org.specs2.matcher.OperationMatchers.scala Maven / Gradle / Ivy

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package org.specs2
package matcher

import execute.*
import control.*
import text.Regexes.*
import fp.*, syntax.*

/** Matchers for Operation values
  */
trait OperationMatchers extends ValueChecks:

  def beOk[T]: Matcher[Operation[T]] =
    beOkWith[T, Result]((_: T) => Success())

  def beOk[T](check: ValueCheck[T]): Matcher[Operation[T]] =
    beOkWith(check.check)

  def beKo[T]: Matcher[Operation[T]] =
    Matcher { (operation: Operation[T]) =>
      operation.runOperation.fold(
        e => Success(),
        ok => Failure("a failure was expected")
      )
    }

  def beKo[T](message: String): Matcher[Operation[T]] =
    Matcher { (operation: Operation[T]) =>
      operation.runOperation.fold(
        { throwable =>
          if throwable.getMessage `matchesSafely` message then Success()
          else Failure(s"the operation failed with message ${throwable.getMessage}. Expected: $message")
        },
        ok => Failure(s"a failure with message $message was expected")
      )
    }

  private def beOkWith[T, R: AsResult](f: T => R): Matcher[Operation[T]] =
    Matcher { (operation: Operation[T]) =>
      operation.map(f).runOperation match
        case Left(t)  => AsResult.safely[Result](throw t)
        case Right(r) => AsResult(r)
    }

object OperationMatchers extends OperationMatchers