refactor: add Android adapters to java.util.Locale

Author: aartiPl

build.gradle.kts

@@ -30,7 +30,7 @@ fun calculateVersion(baseVersion: String): String {
 }
 
 group = "net.igsoft.polyglot"
-version = calculateVersion("0.3.0")
+version = calculateVersion("0.3.1")
 
 println("Version: $version")
 

polyglot-core/build.gradle.kts

@@ -11,6 +11,7 @@ kotlin {
         namespace = "net.igsoft.polyglot.core"
         compileSdk = 37
         minSdk = 23
+        withHostTest {}
         compilerOptions {
             jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17)
         }

polyglot-core/src/androidHostTest/kotlin/net/igsoft/polyglot/core/MsgLocaleAndroidTest.kt

@@ -0,0 +1,23 @@
+package net.igsoft.polyglot.core
+
+import java.util.Locale
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class MsgLocaleAndroidTest {
+
+    @Test
+    fun `Given French locale when converting to message locale then preserve language tag`() {
+        assertEquals(MsgLocale.of("fr-FR"), Locale.forLanguageTag("fr-FR").toMsgLocale())
+    }
+
+    @Test
+    fun `Given French message locale when converting to Java locale then preserve language tag`() {
+        assertEquals(Locale.forLanguageTag("fr-FR"), MsgLocale.of("fr-FR").toJavaLocale())
+    }
+
+    @Test
+    fun `Given German locale when creating message locale then preserve language tag`() {
+        assertEquals(MsgLocale.of("de"), MsgLocale.of(Locale.GERMAN))
+    }
+}

polyglot-core/src/androidMain/kotlin/net/igsoft/polyglot/core/MsgLocaleAndroid.kt

@@ -0,0 +1,9 @@
+package net.igsoft.polyglot.core
+
+import java.util.Locale
+
+fun MsgLocale.Companion.of(locale: Locale): MsgLocale = MsgLocale.of(locale.toLanguageTag())
+
+fun Locale.toMsgLocale(): MsgLocale = MsgLocale.of(this)
+
+fun MsgLocale.toJavaLocale(): Locale = Locale.forLanguageTag(languageTag)

polyglot-core/src/commonMain/kotlin/net/igsoft/polyglot/core/MsgLocales.kt

@@ -12,4 +12,9 @@ object MsgLocales {
 
     val PL_PL: MsgLocale
         get() = MsgLocale.of("pl-PL")
+
+    val DE get() = MsgLocale.of("de")
+    val ES get() = MsgLocale.of("es")
+    val FR get() = MsgLocale.of("fr")
+    val IT get() = MsgLocale.of("it")
 }