Is it possible to compare only part of string in property of case class.
Using scala specs2 lib.
Is there is a possibility to write such matcher?
CaseClass(property = Prop("very long string")) must beEqualTo(CaseClass(property = Prop("%long%")))
Try case class matchers like so
foo must matchA[Foo].property(_ must =~("long"))
Here is a working example
import scala.language.experimental.macros
import org.specs2._
import org.specs2.matcher.MatcherMacros
class QuickStartSpec extends Specification with MatcherMacros { def is = s2"""
The 'Case class matchers' should
match on a part of a string $e1
"""
def e1 = {
case class Foo(property: String)
val foo = Foo(property = "very long string")
foo must matchA[Foo].property(_ must =~("long"))
}
}
where
libraryDependencies ++= Seq(
"org.specs2" %% "specs2-core" % "4.6.0" % "test",
"org.specs2" %% "specs2-matcher-extra" % "4.6.0" % "test"
),
With standard matchers
myCaseInst.property.myString must be matching(".*long.*")
Related
I want to mock this method
def zadd[V: ByteStringSerializer](key: String, scoreMembers: (Double, V)*): Future[Long]
Tried this
mock.zadd(anyString(), Seq((anyDouble(), any String()), (anyDouble(), anyString())): _*)
doesnt work because mockito says 3 matchers expected, but got 5 instead.
so I try using How to properly match varargs in Mockito
but, I cant even use the code listed in that example
ArgumentMatchers.<String>any() gets flagged as error in my IDE saying not recognized type String
mockito-scala supports varargs out-of-the-box, for example
import cats.implicits._
import org.mockito.ArgumentMatchersSugar
import org.mockito.cats.IdiomaticMockitoCats
import org.mockito.scalatest.IdiomaticMockito
import org.scalatest._
import org.scalatest.concurrent.ScalaFutures
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future
trait Foo {
def zadd(key: String, scoreMembers: (Double, String)*): Future[Long]
}
class HelloSpec extends FlatSpec
with Matchers
with IdiomaticMockito
with IdiomaticMockitoCats
with ScalaFutures
with ArgumentMatchersSugar {
"Foo" should "mock varargs" in {
val foo = mock[Foo]
foo.zadd("", *) returnsF 42L
foo.zadd("bar", (7.7, "qux")) returnsF 89L
foo.zadd("", (1.1, "")).futureValue should be (42L)
foo.zadd("bar", (7.7d, "qux")).futureValue should be (89L)
}
}
where
libraryDependencies ++= Seq(
"org.scalatest" %% "scalatest" % "3.0.8",
"org.mockito" %% "mockito-scala" % "1.5.13",
"org.mockito" %% "mockito-scala-scalatest" % "1.5.13",
"org.mockito" %% "mockito-scala-cats" % "1.5.13",
"org.typelevel" %% "cats-core" % "2.0.0-M4"
)
I'm trying to create Show Instance for my custom Config class.
The build.sbt file is -
name := "circe-demo"
version := "0.1"
scalaVersion := "2.11.12"
resolvers += Resolver.bintrayRepo("ovotech", "maven")
libraryDependencies += "io.circe" %% "circe-core" % "0.11.0"
libraryDependencies += "io.circe" %% "circe-parser" % "0.11.0"
libraryDependencies += "io.circe" %% "circe-generic" % "0.11.0"
libraryDependencies += "org.typelevel" %% "kittens" % "1.2.0"
libraryDependencies ++= Seq(
"is.cir" %% "ciris-cats",
"is.cir" %% "ciris-cats-effect",
"is.cir" %% "ciris-core",
"is.cir" %% "ciris-enumeratum",
"is.cir" %% "ciris-refined"
).map(_ % "0.12.1")
Complete code is -
import enumeratum.{Enum, EnumEntry}
sealed abstract class AppEnvironment extends EnumEntry
object AppEnvironment extends Enum[AppEnvironment] {
case object Local extends AppEnvironment
case object Testing extends AppEnvironment
case object Production extends AppEnvironment
override val values: Vector[AppEnvironment] =
findValues.toVector
}
import java.net.InetAddress
import scala.concurrent.duration.Duration
final case class ApiConfig(host: InetAddress, port: Int, apiKey: String, timeout: Duration)
import java.net.InetAddress
import cats.Show
import cats.derived.semi
import ciris.config.loader.AppEnvironment.{Local, Production, Testing}
import enumeratum.EnumEntry
import eu.timepit.refined.auto._
import eu.timepit.refined.types.string.NonEmptyString
import scala.concurrent.duration._
final case class Config(appName: NonEmptyString, environment: AppEnvironment, api: ApiConfig)
object Config {
implicit val showConfig: Show[Config] = {
implicit val showDuration: Show[Duration] =
Show.fromToString
implicit val showInetAddress: Show[InetAddress] =
Show.fromToString
implicit def showEnumEntry[E <: EnumEntry]: Show[E] =
Show.show(_.entryName)
// Show.show[Config](x => s"api = ${x.api} appName = ${x.appName} environment ${x.environment}")
semi.show
}
}
semi.show in the above code throws the below exception -
[error] /Users/rajkumar.natarajan/Documents/Coding/kafka_demo/circe-demo/src/main/scala/ciris/config/loader/Config.scala:32:5: ambiguous implicit values:
[error] both value emptyProductDerivedShow in trait MkShowDerivation of type => cats.derived.MkShow[shapeless.HNil]
[error] and method emptyCoproductDerivedShow in trait MkShowDerivation of type => cats.derived.MkShow[shapeless.CNil]
[error] match expected type cats.derived.MkShow[A]
[error] show
[error] ^
[error] one error found
[error] (Compile / compileIncremental) Compilation failed
[error]
I'm new to functional programming using cats.
How can I resolve this exception.
Unfortunately error reporting when such complicated implicits and macros are involved is far from perfect. The message you see actually means that some required implicits for the real generator (MkShow.genericDerivedShowProduct in this case) have not been found and the search went back to some where basic stuff where there is an ambiguity. And the stuff that is missing is mostly very basic such as an implicit for Show[Int] or Show[String]. The simplest way to get them all is to import cats.implicits._ but that will also bring catsStdShowForDuration which is a Show[Duration]. But since it's implementation is really the same as your custom one, it is easier to remove your custom one. One more thing that is missing is Show[NonEmptyString] and it is easy to create one
implicit def showNonEmptyString: Show[NonEmptyString] = Show.show(nes => nes)
To sum up, when I define your showConfig as
implicit val showConfig: Show[Config] = {
import cats.implicits._
// is already defined in cats.implicits._
//implicit val showDuration: Show[Duration] = Show.fromToString
implicit val showInetAddress: Show[InetAddress] = Show.fromToString
implicit def showEnumEntry[E <: EnumEntry]: Show[E] = Show.show(_.entryName)
implicit def showNonEmptyString: Show[NonEmptyString] = Show.show(nes => nes)
// Show.show[Config](x => s"api = ${x.api} appName = ${x.appName} environment ${x.environment}")
semi.show
}
it compiles for me.
P.S. is there any good reason why you put your AppEnvironment under ciris.* package? I'd say that generally putting your custom code into packages of 3-rd party library is an easy way to mess things up.
Why can I not tell a mock that it should expect an instance of a class without explicitly giving the type? Here is what I mean:
val myClass = new MyClass(...)
val traitMock = mock[MyTrait]
(traitMock.mymethod _).expects(myClass).returning(12.3)
does not work, while
val myClass: MyClass = new MyClass(...)
val traitMock = mock[MyTrait]
(traitMock.mymethod _).expects(myClass).returning(12.3)
does work. How come the type can not be inferred?
My testing part in build.sbt is
libraryDependencies ++= Seq(
"org.scalatest" %% "scalatest" % "3.0.0" % "test"
exclude("org.scala-lang", "scala-reflect")
exclude("org.scala-lang.modules", "scala-xml")
)
libraryDependencies += "org.scalamock" %% "scalamock-scalatest-support" % "3.3.0" % "test"
Since I was asked for MyClass (it is SpacePoint here):
trait SpacePoint {
val location: SpaceLocation
}
val sp = new SpacePoint {
override val location: SpaceLocation = new SpaceLocation(DenseVector(1.0, 1.0))
}
So actually it works for me. Let me mention that type inference in the code:
val myClass = new MyClass(...)
has nothing to do with ScalaMock but is guaranteed by scala itself. Below I will specify working sample with library versions and sources of the classes.
Testing libraries:
"org.scalatest" %% "scalatest" % "2.2.4" % "test",
"org.scalamock" %% "scalamock-scalatest-support" % "3.2.2" % "test"
Source code of classes:
class MyClass(val something: String)
trait MyTrait {
def mymethod(smth: MyClass): Double
}
Source code of test:
import org.scalamock.scalatest.MockFactory
import org.scalatest.{Matchers, WordSpec}
class ScalamockTest extends WordSpec with MockFactory with Matchers {
"ScalaMock" should {
"infers type" in {
val myClass = new MyClass("Hello")
val traitMock = mock[MyTrait]
(traitMock.mymethod _).expects(myClass).returning(12.3)
traitMock.mymethod(myClass) shouldBe 12.3
}
}
}
Hope it helps. Will be ready to update answer once you provide more details.
Using the Slick version 3.1.1 [enter link description here][1]
[1]: http://slick.lightbend.com/download/ I want to create a projection that maps to the case class of mine. However, the problem I keep getting is that the operator for bi-directional mapping cannot be found. Here is a quick look onto the dependencies defined in the .sbt file:
libraryDependencies ++= Seq(
"com.typesafe.slick" %% "slick" % "3.1.1",
"org.slf4j" % "slf4j-nop" % "1.6.4"
)
Whereas the case class and the Table[T] derivation I've defined are as follows:
import slick.driver.PostgresDriver._
import slick.lifted._
case class Log(created_at: String, file: String, line: String, systemName: String, systemVersion: String, networkStatus: Boolean, message: String)
class LogTable(tag: Tag) extends Table[Log](tag, "log") {
def created_at = column[String]("created_at")
def file = column[String]("file")
def line = column[String]("line")
def systemName = column[String]("systemName")
def systemVersion = column[String]("systemVersion")
def networkStatus = column[Boolean]("networkStatus")
def message = column[String]("message")
def * = (created_at, file, line, systemName, systemVersion, networkStatus, message) <> (LogKitIOS.tupled, LogKitIOS.unapply _)
}
Does anyone have an idea onto why I am not able to use the <> operator?
I defined the following class which I want to modelize :
case class Record(
recordKey: String,
channels: Map[String, Channel],
)
object Record {
implicit val RecordFormat = Json.format[Record]
}
Now, I want to get one object of this type from reactive mongo like this (in an another class):
import scala.concurrent.duration._
import scala.concurrent.{Future, Await}
import scala.concurrent.ExecutionContext.Implicits.global
import reactivemongo.api._
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.bson.BSONDocument
object Test {
val collection = connect()
val timeout = 10.seconds
def connect() : BSONCollection = {
val config = ConfigFactory.load()
val driver = new MongoDriver
val connection = driver.connection(List(config.getString("mongodb.uri")))
val db = connection("/toto")
db.collection("foo")
}
def findRecord(recordKey : String) : Record = {
return Test.collection
.find(BSONDocument("recordKey"->recordKey))
.one[Record]
}
But this code doesn't compile :
could not find implicit value for parameter reader: reactivemongo.bson.BSONDocumentReader[Record]
Could someone explain how to fix this issue ?
I also test that :
def findRecord(recordKey : String) : Record = {
val futureRecord : Future[Option[Record]] =
Test.collection
.find(BSONDocument("recordKey"->recordKey))
.one[Record]
return Await.result(futureRecord, 10.seconds).getOrElse(null)
}
I also added my build.sbt :
libraryDependencies ++= Seq(
"org.apache.spark" % "spark-streaming_2.10" % "1.5.2",
"org.apache.spark" % "spark-streaming-kafka_2.10" % "1.5.2",
"org.slf4j" % "slf4j-api" % "1.7.13",
"org.slf4j" % "slf4j-simple" % "1.7.13",
"com.amazonaws" % "aws-java-sdk" % "1.10.12",
"com.typesafe.play" % "play-json_2.10" % "2.4.6",
"com.typesafe" % "config" % "1.3.0",
"org.scalaj" %% "scalaj-http" % "2.2.1",
"com.typesafe.akka" % "akka-actor_2.10" % "2.3.14",
"org.reactivemongo" %% "reactivemongo" % "0.11.9",
"com.github.nscala-time" %% "nscala-time" % "2.6.0"
)
Note that is it not a Play App.
You need to define a BSONDocumentReader for your case class Record. Here is a link to the Documentation. Very similar to Play JSON Readers and Writers Reactive Mongo needs to understand how to convert back and forth between your domain object and BSONDocument. Similar to Play JSON as well you can write these out in a more manual style(Write a BSONDocumentReader instance and a BSONDocumentWriter instance) and customize every detail and apply transformations etc. Similar in style to Play JSON's format you used above ReactiveMongo does provide helpful macros to generate these classes for you.
For your Record class you would need to add an implicit val like this to your object:
import reactivemongo.bson._
implicit val recordHandler: BSONHandler[BSONDocument, Record] = Macros.handler[Record]
/* Or only one of these [if your only ever writing or reading this data etc:
implicit val recordReader: BSONDocumentReader[Record] = Macros.reader[Record]
implicit val recordWriter: BSONDocumentWriter[Record] = Macros.writer[Record]
*/
I would say try to start with the Macros and see if those meet your needs. If you need more control of the processing/transformation you can define your own BSONDocumentReader and BSONDocumentWriter instances.
updated record class
import play.api.libs.json.Json
import reactivemongo.bson._
case class Channel(label: String,amplitude: Double,position: Option[String])
object Channel {
implicit val ChannelFormat = Json.format[Channel]
implicit val channelHandler: BSONHandler[BSONDocument, Channel] = Macros.handler[Channel]
}
object RecordType extends Enumeration {
type RecordType = Value
val T1 = Value
implicit val enumFormat = new Format[RecordType] {
def reads(json: JsValue) = JsSuccess(RecordType.withName(json.as[String]))
def writes(enum: RecordType) = JsString(enum.toString)
}
implicit object RecordTypeReader extends BSONDocumentReader[RecordType] {
def read(doc: BSONDocument) : RecordType = {
RecordType.withName(doc.getAs[String]("recordType").get)
}
}
implicit object RecordTypeWriter extends BSONDocumentWriter[RecordType] {
def write(recordType: RecordType) : BSONDocument = BSONDocument(
"recordType" -> BSONString(recordType.toString)
)
}
}
case class Record(recordKey: String,recordType: RecordType.Value,channels: Map[String, Channel])
object Record {
implicit val RecordFormat = Json.format[Record]
implicit val recordHandler: BSONHandler[BSONDocument, Record] = Macros.handler[Record]
}