1 files changed, 34 insertions, 0 deletions
diff --git a/lib/asn1/test/testDefaultOctetString.erl b/lib/asn1/test/testDefaultOctetString.erl
new file mode 100644
index 0000000000..82cd5810e5
--- /dev/null
+++ b/lib/asn1/test/testDefaultOctetString.erl
@@ -0,0 +1,34 @@
+-module(testDefaultOctetString).
+
+-export([dos/1]).
+
+-include_lib("common_test/include/ct.hrl").
+
+-record('Dos', {
+  opt = asn1_NOVALUE,
+  def = asn1_DEFAULT
+}).
+
+-define(def_DEFAULT, <<5>>).
+
+dos(Rules) ->
+    %% test roundtrip default
+    E1 = roundtrip(#'Dos'{}, #'Dos'{def = ?def_DEFAULT}),
+    %% test the value dos defined in the .asn file
+    E2 = roundtrip('DefaultOctetString':dos()),
+    %% sanity test a fully specified SEQUENCE
+    E3 = roundtrip(#'Dos'{opt = <<1,2,3>>, def = <<6>>}),
+    %% test def is/isn't encoded according to the value
+    if Rules == ber ->
+            <<48, 0>> = E1,
+            <<48, 4, 16#82, 2, 16#12, 16#34>> = E2,
+            <<48, 8, 16#82, 3, 1, 2, 3, 16#8A, 1, 6>> = E3;
+       true ->
+            ignore
+    end,
+    ok.
+
+roundtrip(Value) ->
+    roundtrip(Value, Value).
+roundtrip(Value, Exp) ->
+    asn1_test_lib:roundtrip('DefaultOctetString', 'Dos', Value, Exp).