test: Add i18n test-case

5 files changed, 600 insertions, 0 deletions

diff --git a/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/LanguageManagerTest.kt b/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/LanguageManagerTest.kt
new file mode 100644
index 0000000..158d985
--- /dev/null
+++ b/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/LanguageManagerTest.kt
@@ -0,0 +1,308 @@
+package dev.m1sk9.lunaticChat.paper.i18n
+
+import java.io.InputStream
+import java.util.logging.Logger
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertNotNull
+import kotlin.test.assertTrue
+
+/**
+ * Test for LanguageManager using test resources.
+ */
+class LanguageManagerTest {
+    /**
+     * Mock Logger that collects log messages.
+     */
+    private class TestLogger : Logger("test", null) {
+        val infoMessages = mutableListOf<String>()
+        val warningMessages = mutableListOf<String>()
+
+        override fun info(msg: String) {
+            infoMessages.add(msg)
+        }
+
+        override fun warning(msg: String) {
+            warningMessages.add(msg)
+        }
+    }
+
+    /**
+     * Resource loader that loads files from test classpath.
+     */
+    private val testResourceLoader: (String) -> InputStream? = { path ->
+        this::class.java.classLoader.getResourceAsStream(path)
+    }
+
+    private fun createLanguageManager(language: Language): Pair<LanguageManager, TestLogger> {
+        val logger = TestLogger()
+        val manager =
+            LanguageManager(
+                plugin = null,
+                logger = logger,
+                selectedLanguage = language,
+                resourceLoader = testResourceLoader,
+            )
+        return Pair(manager, logger)
+    }
+
+    @Test
+    fun `initialize should load English language file`() {
+        val (manager, logger) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        assertTrue(logger.infoMessages.any { it.contains("en.yml") })
+    }
+
+    @Test
+    fun `initialize should load Japanese language file`() {
+        val (manager, logger) = createLanguageManager(Language.JA)
+        manager.initialize()
+
+        assertTrue(logger.infoMessages.any { it.contains("ja.yml") })
+    }
+
+    @Test
+    fun `initialize should load both language files`() {
+        val (manager, logger) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        // Both en.yml and ja.yml should be loaded
+        assertTrue(logger.infoMessages.any { it.contains("en.yml") })
+        assertTrue(logger.infoMessages.any { it.contains("ja.yml") })
+    }
+
+    @Test
+    fun `getMessage should return English message for EN language`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val message = manager.getMessage("commandDescription.tell")
+        assertEquals("Send a direct message to another player", message)
+    }
+
+    @Test
+    fun `getMessage should return Japanese message for JA language`() {
+        val (manager, _) = createLanguageManager(Language.JA)
+        manager.initialize()
+
+        val message = manager.getMessage("commandDescription.tell")
+        assertEquals("他のプレイヤーにダイレクトメッセージを送信します", message)
+    }
+
+    @Test
+    fun `getMessage should handle nested keys with dot notation`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val onMessage = manager.getMessage("toggle.on")
+        val offMessage = manager.getMessage("toggle.off")
+
+        assertEquals("Enabled", onMessage)
+        assertEquals("Disabled", offMessage)
+    }
+
+    @Test
+    fun `getMessage should substitute placeholders`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val message =
+            manager.getMessage(
+                "tellTargetOffline",
+                mapOf("target" to "Steve"),
+            )
+
+        assertEquals("Player 'Steve' is currently offline.", message)
+    }
+
+    @Test
+    fun `getMessage should substitute multiple placeholders`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val message =
+            manager.getMessage(
+                "directMessageNoticeToggle",
+                mapOf("toggle" to "Enabled"),
+            )
+
+        assertEquals("Direct message notifications have been set to Enabled", message)
+    }
+
+    @Test
+    fun `getMessage should handle Japanese placeholders`() {
+        val (manager, _) = createLanguageManager(Language.JA)
+        manager.initialize()
+
+        val message =
+            manager.getMessage(
+                "tellTargetOffline",
+                mapOf("target" to "太郎"),
+            )
+
+        assertEquals("プレイヤー '太郎' は現在オフラインです。", message)
+    }
+
+    @Test
+    fun `getMessage should return key when message not found`() {
+        val (manager, logger) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val message = manager.getMessage("nonexistent.key")
+
+        assertEquals("nonexistent.key", message)
+        assertTrue(logger.warningMessages.any { it.contains("Message key not found: nonexistent.key") })
+    }
+
+    @Test
+    fun `getMessage should handle empty placeholders map`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val message = manager.getMessage("playerOnlyCommand", emptyMap())
+
+        assertEquals("This command can only be executed by players.", message)
+    }
+
+    @Test
+    fun `getToggleText should return 'on' text when enabled`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val text = manager.getToggleText(true)
+
+        assertEquals("Enabled", text)
+    }
+
+    @Test
+    fun `getToggleText should return 'off' text when disabled`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val text = manager.getToggleText(false)
+
+        assertEquals("Disabled", text)
+    }
+
+    @Test
+    fun `getToggleText should return Japanese text for JA language`() {
+        val (manager, _) = createLanguageManager(Language.JA)
+        manager.initialize()
+
+        val onText = manager.getToggleText(true)
+        val offText = manager.getToggleText(false)
+
+        assertEquals("有効", onText)
+        assertEquals("無効", offText)
+    }
+
+    @Test
+    fun `getMessage should retrieve all command descriptions`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val commands = listOf("tell", "reply", "jp", "notice")
+        commands.forEach { command ->
+            val message = manager.getMessage("commandDescription.$command")
+            assertNotNull(message)
+            assertTrue(message.isNotEmpty())
+        }
+    }
+
+    @Test
+    fun `getMessage should retrieve all standard messages`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val keys =
+            listOf(
+                "playerOnlyCommand",
+                "replyTargetNotFound",
+                "tellYourself",
+            )
+
+        keys.forEach { key ->
+            val message = manager.getMessage(key)
+            assertNotNull(message)
+            assertTrue(message.isNotEmpty())
+        }
+    }
+
+    @Test
+    fun `getMessage should handle placeholder not provided`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        // Get message with placeholder but don't provide value
+        val message = manager.getMessage("tellTargetOffline")
+
+        // Should still return message with placeholder intact
+        assertEquals("Player '{target}' is currently offline.", message)
+    }
+
+    @Test
+    fun `initialize should log number of loaded keys`() {
+        val (manager, logger) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        // Should log number of keys for each language file
+        assertTrue(logger.infoMessages.any { it.contains("keys)") })
+    }
+
+    @Test
+    fun `getMessage should be case sensitive for keys`() {
+        val (manager, logger) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val message = manager.getMessage("PlayerOnlyCommand") // Wrong case
+
+        assertEquals("PlayerOnlyCommand", message) // Should return key as-is
+        assertTrue(logger.warningMessages.any { it.contains("Message key not found") })
+    }
+
+    @Test
+    fun `getMessage should handle special characters in placeholder values`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        val message =
+            manager.getMessage(
+                "tellTargetOffline",
+                mapOf("target" to "Player@123!"),
+            )
+
+        assertEquals("Player 'Player@123!' is currently offline.", message)
+    }
+
+    @Test
+    fun `getMessage should replace all occurrences of placeholder`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        // Create a message with the same placeholder multiple times (if such exists)
+        val message =
+            manager.getMessage(
+                "directMessageNoticeToggle",
+                mapOf("toggle" to "ON"),
+            )
+
+        // Should replace the placeholder
+        assertTrue(message.contains("ON"))
+    }
+
+    @Test
+    fun `flattened keys should handle nested structure correctly`() {
+        val (manager, _) = createLanguageManager(Language.EN)
+        manager.initialize()
+
+        // Verify that nested keys work
+        val commandTell = manager.getMessage("commandDescription.tell")
+        val toggleOn = manager.getMessage("toggle.on")
+
+        assertNotNull(commandTell)
+        assertNotNull(toggleOn)
+        assertTrue(commandTell.isNotEmpty())
+        assertTrue(toggleOn.isNotEmpty())
+    }
+}
diff --git a/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/LanguageTest.kt b/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/LanguageTest.kt
new file mode 100644
index 0000000..c8b2c3b
--- /dev/null
+++ b/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/LanguageTest.kt
@@ -0,0 +1,75 @@
+package dev.m1sk9.lunaticChat.paper.i18n
+
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class LanguageTest {
+    @Test
+    fun `should have correct code for EN`() {
+        assertEquals("en", Language.EN.code)
+    }
+
+    @Test
+    fun `should have correct code for JA`() {
+        assertEquals("ja", Language.JA.code)
+    }
+
+    @Test
+    fun `should have correct fileName for EN`() {
+        assertEquals("en.yml", Language.EN.fileName)
+    }
+
+    @Test
+    fun `should have correct fileName for JA`() {
+        assertEquals("ja.yml", Language.JA.fileName)
+    }
+
+    @Test
+    fun `fromCode should return EN for 'en'`() {
+        assertEquals(Language.EN, Language.fromCode("en"))
+    }
+
+    @Test
+    fun `fromCode should return JA for 'ja'`() {
+        assertEquals(Language.JA, Language.fromCode("ja"))
+    }
+
+    @Test
+    fun `fromCode should be case insensitive for EN`() {
+        assertEquals(Language.EN, Language.fromCode("EN"))
+        assertEquals(Language.EN, Language.fromCode("En"))
+        assertEquals(Language.EN, Language.fromCode("eN"))
+    }
+
+    @Test
+    fun `fromCode should be case insensitive for JA`() {
+        assertEquals(Language.JA, Language.fromCode("JA"))
+        assertEquals(Language.JA, Language.fromCode("Ja"))
+        assertEquals(Language.JA, Language.fromCode("jA"))
+    }
+
+    @Test
+    fun `fromCode should fallback to EN for unknown code`() {
+        assertEquals(Language.EN, Language.fromCode("unknown"))
+        assertEquals(Language.EN, Language.fromCode("fr"))
+        assertEquals(Language.EN, Language.fromCode("de"))
+        assertEquals(Language.EN, Language.fromCode(""))
+    }
+
+    @Test
+    fun `fromCode should fallback to EN for empty string`() {
+        assertEquals(Language.EN, Language.fromCode(""))
+    }
+
+    @Test
+    fun `should have exactly two language entries`() {
+        assertEquals(2, Language.entries.size)
+    }
+
+    @Test
+    fun `entries should contain EN and JA`() {
+        val entries = Language.entries
+        assertEquals(true, entries.contains(Language.EN))
+        assertEquals(true, entries.contains(Language.JA))
+    }
+}
diff --git a/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/MessageFormatterTest.kt b/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/MessageFormatterTest.kt
new file mode 100644
index 0000000..04ef02a
--- /dev/null
+++ b/platform-paper/src/test/kotlin/dev/m1sk9/lunaticChat/paper/i18n/MessageFormatterTest.kt
@@ -0,0 +1,181 @@
+package dev.m1sk9.lunaticChat.paper.i18n
+
+import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class MessageFormatterTest {
+    private val plainSerializer = PlainTextComponentSerializer.plainText()
+
+    @Test
+    fun `format should add LC prefix`() {
+        val result = MessageFormatter.format("test message")
+        val plainText = plainSerializer.serialize(result)
+        assertTrue(plainText.startsWith("[LC] "))
+    }
+
+    @Test
+    fun `format should include message text`() {
+        val result = MessageFormatter.format("test message")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] test message", plainText)
+    }
+
+    @Test
+    fun `format should preserve placeholder braces in plain text`() {
+        val result = MessageFormatter.format("Hello {name}")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Hello {name}", plainText)
+    }
+
+    @Test
+    fun `format should handle multiple placeholders`() {
+        val result = MessageFormatter.format("Player {player} sent message to {target}")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Player {player} sent message to {target}", plainText)
+    }
+
+    @Test
+    fun `format should handle message without placeholders`() {
+        val result = MessageFormatter.format("Simple message", highlightPlaceholders = false)
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Simple message", plainText)
+    }
+
+    @Test
+    fun `formatError should add LC prefix`() {
+        val result = MessageFormatter.formatError("error message")
+        val plainText = plainSerializer.serialize(result)
+        assertTrue(plainText.startsWith("[LC] "))
+    }
+
+    @Test
+    fun `formatError should include error message text`() {
+        val result = MessageFormatter.formatError("Something went wrong")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Something went wrong", plainText)
+    }
+
+    @Test
+    fun `formatError should preserve placeholders in plain text`() {
+        val result = MessageFormatter.formatError("Player {player} not found")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Player {player} not found", plainText)
+    }
+
+    @Test
+    fun `formatSuccess should add LC prefix`() {
+        val result = MessageFormatter.formatSuccess("success message")
+        val plainText = plainSerializer.serialize(result)
+        assertTrue(plainText.startsWith("[LC] "))
+    }
+
+    @Test
+    fun `formatSuccess should include success message text`() {
+        val result = MessageFormatter.formatSuccess("Operation completed")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Operation completed", plainText)
+    }
+
+    @Test
+    fun `formatSuccess should preserve placeholders in plain text`() {
+        val result = MessageFormatter.formatSuccess("Setting {setting} enabled")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Setting {setting} enabled", plainText)
+    }
+
+    @Test
+    fun `format should handle empty message`() {
+        val result = MessageFormatter.format("")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] ", plainText)
+    }
+
+    @Test
+    fun `format should handle message with only placeholder`() {
+        val result = MessageFormatter.format("{value}")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] {value}", plainText)
+    }
+
+    @Test
+    fun `format should handle nested braces`() {
+        val result = MessageFormatter.format("{{nested}}")
+        val plainText = plainSerializer.serialize(result)
+        // Only {nested} should be treated as placeholder, outer braces are literal
+        assertTrue(plainText.contains("{nested}"))
+    }
+
+    @Test
+    fun `format should handle Japanese text`() {
+        val result = MessageFormatter.format("こんにちは {name}")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] こんにちは {name}", plainText)
+    }
+
+    @Test
+    fun `formatError should handle Japanese text`() {
+        val result = MessageFormatter.formatError("エラーが発生しました")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] エラーが発生しました", plainText)
+    }
+
+    @Test
+    fun `formatSuccess should handle Japanese text`() {
+        val result = MessageFormatter.formatSuccess("設定を有効にしました")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] 設定を有効にしました", plainText)
+    }
+
+    @Test
+    fun `format should handle very long message`() {
+        val longMessage = "a".repeat(1000)
+        val result = MessageFormatter.format(longMessage)
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] $longMessage", plainText)
+    }
+
+    @Test
+    fun `format should handle special characters`() {
+        val result = MessageFormatter.format("Special: !@#$%^&*()")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Special: !@#$%^&*()", plainText)
+    }
+
+    @Test
+    fun `format should handle message with newlines`() {
+        val result = MessageFormatter.format("Line 1\nLine 2")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Line 1\nLine 2", plainText)
+    }
+
+    @Test
+    fun `format should handle unclosed brace`() {
+        val result = MessageFormatter.format("Unclosed {placeholder")
+        val plainText = plainSerializer.serialize(result)
+        // Unclosed braces should not be treated as placeholders
+        assertEquals("[LC] Unclosed {placeholder", plainText)
+    }
+
+    @Test
+    fun `format should handle placeholder at start`() {
+        val result = MessageFormatter.format("{player} joined the game")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] {player} joined the game", plainText)
+    }
+
+    @Test
+    fun `format should handle placeholder at end`() {
+        val result = MessageFormatter.format("Welcome {player}")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] Welcome {player}", plainText)
+    }
+
+    @Test
+    fun `format should handle consecutive placeholders`() {
+        val result = MessageFormatter.format("{player1}{player2}")
+        val plainText = plainSerializer.serialize(result)
+        assertEquals("[LC] {player1}{player2}", plainText)
+    }
+}
diff --git a/platform-paper/src/test/resources/languages/en.yml b/platform-paper/src/test/resources/languages/en.yml
new file mode 100644
index 0000000..b7d2223
--- /dev/null
+++ b/platform-paper/src/test/resources/languages/en.yml
@@ -0,0 +1,18 @@
+commandDescription:
+  tell: "Send a direct message to another player"
+  reply: "Reply to the player who last sent/received a direct message"
+  jp: "Toggle romaji-to-kana conversion on/off"
+  notice: "Toggle direct message notifications on/off"
+
+directMessageNoticeStatus: "Direct message notifications are currently {toggle}"
+directMessageNoticeToggle: "Direct message notifications have been set to {toggle}"
+playerOnlyCommand: "This command can only be executed by players."
+replyTargetNotFound: "Reply target player not found."
+romajiConversionToggle: "Romaji-to-kana conversion has been set to {toggle}"
+romajiConversionStatus: "Romaji-to-kana conversion is currently {toggle}"
+tellTargetOffline: "Player '{target}' is currently offline."
+tellYourself: "You cannot send a message to yourself."
+
+toggle:
+  off: "Disabled"
+  on: "Enabled"
diff --git a/platform-paper/src/test/resources/languages/ja.yml b/platform-paper/src/test/resources/languages/ja.yml
new file mode 100644
index 0000000..9588375
--- /dev/null
+++ b/platform-paper/src/test/resources/languages/ja.yml
@@ -0,0 +1,18 @@
+commandDescription:
+  tell: "他のプレイヤーにダイレクトメッセージを送信します"
+  reply: "最後にダイレクトメッセージを送受信したプレイヤーに返信します"
+  jp: "ローマ字→かな変換のオン/オフを切り替えます"
+  notice: "ダイレクトメッセージ通知のオン/オフを切り替えます"
+
+directMessageNoticeStatus: "ダイレクトメッセージ通知は現在 {toggle} です"
+directMessageNoticeToggle: "ダイレクトメッセージ通知を {toggle} に設定しました"
+playerOnlyCommand: "このコマンドはプレイヤーのみが実行できます。"
+replyTargetNotFound: "返信先のプレイヤーが見つかりませんでした。"
+romajiConversionToggle: "ローマ字→かな変換を {toggle} に設定しました"
+romajiConversionStatus: "ローマ字→かな変換は現在 {toggle} です"
+tellTargetOffline: "プレイヤー '{target}' は現在オフラインです。"
+tellYourself: "自分自身にメッセージを送信することはできません。"
+
+toggle:
+  off: "無効"
+  on: "有効"