Test for #3829. No review.

1 files changed, 42 insertions, 0 deletions

diff --git a/test/files/run/t3829.scala b/test/files/run/t3829.scala
new file mode 100644
index 0000000000..49fbbe6363
--- /dev/null
+++ b/test/files/run/t3829.scala
@@ -0,0 +1,42 @@
+
+
+
+
+// ticket #3829
+object Test {
+  import collection._
+
+  def main(args: Array[String]) {
+    val map = Map(1 -> 2, 3 -> 4)
+    assert(map.get(0) == None)
+
+    val defmap = map.withDefaultValue(-1)
+    assert(defmap.get(0) == Some(-1))
+    assert(defmap.size == 2)
+    assert(defmap.iterator.size == 2)
+    assert(defmap.empty.get(0) == Some(-1))
+    assert((defmap + (2 -> 3)).get(0) == Some(-1))
+    assert((defmap + (2 -> 3)).get(1) == Some(2))
+    assert((defmap + (2 -> 3)).get(2) == Some(3))
+    assert((defmap - 1).get(0) == Some(-1))
+    assert((defmap - 1).get(1) == Some(-1))
+    assert((defmap - 1).get(3) == Some(4))
+
+    val mutmap = mutable.Map(1 -> 2, 2 -> 3)
+    assert(mutmap.get(0) == None)
+
+    val defmutmap = mutmap.withDefaultValue(-1)
+    assert(defmutmap.get(0) == Some(-1))
+    assert(defmutmap.get(3) == Some(-1))
+    mutmap += 3 -> 4
+    assert(defmutmap.get(3) == Some(4))
+    assert(defmutmap.get(1) == Some(2))
+    mutmap -= 1
+    assert(defmutmap.get(1) == Some(-1))
+    assert(mutmap.get(1) == None)
+    defmutmap += 1 -> 2
+    assert(defmutmap.get(1) == Some(2))
+    assert(mutmap.get(1) == Some(2))
+  }
+
+}