2 files changed, 12 insertions, 0 deletions
diff --git a/test/files/run/richs.check b/test/files/run/richs.check
index 2aa7e9467d..a970a814b1 100644
--- a/test/files/run/richs.check
+++ b/test/files/run/richs.check
@@ -12,6 +12,11 @@ RichIntTest:
 13
 0
 0
+10000
+10
+20
+10001
+ffffffff
 
 RichStringTest1:
 s1: abc
diff --git a/test/files/run/richs.scala b/test/files/run/richs.scala
index db8f228843..674ca8fe10 100644
--- a/test/files/run/richs.scala
+++ b/test/files/run/richs.scala
@@ -53,6 +53,13 @@ object RichIntTest extends RichTest {
     println(length(m to n))
     println(length(n until m))
     println(length(n to m))
+
+    println(16.toBinaryString) // should be "10000"
+    println(16.toHexString)    // should be "10"
+    println(16.toOctalString)  // should be "20"
+
+    println(65537.toHexString) // should be "10001"
+    println((-1).toHexString)  // should be "ffffffff"
   }
 }
 object RichStringTest1 extends RichTest {