1 files changed, 54 insertions, 0 deletions
diff --git a/test/junit/scala/collection/concurrent/TrieMapTest.scala b/test/junit/scala/collection/concurrent/TrieMapTest.scala
new file mode 100644
index 0000000000..ed67f3e9a9
--- /dev/null
+++ b/test/junit/scala/collection/concurrent/TrieMapTest.scala
@@ -0,0 +1,54 @@
+package scala.collection.concurrent
+
+import org.junit.{Assert, Test}
+
+class TrieMapTest {
+
+  private def check[T](result2: List[Any])(f: TrieMap[String, String] => TraversableOnce[Any]) = {
+    val m = TrieMap[String, String]()
+    val values = f(m)
+    m.put("k", "v")
+    Assert.assertEquals(Nil, values.toList)
+    Assert.assertEquals(result2, f(m).toList)
+  }
+
+  @Test
+  def iterator(): Unit = {
+    check(List(("k", "v")))(_.iterator)
+  }
+
+  @Test
+  def values(): Unit = {
+    check(List("v"))(_.values)
+  }
+
+  @Test
+  def valuesIterator(): Unit = {
+    check(List("v"))(_.valuesIterator)
+  }
+
+  @Test
+  def keySet(): Unit = {
+    check(List("k"))(_.keySet)
+  }
+
+  @Test
+  def keysIterator(): Unit = {
+    check(List("k"))(_.keysIterator)
+  }
+
+  @Test
+  def keys(): Unit = {
+    check(List("k"))(_.keys)
+  }
+
+  @Test
+  def filterKeys(): Unit = {
+    check(List(("k", "v")))(_.filterKeys(_ => true))
+  }
+
+  @Test
+  def mapValues(): Unit = {
+    check(List(("k", "v")))(_.mapValues(x => x))
+  }
+}