✅ Add tests to AppLanguage

Signed-off-by: Leonardo Colman Lopes <[email protected]>

app/src/test/kotlin/br/com/colman/petals/settings/AppLanguageTest.kt

@@ -0,0 +1,73 @@
+package br.com.colman.petals.settings
+
+import io.kotest.core.spec.style.FunSpec
+import io.kotest.datatest.withData
+import io.kotest.matchers.shouldBe
+
+class AppLanguageTest : FunSpec({
+  context("getAppLanguageName") {
+    withData(
+      nameFn = { (code, name) -> "for code '$code' returns '$name'" },
+      "de" to "Deutsch",
+      "en" to "English",
+      "fr" to "Français",
+      "es" to "Español",
+      "it" to "Italiano",
+      "nl" to "Nederlands",
+      "no" to "Norsk",
+      "pt" to "Português",
+      "ru" to "Русский",
+      "tr" to "Türkçe",
+      "uk" to "Українськ",
+    ) { (code, expectedName) ->
+      AppLanguage.getAppLanguageName(code) shouldBe expectedName
+    }
+
+    context("edge cases") {
+      test("invalid code returns English default") {
+        AppLanguage.getAppLanguageName("xx") shouldBe "English"
+      }
+
+      test("empty code returns English default") {
+        AppLanguage.getAppLanguageName("") shouldBe "English"
+      }
+
+      test("case-sensitive - uppercase code returns English") {
+        AppLanguage.getAppLanguageName("DE") shouldBe "English"
+      }
+    }
+  }
+
+  context("getAppLanguageCode") {
+    withData(
+      nameFn = { (name, code) -> "for name '$name' returns '$code'" },
+      "Deutsch" to "de",
+      "English" to "en",
+      "Français" to "fr",
+      "Español" to "es",
+      "Italiano" to "it",
+      "Nederlands" to "nl",
+      "Norsk" to "no",
+      "Português" to "pt",
+      "Русский" to "ru",
+      "Türkçe" to "tr",
+      "Українськ" to "uk",
+    ) { (languageName, expectedCode) ->
+      AppLanguage.getAppLanguageCode(languageName) shouldBe expectedCode
+    }
+
+    context("edge cases") {
+      test("invalid name returns English code") {
+        AppLanguage.getAppLanguageCode("Klingon") shouldBe "en"
+      }
+
+      test("empty name returns English code") {
+        AppLanguage.getAppLanguageCode("") shouldBe "en"
+      }
+
+      test("case-sensitive - lowercase name returns English") {
+        AppLanguage.getAppLanguageCode("deutsch") shouldBe "en"
+      }
+    }
+  }
+})