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[英]Scala compile error - could not find implicit value for evidence parameter of type
[英]Gatling scala extension fails with, could not find implicit value for evidence parameter
嘗試使用整潔的擴展方法運行gatling 3.0.2,我在gatling 2.2.x之前已經使用了很多次
implicit class Extensions(val scenario: ScenarioBuilder) extends AnyVal {
def injectDefaults: PopulationBuilder =
scenario.inject(
rampUsersPerSec(RAMP_USER_PER_SEC) to LOAD_FACTOR during (RAMP_UP_TIME seconds),
constantUsersPerSec(LOAD_FACTOR) during (DURATION seconds)
)
}
但它不再編譯,失敗並顯示:
could not find implicit value for evidence parameter of type
io.gatling.core.controller.inject.InjectionProfileFactory[Product with Serializable with io.gatling.core.controller.inject.open.OpenInjectionStep]
scenario.inject(
有人知道為什么嗎?
我自己找到了解決方案,缺少一些隱式導入。 這是完整的代碼示例:
import io.gatling.core.Predef.{constantUsersPerSec, rampUsersPerSec,_}
import io.gatling.core.structure.{PopulationBuilder, ScenarioBuilder}
import scala.concurrent.duration._
object Config {
val LOAD_FACTOR: Double = 50
var RAMP_UP_TIME: Int = 10
val RAMP_USER_PER_SEC = 0.1
implicit class Extensions(val scenario: ScenarioBuilder) {
def injectDefaults: PopulationBuilder =
scenario.inject(
rampUsersPerSec(RAMP_USER_PER_SEC) to LOAD_FACTOR during (RAMP_UP_TIME seconds),
constantUsersPerSec(LOAD_FACTOR) during (DURATION seconds)
)
}
}
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