1 files changed, 16 insertions, 3 deletions
diff --git a/test/junit/scala/collection/mutable/BitSetTest.scala b/test/junit/scala/collection/mutable/BitSetTest.scala
index d56cc45601..f0a0ef5d75 100644
--- a/test/junit/scala/collection/mutable/BitSetTest.scala
+++ b/test/junit/scala/collection/mutable/BitSetTest.scala
@@ -1,13 +1,13 @@
 package scala.collection.mutable
 
+import org.junit.Test
 import org.junit.runner.RunWith
 import org.junit.runners.JUnit4
-import org.junit.{Test, Ignore}
 
 @RunWith(classOf[JUnit4])
 class BitSetTest {
   // Test for SI-8910
-  @Test def capacityExpansionTest() {
+  @Test def capacityExpansionTest(): Unit = {
     val bitSet = BitSet.empty
     val size   = bitSet.toBitMask.length
     bitSet ^= bitSet
@@ -20,7 +20,7 @@ class BitSetTest {
     assert(bitSet.toBitMask.length == size, "Capacity of bitset changed after &~=")
   }
   
-  @Test def test_SI8917() {
+  @Test def test_SI8917(): Unit = {
     val bigBitSet = BitSet(1, 100, 10000)
     val littleBitSet = BitSet(100)
     bigBitSet &= littleBitSet
@@ -28,4 +28,17 @@ class BitSetTest {
     littleBitSet &= bigBitSet
     assert(littleBitSet.toBitMask.length < bigBitSet.toBitMask.length, "Needlessly extended the size of bitset on &=")
   }
+
+  @Test def test_SI8647(): Unit = {
+    val bs = BitSet()
+    bs.map(_ + 1)    // Just needs to compile
+    val xs = bs: SortedSet[Int]
+    xs.map(_ + 1)    // Also should compile (did before)
+  }
+
+  @Test def t10164(): Unit = {
+    val bs = BitSet()
+    val last = (bs ++ (0 to 128)).last  // Just needs not to throw
+    assert(last == 128)
+  }
 }