From 33ee29edc7dcf580099dfc7482737129ac2bddd0 Mon Sep 17 00:00:00 2001
From: Li Haoyi <haoyi.sg@gmail.com>
Date: Tue, 31 Oct 2017 08:35:46 -0700
Subject: Sketched out structure of Scala subprojects

---
 src/test/scala/forge/EvaluationTests.scala |  6 +++---
 src/test/scala/forge/GraphTests.scala      |  6 +++---
 src/test/scala/forge/TestGraphs.scala      |  2 +-
 src/test/scala/forge/TestUtil.scala        | 20 ++++++++++++++++++--
 4 files changed, 25 insertions(+), 9 deletions(-)

(limited to 'src/test/scala')

diff --git a/src/test/scala/forge/EvaluationTests.scala b/src/test/scala/forge/EvaluationTests.scala
index 313ceaaa..fe5d0b09 100644
--- a/src/test/scala/forge/EvaluationTests.scala
+++ b/src/test/scala/forge/EvaluationTests.scala
@@ -78,7 +78,7 @@ object EvaluationTests extends TestSuite{
         up.counter += 1
         check(down, expValue = 2, expEvaled = OSet(up, middle, down))
 
-        middle.asInstanceOf[Target.Test].counter += 1
+        middle.asInstanceOf[TestUtil.Test].counter += 1
 
         check(down, expValue = 3, expEvaled = OSet(middle, down))
       }
@@ -103,8 +103,8 @@ object EvaluationTests extends TestSuite{
       'anonDiamond - {
         import anonDiamond._
         val check = new Checker(anonDiamond)
-        val left = down.inputs(0).asInstanceOf[Target.Test]
-        val right = down.inputs(1).asInstanceOf[Target.Test]
+        val left = down.inputs(0).asInstanceOf[TestUtil.Test]
+        val right = down.inputs(1).asInstanceOf[TestUtil.Test]
         check(down, expValue = 0, expEvaled = OSet(up, left, right, down))
 
         down.counter += 1
diff --git a/src/test/scala/forge/GraphTests.scala b/src/test/scala/forge/GraphTests.scala
index d197fb5f..ec84218f 100644
--- a/src/test/scala/forge/GraphTests.scala
+++ b/src/test/scala/forge/GraphTests.scala
@@ -1,7 +1,7 @@
 package forge
 
 import utest._
-import Target.test
+import TestUtil.test
 import forge.util.OSet
 
 object GraphTests extends TestSuite{
@@ -79,8 +79,8 @@ object GraphTests extends TestSuite{
 
     'groupAroundNamedTargets - {
       def check[T: Discovered](base: T,
-                               target: Target.Test,
-                               expected: OSet[(OSet[Target.Test], Int)]) = {
+                               target: TestUtil.Test,
+                               expected: OSet[(OSet[TestUtil.Test], Int)]) = {
 
         val mapping = Discovered.mapping(base)
         val topoSortedTransitive = Evaluator.topoSortedTransitiveTargets(OSet(target))
diff --git a/src/test/scala/forge/TestGraphs.scala b/src/test/scala/forge/TestGraphs.scala
index 8dac142c..0ee48a18 100644
--- a/src/test/scala/forge/TestGraphs.scala
+++ b/src/test/scala/forge/TestGraphs.scala
@@ -1,6 +1,6 @@
 package forge
 
-import forge.Target.test
+import forge.TestUtil.test
 
 class TestGraphs(){
   // single
diff --git a/src/test/scala/forge/TestUtil.scala b/src/test/scala/forge/TestUtil.scala
index 8405c87c..9337fbe0 100644
--- a/src/test/scala/forge/TestUtil.scala
+++ b/src/test/scala/forge/TestUtil.scala
@@ -1,12 +1,28 @@
 package forge
 
-import forge.util.OSet
+import forge.util.{Args, OSet}
 import utest.assert
-
 import scala.collection.mutable
 
 object TestUtil {
+  def test(inputs: Target[Int]*) = {
+    new Test(inputs, pure = inputs.nonEmpty)
+  }
 
+  /**
+    * A dummy target that takes any number of inputs, and whose output can be
+    * controlled externally, so you can construct arbitrary dataflow graphs and
+    * test how changes propagate.
+    */
+  class Test(val inputs: Seq[Target[Int]],
+             val pure: Boolean) extends Target[Int]{
+    var counter = 0
+    def evaluate(args: Args) = {
+      counter + args.args.map(_.asInstanceOf[Int]).sum
+    }
+
+    override def sideHash = counter
+  }
   def checkTopological(targets: OSet[Target[_]]) = {
     val seen = mutable.Set.empty[Target[_]]
     for(t <- targets.items.reverseIterator){
-- 
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