Re-enable collection-strawman tests

Author: allanrenucci

.gitmodules

@@ -8,5 +8,5 @@
 	branch = dotty-library2.12
 [submodule "collection-strawman"]
 	path = collection-strawman
-	url = https://github.com/scala/collection-strawman.git
-	branch = master
+	url = https://github.com/dotty-staging/collection-strawman.git
+	branch = dotty

collection-strawman

@@ -64,14 +64,12 @@ class IdempotencyTests extends ParallelTesting {
     }
     val allChecks = {
       check("CheckOrderIdempotency") +
-      // Disabled until strawman is fixed
-      // check("CheckStrawmanIdempotency") +
+      check("CheckStrawmanIdempotency") +
       check("CheckPosIdempotency")
     }
 
     val allTests = {
-      // Disabled until strawman is fixed
-      // strawmanIdempotency +
+      strawmanIdempotency +
       orderIdempotency +
       posIdempotency
     }

compiler/test/dotty/tools/dotc/IdempotencyTests.scala

@@ -25,9 +25,7 @@ class LinkTests extends ParallelTesting {
   def isInteractive = SummaryReport.isInteractive
   def testFilter = Properties.testsFilter
 
-
-  // Disabled until strawman is fixed
-  // @Test
+  @Test
   def linkTest: Unit = {
     // Setup and compile libraries
     val strawmanLibGroup = TestGroup("linkTest/strawmanLibrary")