Add integration test

Ref #469

Author: eed3si9n

.travis.yml

@@ -14,7 +14,7 @@ jobs:
   - stage: test
     env: SBT_VERSION=1.2.8
     jdk: openjdk8
-    script: sbt "-no-colors" "^^ $SBT_VERSION" ";publishLocal;scalafmtCheckAll;plugin/scripted;scaffold/scripted;lib/test;app/compile"
+    script: sbt "-no-colors" "^^ $SBT_VERSION" ";publishLocal;scalafmtCheckAll;launcher/test;plugin/scripted;scaffold/scripted;lib/test;app/compile"
   - name: "Scala 2.13"
     script:
     - sbt "++ 2.13.2" app/test lib/test

build.sbt

@@ -1,7 +1,7 @@
 import Dependencies._
 import CrossVersion.partialVersion
 
-val g8version = "0.13.0-SNAPSHOT"
+val g8version = "0.13.1-SNAPSHOT"
 
 val javaVmArgs: List[String] = {
   import scala.collection.JavaConverters._
@@ -187,8 +187,15 @@ lazy val launcher = (project in file("launcher"))
     description := "Command line tool to apply templates defined on GitHub",
     name := "giter8-launcher",
     crossScalaVersions := List(scala212, scala213),
-    libraryDependencies += coursier,
-    run / fork := true
+    libraryDependencies ++= Seq(
+      coursier,
+      verify % Test,
+      sbtIo % Test
+    ),
+    testFrameworks += new TestFramework("verify.runner.Framework"),
+    run / fork := true,
+    Test / fork := true,
+    Test / javaOptions ++= Seq(s"""-DG8_HOME=${target.value / "home"}""")
     // assemblyMergeStrategy in assembly := {
     //   case "plugin.properties" => MergeStrategy.concat
     //   case "module-info.class" => MergeStrategy.discard

launcher/src/main/scala/LauncherMain.scala

@@ -4,7 +4,7 @@ import java.net.URLClassLoader
 import java.io.{BufferedInputStream, File, FileInputStream}
 import java.util.Properties
 import java.lang.reflect.InvocationTargetException
-import java.nio.file.Files
+import java.nio.file.{Files, StandardCopyOption}
 
 object LauncherMain extends Runner with App {
   java.util.logging.Logger.getLogger("").setLevel(java.util.logging.Level.SEVERE)
@@ -35,7 +35,7 @@ class LauncherProcessor extends Processor {
         (if (forceOverwrite) Vector("-f") else Vector()) ++
         (outputDirectory match { case Some(out) => Vector("-o", out.toString); case _ => Vector() })
     val giter8Files = giter8Artifacts(g8v)
-    virtuallyRun(giter8Files, virtualArgument)
+    virtuallyRun(giter8Files, virtualArgument, workingDirectory)
     Right("")
   }
 
@@ -67,7 +67,7 @@ class LauncherProcessor extends Processor {
         }
         downloadedJars map { downloaded =>
           val t = bootDir / downloaded.getName
-          Files.copy(downloaded.toPath, t.toPath).toFile
+          Files.copy(downloaded.toPath, t.toPath, StandardCopyOption.REPLACE_EXISTING).toFile
         }
       }
     // push launcher JAR to the end of classpath to avoid Scala version clash
@@ -83,9 +83,9 @@ class LauncherProcessor extends Processor {
   }
 
   // uses classloader trick to run
-  def virtuallyRun(files: Seq[File], args: Seq[String]): Unit = {
+  def virtuallyRun(files: Seq[File], args: Seq[String], workingDirectory: File): Unit = {
     val cl = new URLClassLoader(files.map(_.toURL).toArray, null)
-    call("giter8.Giter8", "run", cl)(classOf[Array[String]])(args.toArray)
+    call("giter8.Giter8", "run", cl)(classOf[Array[String]], classOf[File])(args.toArray, workingDirectory)
   }
 
   def giter8Version(templateDir: File): Option[String] = {

launcher/src/test/scala/LauncherTest.scala

@@ -0,0 +1,24 @@
+package testpkg
+
+import giter8._
+import verify._
+import java.io.File
+import sbt.io.IO
+
+object LauncherTest extends BasicTestSuite {
+  lazy val launcher = new Runner {
+    def run(args: Array[String], workingDirectory: File): Int = {
+      run(args, workingDirectory, new LauncherProcessor)
+    }
+  }
+  implicit private class RichFile(file: File) {
+    def /(child: String): File = new File(file, child)
+  }
+
+  test("runs scala/scala-seed.g8") {
+    IO.withTemporaryDirectory { dir =>
+      launcher.run(Array("scala/scala-seed.g8", "--name=hello"), dir)
+      assert((dir / "hello" / "build.sbt").exists)
+    }
+  }
+}

project/Dependencies.scala

@@ -21,6 +21,7 @@ object Dependencies {
   val scalacheck           = "org.scalacheck" %% "scalacheck" % "1.14.3"
   val scalatest            = "org.scalatest" %% "scalatest" % "3.2.0"
   val scalamock            = "org.scalamock" %% "scalamock" % "4.4.0"
+  val verify               = "com.eed3si9n.verify" %% "verify" % "0.2.0"
   val sbtIo                = "org.scala-sbt" %% "io" % "1.3.4"
   val scala212             = "2.12.11"
   val scala213             = "2.13.2"

project/build.properties

@@ -1 +1 @@
-sbt.version=1.3.10
+sbt.version=1.2.8