Merge pull request #97 from aaronp/cucumber

Partial fix for issue #44 — added cucumber support

Author: kurtkopchik

README.md

@@ -74,6 +74,7 @@ plugin will attempt to locate it in one of three places with the precedence orde
     testCasesJar := // The path to the Jar file containing the tests to execute. This defaults to the Jar file with the tests from the current sbt project.
     testCasesPackageTask := // The sbt Task to package the test cases used when running 'dockerComposeTest'. This defaults to the 'packageBin' task in the 'Test' Scope.
     testPassUseSpecs2 := // True if Specs2 is to be used to execute the test pass. This defaults to False and ScalaTest is used.
+    testPassUseCucumber := // True if cucumber is to be used to execute the test pass. This defaults to False and ScalaTest is used.
     variablesForSubstitution := // A Map[String,String] of variables to substitute in your docker-compose file. These are substituted substituted by the plugin and not using environment variables.
     variablesForSubstitutionTask := // An sbt task that returns a Map[String,String] of variables to substitute in your docker-compose file. These are substituted by the plugin and not using environment variables.
    ```
@@ -368,9 +369,17 @@ by setting the following property in build.sbt:
 Additionally, you can override the default Specs2 file runner properties as follows:
 
    ```
-    testExecutionExtraConfigTask := Map("filesrunner.verbose" -> s"true")
+    testExecutionExtraConfigTask := Map("filesrunner.verbose" -> "true")
    ```
 
+8) [**basic-with-tests-cucumber**](examples/basic-with-tests-cucumber): This project shows how to execute cucumber based test cases 
+by setting the following property in build.sbt:
+
+   ```
+    testPassUseCucumber := true
+   ```
+
+
 Currently Unsupported Docker Compose Fields
 -------------------------------------------
 1) "build:" - All docker compose services need to specify an "image:" field.

examples/basic-with-tests-cucumber/build.sbt

@@ -0,0 +1,47 @@
+name := "basic-cucumber"
+
+version := "1.0.0"
+
+scalaVersion := "2.11.11"
+
+enablePlugins(DockerPlugin, DockerComposePlugin, CucumberPlugin)
+
+libraryDependencies ++= {
+  val cucumber = List("core", "jvm", "junit").map(suffix =>
+    "info.cukes" % s"cucumber-$suffix" % "1.2.5" % "test") :+ ("info.cukes" %% "cucumber-scala" % "1.2.5" % "test")
+
+  cucumber ::: List(
+    "org.scalactic" %% "scalactic" % "3.0.4" % "test",
+    "org.scalatest" %% "scalatest" % "3.0.4" % ("test->*"),
+    "org.pegdown" % "pegdown" % "1.6.0" % ("test->*"),
+    "junit" % "junit" % "4.12" % "test"
+  )
+}
+
+CucumberPlugin.glue := "classpath:"
+CucumberPlugin.features += "classpath:"
+
+//Set the image creation Task to be the one used by sbt-docker
+dockerImageCreationTask := docker.value
+
+testPassUseCucumber := true
+
+imageNames in docker := Seq(ImageName(
+  repository = name.value.toLowerCase,
+  tag = Some(version.value))
+)
+
+// create a docker file with a file /inputs/example.input
+dockerfile in docker := {
+
+  val classpath: Classpath = (fullClasspath in Test).value
+  sLog.value.debug(s"Classpath is ${classpath.files.mkString("\n")}\n")
+
+  new Dockerfile {
+    val dockerAppPath = "/app/"
+    from("java")
+    add(classpath.files, dockerAppPath)
+
+    entryPoint("java", "-cp", s"$dockerAppPath:$dockerAppPath*", "example.CalculatorServer")
+  }
+}

examples/basic-with-tests-cucumber/docker/docker-compose.yml

@@ -0,0 +1,6 @@
+version: '3'
+services:
+  basic-cucumber:
+    image: basic-cucumber:1.0.0
+    ports:
+      - 8080:8080

examples/basic-with-tests-cucumber/project/build.properties

@@ -0,0 +1 @@
+sbt.version=0.13.16

examples/basic-with-tests-cucumber/project/plugins.sbt

@@ -0,0 +1,3 @@
+addSbtPlugin("se.marcuslonnberg" % "sbt-docker" % "1.4.1")
+addSbtPlugin("com.tapad" % "sbt-docker-compose" % "1.0.29-SNAPSHOT")
+addSbtPlugin("com.waioeka.sbt"  % "cucumber-plugin"      % "0.1.2")

examples/basic-with-tests-cucumber/src/main/scala/example/Calculator.scala

@@ -0,0 +1,40 @@
+package example
+
+import java.nio.file.{Files, Path, Paths}
+
+import scala.collection.JavaConverters._
+
+object Calculator {
+
+  def main(args: Array[String]): Unit = {
+    args.toList match {
+      case Nil => println(s"Usage: Expected either two ints or a file path")
+      case List(filePath) =>
+        println(apply(Paths.get(filePath)))
+      case List(a, b) =>
+        println(add(a.toInt, b.toInt))
+      case err => println(s"Usage: Expected either two ints or a file path, but got $err")
+    }
+  }
+
+  def add(x: Int, y: Int): Int = x + y
+
+  def subtract(x: Int, y: Int): Int = x - y
+
+  val PlusR = """(\d+)\s*\+\s*(\d+)""".r
+  val MinusR = """(\d+)\s*-\s*(\d+)""".r
+
+  /**
+    * Evaluates the first line of the input file to be an addition or subtration operation.
+    *
+    * This is just added to demonstrate e.g. composing two containers w/ shared volumes
+    */
+  def apply(input: Path): Int = {
+    Files.readAllLines(input).asScala.headOption match {
+      case Some(PlusR(a, b)) => add(a.toInt, b.toInt)
+      case Some(MinusR(a, b)) => subtract(a.toInt, b.toInt)
+      case _ => sys.error("Whacha talkin' bout, willis?")
+    }
+  }
+
+}

examples/basic-with-tests-cucumber/src/main/scala/example/CalculatorClient.scala

@@ -0,0 +1,24 @@
+package example
+
+import scala.sys.process._
+
+case class CalculatorClient(hostPort: String) {
+
+  def add(x: Int, y: Int) = curl("add", x, y)
+
+  def subtract(x: Int, y: Int) = curl("subtract", x, y)
+
+  private def curl(path: String, x: Int, y: Int) = {
+    val url = s"${hostPort}/$path/$x/$y"
+    println(s"curling $url")
+    val output = s"curl $url".!!
+    try {
+      output.trim.toInt
+    } catch{
+      case nfe : NumberFormatException =>
+        println(output)
+        throw new Exception(s"$url responded with: >${output}< : $nfe", nfe)
+    }
+  }
+
+}

examples/basic-with-tests-cucumber/src/main/scala/example/CalculatorServer.scala

@@ -0,0 +1,50 @@
+package example
+
+import java.net.InetSocketAddress
+
+import com.sun.net.httpserver.{HttpExchange, HttpHandler, HttpServer}
+
+object CalculatorServer extends App {
+  def start(port: Int) = {
+    val server = HttpServer.create(new InetSocketAddress(port), 0)
+    server.createContext("/", Handler)
+    server.start()
+    server
+  }
+
+
+  object Handler extends HttpHandler {
+
+    val AddInput = """/add/([-0-9]+)/([-0-9]+)/?""".r
+    val SubtractInput = """/subtract/([-0-9]+)/([-0-9]+)/?""".r
+
+    override def handle(ex: HttpExchange): Unit = {
+      val path = ex.getRequestURI.toString
+
+      val resultOpt = path match {
+        case AddInput(a, b) => Option(Calculator.add(a.toInt, b.toInt))
+        case SubtractInput(a, b) =>
+          Option(Calculator.subtract(a.toInt, b.toInt))
+        case _ => None
+      }
+
+      val replyString = resultOpt match {
+        case Some(x) =>
+          val response = x.toString
+          ex.sendResponseHeaders(200, response.length)
+          response
+        case None =>
+          val response = s"Unknown path: $path"
+          ex.sendResponseHeaders(404, response.length)
+          response
+      }
+
+      ex.getResponseBody.write(replyString.getBytes)
+    }
+  }
+
+
+  val port = args.headOption.map(_.toInt).getOrElse(8080)
+  println(s"Starting calculator server on port $port w/ user args ${args.mkString(": [", ",", "]")}")
+  start(port)
+}

examples/basic-with-tests-cucumber/src/main/scala/example/ClientApp.scala

@@ -0,0 +1,9 @@
+package example
+
+object ClientApp extends App {
+  val client = CalculatorClient("http://localhost:8080")
+
+  println(client.add(5, 6))
+  println(client.subtract(5, 6))
+
+}

examples/basic-with-tests-cucumber/src/test/resources/calculator-service.feature

@@ -0,0 +1,26 @@
+Feature: Remote Server/Client contract
+
+  Background:
+    And a calculator client against http://localhost:8080
+
+  Scenario Outline: Addition
+    Given a remote request to add <lhs> and <rhs>
+    Then The response should be <sum>
+    Examples:
+      | lhs | rhs | sum |
+      | -1  | 1   | 0   |
+      | 0   | 0   | 0   |
+      | 1   | 0   | 1   |
+      | 0   | 1   | 1   |
+      | 1   | 2   | 3   |
+
+  Scenario Outline: Subtraction
+    Given a remote request to subtract <rhs> from <lhs>
+    Then The response should be <result>
+    Examples:
+      | lhs | rhs | result |
+      | -1  | 1   | -2     |
+      | 0   | 0   | 0      |
+      | 1   | 0   | 1      |
+      | 0   | 1   | -1     |
+      | 1   | 2   | -1     |