在Play框架规范中设置PhantomJSDriver上的接受语言 [英] Set Accept-Language on PhantomJSDriver in a Play Framework Specification

问题描述

如何在Play Framework 2.2规范中为PhantomJSDriver配置特定的Accept-Language语言标头?

How can the PhantomJSDriver be configured with a specific Accept-Language language header in a Play Framework 2.2 specification?

给出以下代码:

import org.specs2.mutable._
import org.specs2.runner._
import org.junit.runner._
import play.api.i18n._
import play.api.test._
import play.api.test.Helpers._
import org.openqa.selenium.phantomjs.PhantomJSDriver

@RunWith(classOf[JUnitRunner])
class IntegrationSpec extends Specification {

  "Application" should {

    "work from within a browser" in new WithBrowser(webDriver = classOf[PhantomJSDriver]) {
      browser.goTo("http://localhost:" + port)
      implicit val lang = Lang("pt-BR")
      val expected = Messages("home.index.featured_lead")
      browser.pageSource must contain(expected)
    }
  }
}

如何确保由goTO生成的请求将与特定的Accept-Language标头一起发送，例如pt-BR?

How can I make sure that the request generated by goTO will be sent with a specific Accept-Language header, e.g. pt-BR?

更新:该问题的目的是能够在针对特定语言配置的浏览器(例如PhantomJS)中运行模拟测试.上面的代码示例只是要求浏览器检测页面中是否存在一些本地化的文本，但是可以在模拟浏览器中运行的测试种类却千差万别.例如，可以在运行时通过JavaScript设置文本.或者，我可能想要截取屏幕截图并将其与以前的参考屏幕截图进行比较，以测试布局.默认情况下，显然浏览器使用的是计算机的语言环境，这会破坏连续的集成测试.所以问题是如何从Play Framework测试中配置PhantomJS.

Update: The objective of the question is to be able to run tests in a simulated browser (such as PhantomJS) with the browser configured for a specific language. The code sample above just asks the browser to detect if there is some localized text in the page, but the kind of tests that can be run in a simulated browser vary a lot. For instance, the text might be set at runtime via JavaScript. Or I may want to take a screenshot and compare it with a previous reference screenshot, to test layouts. By default, apparently the browser is using the machine's locale, which breaks continuous integration tests. So the question is how can PhantomJS be configured from a Play Framework test.

推荐答案

基于

Based on a forum message by Yasuki Okumura, this can be done by creating a TestBrowser object from a preconfigured driver.

例如:

在文件WithPhantomJS.scala中:

package com.myproject.website.tests

import org.openqa.selenium.remote.DesiredCapabilities
import org.openqa.selenium.phantomjs.PhantomJSDriver
import org.openqa.selenium.phantomjs.PhantomJSDriverService
import org.specs2.execute.AsResult
import org.specs2.execute.Result
import org.specs2.mutable.Around
import org.specs2.specification.Scope
import play.api.i18n.Lang
import play.api.test.Helpers._
import play.api.test.FakeApplication
import play.api.test.TestBrowser
import play.api.test.TestServer
import scala.collection.JavaConverters._

abstract class WithPhantomJS(val additionalOptions: Map[String, String] = Map()) extends Around with Scope {

  implicit def app = FakeApplication()

  implicit def port = play.api.test.Helpers.testServerPort

  lazy val browser: TestBrowser = {
    val defaultCapabilities = DesiredCapabilities.phantomjs
    val additionalCapabilities = new DesiredCapabilities(additionalOptions.asJava)
    val capabilities = new DesiredCapabilities(defaultCapabilities, additionalCapabilities)
    val driver = new PhantomJSDriver(capabilities)
    TestBrowser(driver, Some("http://localhost:" + port))
  }

  override def around[T: AsResult](body: => T): Result = {
    try {
      running(TestServer(port, app))(AsResult.effectively(body))
    } finally {
      browser.quit()
    }
  }
}

在文件IntegrationSpec.scala中:

package com.myproject.website.tests

import com.myproject.common.helpers._
import org.junit.runner._
import org.specs2.runner._
import play.api.i18n._
import play.api.test._
import play.api.test.Helpers._
import org.specs2.mutable.Specification
import org.openqa.selenium.phantomjs.PhantomJSDriverService

/**
 * An integration test will fire up a whole play application in a real (or headless) browser.
 */
@RunWith(classOf[JUnitRunner])
class IntegrationSpec extends Specification {

  val enUSLangCode = "en-US"
  val ptBRLangCode = "pt-BR"

  val enUSOptions = getPhantomJSLanguageOption(enUSLangCode)
  val ptBROptions = getPhantomJSLanguageOption(ptBRLangCode)

  "Application" should {

    "work from within a browser with en-US language" in new WithPhantomJS(enUSOptions) {
      browser.goTo("http://localhost:" + port)
      implicit val lang = Lang(enUSLangCode)
      val expected = Messages("home.index.featured_lead")
      browser.pageSource must contain(expected)
    }

    "work from within a browser with pt-BR language" in new WithPhantomJS(ptBROptions) {
      browser.goTo("http://localhost:" + port)
      implicit val lang = Lang(ptBRLangCode)
      val expected = Messages("home.index.featured_lead")
      browser.pageSource must contain(expected)
    }

  }

  private def getPhantomJSLanguageOption(langCode: String) =
    Map(PhantomJSDriverService.PHANTOMJS_PAGE_CUSTOMHEADERS_PREFIX + "Accept-Language" -> langCode)

}

此外，build.sbt中需要此依赖项:

Also, this dependency is required in build.sbt:

libraryDependencies += "com.github.detro.ghostdriver" % "phantomjsdriver" % "1.0.4" % "test"

在Play Framework 2.3中，WithBrowser类

In Play Framework 2.3, the WithBrowser class will accept a WebDriver instance directly.

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