1 files changed, 25 insertions, 0 deletions
diff --git a/spec/ruby/core/exception/cause_spec.rb b/spec/ruby/core/exception/cause_spec.rb
index 736ff1a046..007df41366 100644
--- a/spec/ruby/core/exception/cause_spec.rb
+++ b/spec/ruby/core/exception/cause_spec.rb
@@ -16,4 +16,29 @@ describe "Exception#cause" do
       end
     end
   end
+
+  it "is set for user errors caused by internal errors" do
+    -> {
+      begin
+        1 / 0
+      rescue
+        raise "foo"
+      end
+    }.should raise_error(RuntimeError) { |e|
+      e.cause.should be_kind_of(ZeroDivisionError)
+    }
+  end
+
+  it "is set for internal errors caused by user errors" do
+    cause = RuntimeError.new "cause"
+    -> {
+      begin
+        raise cause
+      rescue
+        1 / 0
+      end
+    }.should raise_error(ZeroDivisionError) { |e|
+      e.cause.should equal(cause)
+    }
+  end
 end