Added serializer for java.util.currency and typeAlias

ks3-jdk/src/jvmMain/kotlin/io/ks3/java/typealiases/Typealiases.kt

@@ -12,6 +12,7 @@ import io.ks3.java.time.LocalDateTimeAsStringSerializer
 import io.ks3.java.time.LocalTimeAsStringSerializer
 import io.ks3.java.time.OffsetDateTimeAsStringSerializer
 import io.ks3.java.time.YearMonthAsStringSerializer
+import io.ks3.java.util.CurrencySerializer
 import io.ks3.java.util.LocaleSerializer
 import io.ks3.java.util.UuidSerializer
 import kotlinx.serialization.Serializable
@@ -24,6 +25,7 @@ import java.time.LocalDateTime
 import java.time.LocalTime
 import java.time.OffsetDateTime
 import java.time.YearMonth
+import java.util.Currency
 import java.util.Locale
 import java.util.UUID
 
@@ -78,3 +80,7 @@ typealias LocaleAsString =
 typealias UuidAsString =
    @Serializable(with = UuidSerializer::class)
    UUID
+
+typealias CurrencyAsString =
+   @Serializable(with = CurrencySerializer::class)
+   Currency

ks3-jdk/src/jvmMain/kotlin/io/ks3/java/util/CurrencySerializer.kt

@@ -0,0 +1,7 @@
+package io.ks3.java.util
+
+import io.ks3.standard.stringSerializer
+import kotlinx.serialization.KSerializer
+import java.util.Currency
+
+object CurrencySerializer : KSerializer<Currency> by stringSerializer(Currency::getInstance)

ks3-jdk/src/jvmTest/kotlin/io/ks3/java/util/CurrencySerializerTest.kt

@@ -0,0 +1,25 @@
+package io.ks3.java.util
+
+import io.kotest.core.spec.style.FreeSpec
+import io.kotest.matchers.shouldBe
+import io.kotest.property.Arb
+import io.kotest.property.arbitrary.map
+import io.kotest.property.arbitrary.of
+import io.ks3.test.generateSerializerTests
+import kotlinx.serialization.json.Json
+import java.util.Currency
+
+class CurrencySerializerTest :
+   FreeSpec(
+      {
+         include(
+            generateSerializerTests(
+               CurrencySerializer,
+               Arb.of(Currency.getAvailableCurrencies()).map { it },
+            ),
+         )
+         "sample" {
+            Json.encodeToString(CurrencySerializer, Currency.getInstance("AUD")) shouldBe "\"AUD\""
+         }
+      },
+   )