Update ScalaTest and ScalaCheck versions

build.sbt

@@ -86,8 +86,8 @@ lazy val msgpackCore = Project(id = "msgpack-core", base = file("msgpack-core"))
     libraryDependencies ++= Seq(
       // msgpack-core should have no external dependencies
       junitInterface,
-      "org.scalatest"     %% "scalatest"    % "3.0.8"  % "test",
-      "org.scalacheck"    %% "scalacheck"   % "1.14.0" % "test",
+      "org.scalatest"     %% "scalatest"    % "3.2.7"  % "test",
+      "org.scalacheck"    %% "scalacheck"   % "1.15.4" % "test",
       "org.xerial"        %% "xerial-core"  % "3.6.0"  % "test",
       "org.msgpack"       % "msgpack"       % "0.6.12" % "test",
       "commons-codec"     % "commons-codec" % "1.12"   % "test",

msgpack-core/src/test/scala/org/msgpack/core/MessagePackSpec.scala

@@ -16,15 +16,16 @@
 package org.msgpack.core
 
 import java.io.ByteArrayOutputStream
-
 import org.scalatest._
-import org.scalatest.prop.PropertyChecks
+import org.scalatest.matchers.should.Matchers
+import org.scalatest.prop.TableDrivenPropertyChecks
+import org.scalatest.wordspec.AnyWordSpec
 import xerial.core.log.{LogLevel, Logger}
 import xerial.core.util.{TimeReport, Timer}
 
 import scala.language.implicitConversions
 
-trait MessagePackSpec extends WordSpec with Matchers with GivenWhenThen with OptionValues with BeforeAndAfter with PropertyChecks with Benchmark with Logger {
+trait MessagePackSpec extends AnyWordSpec with Matchers with GivenWhenThen with OptionValues with BeforeAndAfter with Benchmark with Logger {
 
   implicit def toTag(s: String): Tag = Tag(s)
 

msgpack-core/src/test/scala/org/msgpack/core/MessagePackTest.scala

@@ -19,10 +19,11 @@ import java.io.ByteArrayOutputStream
 import java.math.BigInteger
 import java.nio.CharBuffer
 import java.nio.charset.{CodingErrorAction, UnmappableCharacterException}
-
 import org.msgpack.core.MessagePack.Code
-import org.msgpack.core.MessagePack.{UnpackerConfig, PackerConfig}
+import org.msgpack.core.MessagePack.{PackerConfig, UnpackerConfig}
 import org.msgpack.value.{Value, Variable}
+import org.scalacheck.Arbitrary
+import org.scalacheck.Prop.{forAll, propBoolean}
 
 import scala.util.Random
 
@@ -176,7 +177,7 @@ class MessagePackTest extends MessagePackSpec {
         unpack: MessageUnpacker => A,
         packerConfig: PackerConfig = new PackerConfig(),
         unpackerConfig: UnpackerConfig = new UnpackerConfig()
-    ): Unit = {
+    ): Boolean = {
       var b: Array[Byte] = null
       try {
         val bs     = new ByteArrayOutputStream()
@@ -189,6 +190,7 @@ class MessagePackTest extends MessagePackSpec {
         val unpacker = unpackerConfig.newUnpacker(b)
         val ret      = unpack(unpacker)
         ret shouldBe v
+        true
       } catch {
         case e: Exception =>
           warn(e.getMessage)
@@ -357,11 +359,9 @@ class MessagePackTest extends MessagePackSpec {
     }
 
     "pack/unpack strings" taggedAs ("string") in {
-
-      forAll { (v: String) =>
-        whenever(isValidUTF8(v)) {
-          check(v, _.packString(v), _.unpackString)
-        }
+      val utf8Strings = Arbitrary.arbitrary[String].suchThat(isValidUTF8 _)
+      utf8Strings.map { v =>
+        check(v, _.packString(v), _.unpackString)
       }
     }
 
@@ -532,7 +532,7 @@ class MessagePackTest extends MessagePackSpec {
     "pack/unpack extension types" taggedAs ("ext") in {
       forAll { (dataLen: Int, tpe: Byte) =>
         val l = Math.abs(dataLen)
-        whenever(l >= 0) {
+        l >= 0 ==> {
           val ext =
             new ExtensionTypeHeader(ExtensionTypeHeader.checkedCastToByte(tpe), l)
           check(ext, _.packExtensionTypeHeader(ext.getType, ext.getLength), _.unpackExtensionTypeHeader())

msgpack-core/src/test/scala/org/msgpack/value/ValueFactoryTest.scala

@@ -16,6 +16,7 @@
 package org.msgpack.value
 
 import org.msgpack.core.MessagePackSpec
+import org.scalacheck.Prop.forAll
 
 /**
   *
@@ -34,7 +35,7 @@ class ValueFactoryTest extends MessagePackSpec {
               isMap: Boolean = false,
               isExtension: Boolean = false,
               isRaw: Boolean = false,
-              isNumber: Boolean = false) {
+              isNumber: Boolean = false): Boolean = {
     v.isNilValue shouldBe isNil
     v.isBooleanValue shouldBe isBoolean
     v.isIntegerValue shouldBe isInteger
@@ -46,6 +47,7 @@ class ValueFactoryTest extends MessagePackSpec {
     v.isExtensionValue shouldBe isExtension
     v.isRawValue shouldBe isRaw
     v.isNumberValue shouldBe isNumber
+    true
   }
 
   "ValueFactory" should {

msgpack-core/src/test/scala/org/msgpack/value/ValueTest.scala

@@ -17,11 +17,12 @@ package org.msgpack.value
 
 import java.math.BigInteger
 import org.msgpack.core._
+import org.scalacheck.Prop.{forAll, propBoolean}
 
 import scala.util.parsing.json.JSON
 
 class ValueTest extends MessagePackSpec {
-  def checkSuccinctType(pack: MessagePacker => Unit, expectedAtMost: MessageFormat) {
+  def checkSuccinctType(pack: MessagePacker => Unit, expectedAtMost: MessageFormat): Boolean = {
     val b  = createMessagePackData(pack)
     val v1 = MessagePack.newDefaultUnpacker(b).unpackValue()
     val mf = v1.asIntegerValue().mostSuccinctMessageFormat()
@@ -33,6 +34,8 @@ class ValueTest extends MessagePackSpec {
     val mf2 = v2.asIntegerValue().mostSuccinctMessageFormat()
     mf2.getValueType shouldBe ValueType.INTEGER
     mf2.ordinal() shouldBe <=(expectedAtMost.ordinal())
+
+    true
   }
 
   "Value" should {
@@ -53,7 +56,7 @@ class ValueTest extends MessagePackSpec {
         checkSuccinctType(_.packBigInteger(BigInteger.valueOf(v)), MessageFormat.INT64)
       }
       forAll { (v: Long) =>
-        whenever(v > 0) {
+        v > 0 ==> {
           // Create value between 2^63-1 < v <= 2^64-1
           checkSuccinctType(_.packBigInteger(BigInteger.valueOf(Long.MaxValue).add(BigInteger.valueOf(v))), MessageFormat.UINT64)
         }