Currency instances

build.sbt

@@ -119,6 +119,7 @@ lazy val kernelLaws = crossProject(JSPlatform, JVMPlatform, NativePlatform)
   .settings(testingDependencies)
   .jsSettings(commonJsSettings)
   .jvmSettings(commonJvmSettings)
+  .jvmSettings(libraryDependencies += "org.scala-lang.modules" %% "scala-collection-compat" % "2.11.0" % Test)
   .nativeSettings(commonNativeSettings)
 
 lazy val algebraSettings = Seq[Setting[?]](

core/src/main/scala-2.12/cats/instances/all.scala

@@ -33,6 +33,7 @@ abstract class AllInstancesBinCompat
     with AllInstancesBinCompat6
     with AllInstancesBinCompat7
     with AllInstancesBinCompat8
+    with AllInstancesBinCompat10
 
 trait AllInstances
     extends AnyValInstances
@@ -94,3 +95,5 @@ trait AllInstancesBinCompat7 extends SeqInstances
 trait AllInstancesBinCompat8 extends DeadlineInstances
 
 trait AllInstancesBinCompat9 extends InvariantInstances with InvariantInstancesBinCompat0
+
+trait AllInstancesBinCompat10 extends CurrencyInstances

core/src/main/scala-2.13+/cats/instances/all.scala

@@ -34,6 +34,7 @@ abstract class AllInstancesBinCompat
     with AllInstancesBinCompat7
     with AllInstancesBinCompat8
     with AllInstancesBinCompat9
+    with AllInstancesBinCompat11
 
 trait AllInstances
     extends AnyValInstances
@@ -99,3 +100,5 @@ trait AllInstancesBinCompat8 extends InvariantInstances
 trait AllInstancesBinCompat9 extends DeadlineInstances
 
 trait AllInstancesBinCompat10 extends InvariantInstancesBinCompat0
+
+trait AllInstancesBinCompat11 extends CurrencyInstances

core/src/main/scala/cats/instances/currency.scala

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2015 Typelevel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package cats
+package instances
+
+import java.util.Currency
+
+trait CurrencyInstances extends cats.kernel.instances.CurrencyInstances {
+  implicit val catsStdShowForCurrency: Show[Currency] = Show.fromToString[Currency]
+}

kernel-laws/jvm/src/test/scala/cats/kernel/laws/JvmLawTests.scala

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2015 Typelevel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package cats.kernel
+package laws
+
+import cats.kernel.instances.currency.*
+import cats.kernel.laws.discipline.*
+import munit.DisciplineSuite
+import java.util.Currency
+import org.scalacheck.{Arbitrary, Cogen, Gen}
+import scala.jdk.CollectionConverters.*
+
+class JvmLawTests extends TestsConfig with DisciplineSuite {
+  implicit private val arbitraryCurrency: Arbitrary[Currency] = Arbitrary(
+    Gen.oneOf(Currency.getAvailableCurrencies().asScala)
+  )
+  implicit private val cogenCurrency: Cogen[Currency] = Cogen[String].contramap(_.getCurrencyCode())
+
+  checkAll("Eq[Currency]", EqTests[Currency].eqv)
+  checkAll("Hash[Currency]", HashTests[Currency].hash)
+}

kernel/src/main/scala-2.12/cats/kernel/instances/AllInstances.scala

@@ -60,3 +60,5 @@ private[instances] trait AllInstancesBinCompat0 extends FiniteDurationInstances
 private[instances] trait AllInstancesBinCompat1 extends SortedMapInstances with SortedSetInstances
 
 private[instances] trait AllInstancesBinCompat2 extends DeadlineInstances
+
+private[instances] trait AllInstancesBinCompat3 extends CurrencyInstances

kernel/src/main/scala-2.13+/cats/kernel/instances/AllInstances.scala

@@ -62,3 +62,5 @@ private[instances] trait AllInstancesBinCompat0 extends FiniteDurationInstances
 private[instances] trait AllInstancesBinCompat1 extends SortedMapInstances with SortedSetInstances
 
 private[instances] trait AllInstancesBinCompat2 extends DeadlineInstances
+
+private[instances] trait AllInstancesBinCompat3 extends CurrencyInstances

kernel/src/main/scala/cats/kernel/instances/CurrencyInstances.scala

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2015 Typelevel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package cats.kernel
+package instances
+
+import java.util.Currency
+
+trait CurrencyInstances {
+  implicit def catsKernelStdHashForCurrency: Hash[Currency] = new CurrencyHash
+}
+
+class CurrencyHash extends Hash[Currency] {
+  override def eqv(x: Currency, y: Currency): Boolean = x.getCurrencyCode().equals(y.getCurrencyCode())
+  override def hash(x: Currency): Int = x.getCurrencyCode().hashCode()
+}

kernel/src/main/scala/cats/kernel/instances/all/package.scala

@@ -27,3 +27,4 @@ package object all
     with AllInstancesBinCompat0
     with AllInstancesBinCompat1
     with AllInstancesBinCompat2
+    with AllInstancesBinCompat3

kernel/src/main/scala/cats/kernel/instances/currency/package.scala

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2015 Typelevel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package cats.kernel
+package instances
+
+package object currency extends CurrencyInstances