Restructure the entry point for easier testing.

src/main/kotlin/com/beust/kobalt/Main.kt

@@ -17,12 +17,32 @@ import java.net.URLClassLoader
 import javax.inject.Inject
 
 fun main(argv: Array<String>) {
-    val result = mainNoExit(argv)
+    val result = Main.mainNoExit(argv)
     if (result != 0) {
         System.exit(result)
     }
 }
 
+class Main @Inject constructor(
+        val plugins: Plugins,
+        val http: Http,
+        val files: KFiles,
+        val executors: KobaltExecutors,
+        val dependencyManager: DependencyManager,
+        val github: GithubApi2,
+        val updateKobalt: UpdateKobalt,
+        val client: KobaltClient,
+        val pluginInfo: PluginInfo,
+        val options: Options) {
+
+    companion object {
+        fun mainNoExit(argv: Array<String>): Int {
+            val (jc, args) = parseArgs(argv)
+            Kobalt.init(MainModule(args, KobaltSettings.readSettingsXml()))
+            val result = launchMain(Kobalt.INJECTOR.getInstance(Main::class.java), jc, args, argv)
+            return result
+        }
+
         private fun parseArgs(argv: Array<String>): Main.RunInfo {
             val args = Args()
             val result = JCommander(args)
@@ -35,29 +55,18 @@ private fun parseArgs(argv: Array<String>): Main.RunInfo {
             return Main.RunInfo(result, args)
         }
 
-fun mainNoExit(argv: Array<String>): Int {
+        /**
-    val (jc, args) = parseArgs(argv)
+         * Entry point for tests, which can instantiate their main object with their own module and injector.
-    Kobalt.init(MainModule(args, KobaltSettings.readSettingsXml()))
+         */
-    val result = Kobalt.INJECTOR.getInstance(Main::class.java).run {
+        fun launchMain(main: Main, jc: JCommander, args: Args, argv: Array<String>) : Int {
+            return main.run {
                 val runResult = run(jc, args, argv)
                 pluginInfo.cleanUp()
                 executors.shutdown()
                 runResult
             }
-    return result
         }
-
+    }
-private class Main @Inject constructor(
-        val plugins: Plugins,
-        val http: Http,
-        val files: KFiles,
-        val executors: KobaltExecutors,
-        val dependencyManager: DependencyManager,
-        val github: GithubApi2,
-        val updateKobalt: UpdateKobalt,
-        val client: KobaltClient,
-        val pluginInfo: PluginInfo,
-        val options: Options) {
 
     data class RunInfo(val jc: JCommander, val args: Args)