org.bukkit.configuration.file.FileConfiguration
+import org.junit.Test
+
+class LanguageManagerTest {
+    private var langManager: LanguageManager
+
+    init {
+        val plugin = mockk<Chunkmaster>()
+        val config = mockk<FileConfiguration>()
+
+        every {plugin.dataFolder} returns createTempDir()
+        every {plugin.config} returns config
+        every {config.getString("language")} returns "en"
+
+        langManager = LanguageManager(plugin)
+        langManager.loadProperties()
+    }
+
+    @Test
+    fun `it returns localized for a key`() {
+        langManager.getLocalized("NOT_PAUSED").shouldNotBeEmpty()
+    }
+}