Tests: Properly handle temp directories

This required a fix for `__mkdir` in NetLogo, as well as properly
cleaning up the `tmp/` directory used by the language tests.

Author: LaCuneta

build.sbt

@@ -10,7 +10,7 @@ version    := "1.1.1"
 isSnapshot := true
 
 netLogoClassManager := "org.nlogo.extensions.array.ArrayExtension"
-netLogoVersion      := "6.2.2"
+netLogoVersion      := "6.2.2-2f9fab6"
 
 javaSource in Compile := baseDirectory.value / "src" / "main"
 scalaSource in Test   := baseDirectory.value / "src" / "test"

src/test/Tests.scala

@@ -1,6 +1,8 @@
 // (C) Uri Wilensky. https://github.com/NetLogo/Python-Extension
 
-package org.nlogo.extensions.py
+package org.nlogo.extensions.array
+
+import org.scalatest.BeforeAndAfterAll
 
 import java.io.File
 import org.nlogo.headless.TestLanguage
@@ -10,6 +12,17 @@ object Tests {
   val testFiles     = testFileNames.map( (f) => (new File(f)).getCanonicalFile )
 }
 
-class Tests extends TestLanguage(Tests.testFiles) {
+class Tests extends TestLanguage(Tests.testFiles) with BeforeAndAfterAll {
   System.setProperty("org.nlogo.preferHeadless", "true")
+
+  override def afterAll() {
+    val file = new File("tmp/array")
+    def deleteRec(f: File) {
+      if (f.isDirectory) {
+        f.listFiles().foreach(deleteRec)
+      }
+      f.delete()
+    }
+    deleteRec(file)
+  }
 }

tests.txt

@@ -1,9 +1,9 @@
 ArraysBug716a
   extensions [array]
   globals [glob1 glob2]
-  O> __mkdir "tmp/ImportWorld"
+  O> __mkdir "tmp/array"
   O> set glob1 array:from-list [1 2]
-  O> set glob2 (word "tmp/ImportWorld/test-file-" __nano-time ".csv")
+  O> set glob2 (word "tmp/array/test-file-" __nano-time ".csv")
   O> export-world glob2
   O> set glob1 0
   O> import-world glob2
@@ -13,9 +13,9 @@ ArraysBug716a
 ArraysBug716b
   extensions [array]
   globals [glob1 glob2]
-  O> __mkdir "tmp/ImportWorld"
+  O> __mkdir "tmp/array"
   O> set glob1 (list array:from-list [1 2] array:from-list [3 4])
-  O> set glob2 (word "tmp/ImportWorld/test-file-" __nano-time ".csv")
+  O> set glob2 (word "tmp/array/test-file-" __nano-time ".csv")
   O> export-world glob2
   O> set glob1 0
   O> import-world glob2