Scala Matcher类代码示例

//设置package包名称以及导入依赖的类
package com.github.norwae.ignifera

import akka.http.scaladsl.model.HttpEntity
import io.prometheus.client.exporter.common.TextFormat
import io.prometheus.client.{CollectorRegistry, Gauge}
import org.scalatest.matchers.{MatchResult, Matcher}
import org.scalatest.{FlatSpec, Matchers}

import scala.concurrent.duration._

class HttpExportSpec extends FlatSpec with Matchers {
  "The http export object" should "include metrics provided by the collector" in {
    val export =  new HttpExport {
      override val registry: CollectorRegistry = new CollectorRegistry()
    }
    val gauge = Gauge.build("testgauge", "Test").register(export.registry)
    gauge.inc()
    val reply = export.exportReply

    val entity = reply.entity.asInstanceOf[HttpEntity.Strict]
    val string = entity.data.utf8String
    string should containSubstring("testgauge")
  }

  it should "have the correct content type" in {
    val reply = new HttpExport {}.exportReply
    reply.entity.contentType.value.toLowerCase shouldEqual TextFormat.CONTENT_TYPE_004.toLowerCase
  }
  it should "include the default metrics" in {
    val reply = new HttpExport {}.exportReply
    val entity = reply.entity.asInstanceOf[HttpEntity.Strict]
    val string = entity.data.utf8String
    string should containSubstring("process_cpu_seconds_total")
    string should containSubstring("jvm_classes_loaded")
  }

  private def containSubstring(expected: String) =
    Matcher[String](left => MatchResult(left.contains(expected), s"Contain $expected", s"not contain $expected"))
} 

//设置package包名称以及导入依赖的类
package com.commodityvectors.snapshotmatchers.playJson

import com.commodityvectors.snapshotmatchers.{SnapshotLoader, SnapshotMessages, SnapshotSerializer}
import org.scalactic.Equality
import org.scalatest.matchers.{MatchResult, Matcher}
import play.api.libs.json.{JsValue, Json, Reads}

trait PlayJsonSnapshotMatcher extends SnapshotLoader with SnapshotMessages {
  implicit lazy val playJsonSerializer = new SnapshotSerializer[JsValue] {
    override def serialize(in: JsValue): String = Json.prettyPrint(in)
  }

  class JsonDeserializerShouldMatch[T](in: T)(implicit reads: Reads[T], equals: Equality[T]) extends Matcher[String] {
    override def apply(explicitId: String): MatchResult = {
      loadSnapshot(explicitId) match {
        case Some(content) =>
          val parsed = Json.parse(content).as[T]
          val isEquals = equals.areEqual(parsed, in)
          MatchResult(isEquals, errorMessage(in.toString, parsed.toString), ContentsAreEqual)
        case None => MatchResult(matches = false, s"Could not find snapshot for id: $explicitId", ContentsAreEqual)
      }
    }
  }

  def deserializeAs[T](in: T)(implicit reads: Reads[T], equals: Equality[T]) = new JsonDeserializerShouldMatch[T](in)
} 

//设置package包名称以及导入依赖的类
package knot.testKit

import org.scalatest.matchers.{MatchResult, Matcher}

import scala.reflect.runtime.universe
import scala.reflect.runtime.universe._

trait ReflectTypeMatchers {

  case class SameTypeMatcher(right: Type) extends Matcher[Type] {
    override def apply(left: universe.Type): MatchResult = {
      MatchResult(
        left =:= right,
        s"universe.Type $left not same type with $right",
        s"universe.Type $left same type with $right",
      )
    }
  }

  def sameType(tpe: Type) = new SameTypeMatcher(tpe)
}

object ReflectTypeMatchers extends ReflectTypeMatchers 

//设置package包名称以及导入依赖的类
package pokestats.util

import org.scalactic.Prettifier
import org.scalatest.matchers.{MatchResult, Matcher}
import org.skyscreamer.jsonassert.{JSONCompare, JSONCompareMode}

trait JsonEqualityMatcher {
  def equalsToJson(spread: String): Matcher[String] = {
    new Matcher[String] {
      def apply(left: String): MatchResult = {
        val result =
          JSONCompare.compareJSON(left, spread, JSONCompareMode.STRICT)
        MatchResult(
          !result.failed(),
          result.getMessage,
          "jsons are equal"
        )
      }
      override def toString: String =
        "jsonEqual (" + Prettifier.default(spread) + ")"
    }
  }
} 

//设置package包名称以及导入依赖的类
package uk.vitalcode.dateparser

import java.time.LocalDateTime

import org.scalatest._
import org.scalatest.matchers.{MatchResult, Matcher}


trait ExamplesSupport extends fixture.FreeSpec with fixture.TestDataFixture with Matchers {

  protected val currentDate: LocalDateTime

  private val dateTimeProvider = new DateTimeProvider {
    override def now: LocalDateTime = currentDate
  }

  private def parseAs(right: List[DateTimeInterval]): Matcher[String] = new Matcher[String] {
    def apply(left: String): MatchResult = {
      val actual = DateTimeInterval.of(left, dateTimeProvider)
      MatchResult(
        actual == right,
        s"String [$left] results in [$actual] which is not the same as expected [$right]",
        s"String [$left] results in $right but it must not"
      )
    }
  }

  protected def expected(expectation: DateTimeInterval*) =
    (text: FixtureParam) => text.name should parseAs(expectation.toList)
} 

//设置package包名称以及导入依赖的类
package swave.core

import scala.concurrent.duration._
import org.scalatest.matchers.{MatchResult, Matcher}
import org.scalatest._
import swave.core.util._

abstract class SwaveSpec extends FreeSpec with StreamEnvShutdown {
  type Timeout = SwaveSpec.Timeout
  def Timeout = SwaveSpec.Timeout

  def produce[T](expected: T*)(implicit timeout: Timeout = Timeout()): Matcher[Spout[T]] = produceSeq(expected)
  def produceSeq[T](expected: Seq[T])(implicit timeout: Timeout = Timeout()): Matcher[Spout[T]] =
    equal(expected).matcher[Seq[T]].compose(_.drainTo(Drain.seq(100)).await(timeout.duration))
  def produceError[T](expected: Throwable)(implicit timeout: Timeout = Timeout()): Matcher[Spout[T]] =
    equal(expected).matcher[Throwable].compose(_.drainTo(Drain.ignore).failed.await(timeout.duration))
  def produceErrorLike[T](pf: PartialFunction[Throwable, Unit])(
      implicit timeout: Timeout = Timeout()): Matcher[Spout[T]] =
    new Matcher[Spout[T]] {
      def apply(left: Spout[T]) = {
        val error = left.drainTo(Drain.ignore).failed.await(timeout.duration)
        inside(error)(pf)
        MatchResult(true, "", "")
      }
    }

  def timed[U](block: ? U): FiniteDuration = {
    val start = System.nanoTime()
    block
    (System.nanoTime() - start).nanos
  }
}

object SwaveSpec {
  final case class Timeout(duration: FiniteDuration = Duration.Zero)
}

trait StreamEnvShutdown extends Matchers with Inside with BeforeAndAfterAll { this: Suite ?

  implicit val env: StreamEnv

  override val invokeBeforeAllAndAfterAllEvenIfNoTestsAreExpected = true

  override protected def afterAll(): Unit = {
    env.shutdown().awaitTermination(2.seconds)
    afterTermination()
  }

  protected def afterTermination(): Unit = ()
} 

//设置package包名称以及导入依赖的类
package org.hammerlab.test.matchers.seqs

import org.scalatest.matchers.{ MatchResult, Matcher }

case class SetMatcher[T](expected: Set[T])
  extends Matcher[Set[T]] {
  val seqMatcher =
    SeqMatcher[T](
      expected.toSeq,
      matchOrder = false
    )

  override def apply(actual: Set[T]): MatchResult =
    seqMatcher(actual.toSeq)
}

object SetMatcher {
  def setMatch[T](expected: Iterable[(T)]): Matcher[Set[T]] =
    SetMatcher[T](expected.toSet)
} 

//设置package包名称以及导入依赖的类
package org.hammerlab.test.matchers.seqs

import org.scalatest.matchers.{ MatchResult, Matcher }

// Operate on common superclass of collection.{im,}mutable.Map
import collection.Map

case class MapMatcher[K: Ordering, V: Ordering](expected: Map[K, V]) extends Matcher[Map[K, V]] {
  val seqMatcher = PairSeqMatcher[K, V](expected.toSeq, matchOrder = false)

  override def apply(actual: Map[K, V]): MatchResult = {
    seqMatcher.apply(actual.toSeq)
  }
}

object MapMatcher {
  def mapMatch[K: Ordering, V: Ordering](expected: Map[K, V]): Matcher[Map[K, V]] = MapMatcher(expected)
  def mapMatch[K: Ordering, V: Ordering](expected: (K, V)*): Matcher[Map[K, V]] = MapMatcher(expected.toMap)
} 

//设置package包名称以及导入依赖的类
package org.hammerlab.test.matchers.seqs

import org.scalatest.matchers.{ MatchResult, Matcher }

case class ArrMatcher[T](expected: Iterable[T],
                         matchOrder: Boolean = true)
  extends Matcher[Array[T]] {
  override def apply(actual: Array[T]): MatchResult =
    SeqMatcher[T](expected, matchOrder)
      .apply(actual)
}

object ArrMatcher {
  def arrMatch[T](expected: Iterable[T]): Matcher[Array[T]] = ArrMatcher[T](expected.toSeq)
  def arrMatch[T](expected: Iterator[T]): Matcher[Array[T]] = ArrMatcher[T](expected.toSeq)
} 

//设置package包名称以及导入依赖的类
package org.hammerlab.test.matchers.files

import org.hammerlab.paths.Path
import org.hammerlab.test.resources.File
import org.scalatest.Matchers
import org.scalatest.matchers.{ MatchResult, Matcher }

class FileMatcher(expected: Path, binaryMatch: Boolean = false)
  extends Matcher[Path]
    with Matchers {

  
  override def apply(actual: Path): MatchResult =
    if (expected.isDirectory)
      MatchResult(
        false,
        s"'Expected' file $expected should not be a directory",
        s"<unused>"
      )
    else if (actual.isDirectory)
      MatchResult(
        false,
        s"'Actual' file $actual should not be a directory",
        s"<unused>"
      )
    else {
      val expectedStr = expected.read
      val actualStr = actual.read

      // Hook into scalatest's usual String-comparison logic, which includes a nice diff summary when the strings
      // differ.
      be(expectedStr).apply(actualStr)
    }
}

object FileMatcher {
  def fileMatch(expectedFile: String): FileMatcher = new FileMatcher(File(expectedFile))
  def fileMatch(expectedFile: File): FileMatcher = new FileMatcher(expectedFile)
} 

//设置package包名称以及导入依赖的类
package org.hammerlab

import org.hammerlab.test.matchers.lines.Line
import org.scalatest.matchers.Matcher

package object test {
  def firstLinesMatch(lines: Line*): Matcher[String] =
    org.hammerlab.test.matchers.lines.Matcher(
      prefix = true,
      lines: _*
    )

  def linesMatch(lines: Line*): Matcher[String] =
    org.hammerlab.test.matchers.lines.Matcher(
      prefix = false,
      lines: _*
    )
} 

//设置package包名称以及导入依赖的类
package com.tecsisa.lightql
package parser

import com.tecsisa.lightql.ast.Query
import fastparse.core.Parsed.Success
import org.scalatest.Matchers
import org.scalatest.matchers.{ MatchResult, Matcher }

trait QueryMatchers extends Matchers {

  type Success = fastparse.core.Parsed.Success[Query, _, _]
  type Failure = fastparse.core.Parsed.Failure[_, _]

  def parseTo(query: Query): Matcher[String] = new Matcher[String] {
    override def apply(left: String): MatchResult = {
      val parsed = LightqlParser.parse(left)
      val (msg, passes) = parsed match {
        case Success(v, _)  => (s"but parsed to $v", parsed.get.value == query)
        case error: Failure => (s"with failure: ${error.msg}", false)
      }
      MatchResult(
        passes,
        s"The string `$left` didn't match the expected query: $query $msg",
        s"The string `$left` matched the expected query: $query"
      )
    }
  }

  def notParse: Matcher[String] = new Matcher[String] {
    override def apply(left: String): MatchResult = {
      val parsed = LightqlParser.parse(left)
      val (msg, passes) = parsed match {
        case Success(v, _)  => (v, false)
        case error: Failure => (error.msg, true)
      }
      MatchResult(
        passes,
        s"The string `$left` should not parse, however it did parse to: $msg",
        s"The string did not parse wih failure: $msg"
      )
    }
  }

}

object QueryMatchers extends QueryMatchers 

//设置package包名称以及导入依赖的类
package ${package}

import java.io.File

import scala.io.Source

import org.scalatest.matchers.{MatchResult, Matcher}


trait CustomMatchers {
  class ContentMatcher(content: String) extends Matcher[File] {
    def apply(left: File): MatchResult = {
      def trimLines(s: String): String = s.split("\n").map(_.trim).mkString("\n")
      MatchResult(
        trimLines(Source.fromFile(left).mkString).contains(trimLines(content)),
        s"$left did not contain: $content" ,
        s"$left contains $content"
      )
    }
  }
  def containTrimmed(content: String) = new ContentMatcher(content)
} 

//设置package包名称以及导入依赖的类
package uk.gov.hmrc.agentinvitations.support

import akka.stream.ActorMaterializer
import com.fasterxml.jackson.databind.JsonMappingException
import org.scalatest.matchers.{MatchResult, Matcher}
import play.api.mvc.Result
import uk.gov.hmrc.play.http.HttpResponse
import uk.gov.hmrc.play.test.UnitSpec

import scala.util.Try


trait ErrorResultMatchers { this: UnitSpec =>

  implicit def materializer: ActorMaterializer

  class ErrorResultMatcher(expectedResult: Result) extends Matcher[HttpResponse] {
    override def apply(left: HttpResponse): MatchResult = {
      val expectedBodyJson = jsonBodyOf(expectedResult)
      val rawNegatedFailureMessage =
        s"""Response had expected status ${expectedResult.header.status} and body "$expectedBodyJson""""
      if (left.status != expectedResult.header.status) {
        MatchResult(
          false,
          s"""Response had status ${left.status} not expected status ${expectedResult.header.status}""",
          rawNegatedFailureMessage
        )
      } else {
        Try(left.json)
          .map(json =>
            MatchResult(
              json == expectedBodyJson,
              s"""Response had body "$json" not expected body "$expectedBodyJson""",
              rawNegatedFailureMessage))
          .recover {
            case e: JsonMappingException =>
              MatchResult(
                false,
                s"""Response had body "${left.body}" which did not parse as JSON due to exception:\n$e""",
                rawNegatedFailureMessage)
          }.get
      }
    }
  }

  def matchErrorResult(expectedResult: Result) = new ErrorResultMatcher(expectedResult)

} 

//设置package包名称以及导入依赖的类
package com.harmeetsingh13.chapter1

import akka.actor.ActorSystem
import akka.testkit.TestActorRef
import com.harmeetsingh13.chapter1.examples.AkkadmeyDBFirst
import com.harmeetsingh13.chapter1.messages.SetRequest
import org.scalatest.{Matchers, FunSpecLike, BeforeAndAfterEach, FunSpec}
import org.scalatest.matchers.Matcher


class AkkadmeyDBFirstTest extends FunSpecLike with Matchers with BeforeAndAfterEach{

  implicit val system = ActorSystem()
  describe("akkadmey-db-first-test"){
    describe("given SetRequest"){
      it("should place key/value into map"){
        val actorRef = TestActorRef(new AkkadmeyDBFirst)
        actorRef ! SetRequest("key", "value")
        val akkadmeyDb = actorRef.underlyingActor
        akkadmeyDb.map.get("key") should equal (Some("value"))
      }
    }
  }
}