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-rw-r--r--lib/asn1/test/ber_decode_error.erl39
1 files changed, 16 insertions, 23 deletions
diff --git a/lib/asn1/test/ber_decode_error.erl b/lib/asn1/test/ber_decode_error.erl
index c0840e02d7..c45d130ff4 100644
--- a/lib/asn1/test/ber_decode_error.erl
+++ b/lib/asn1/test/ber_decode_error.erl
@@ -26,48 +26,41 @@ run([]) ->
{ok,B} = 'Constructed':encode('S3', {'S3',17}),
[T,L|V] = binary_to_list(B),
Bytes = list_to_binary([T,L+3|V] ++ [2,1,3]),
- case 'Constructed':decode('S3', Bytes) of
- {error,{asn1,{unexpected,_}}} -> ok
- end,
+ {unexpected,_} = dec_error('S3', Bytes),
%% Unexpected bytes must be accepted if there is an extensionmark
{ok,{'S3ext',17}} = 'Constructed':decode('S3ext', Bytes),
%% Truncated tag.
- {error,{asn1,{invalid_tag,_}}} =
- (catch 'Constructed':decode('I', <<31,255,255>>)),
+ {invalid_tag,_} = dec_error('I', <<31,255,255>>),
%% Overlong tag.
- {error,{asn1,{invalid_tag,_}}} =
- (catch 'Constructed':decode('I', <<31,255,255,255,127>>)),
+ {invalid_tag,_} = dec_error('I', <<31,255,255,255,127>>),
%% Invalid length.
- {error,{asn1,{invalid_length,_}}} =
- (catch 'Constructed':decode('I', <<8,255>>)),
+ {invalid_length,_} = dec_error('I', <<8,255>>),
%% Other errors.
- {error,{asn1,{invalid_value,_}}} =
- (catch 'Constructed':decode('I', <<>>)),
+ {invalid_value,_} = dec_error('I', <<>>),
- {error,{asn1,{invalid_value,_}}} =
- (catch 'Constructed':decode('I', <<8,7>>)),
+ {invalid_value,_} = dec_error('I', <<8,7>>),
%% Short indefinite length. Make sure that the decoder doesn't look
%% beyond the end of binary when looking for a 0,0 terminator.
- {error,{asn1,{invalid_length,_}}} =
- (catch 'Constructed':decode('S', sub(<<8,16#80,0,0>>, 3))),
- {error,{asn1,{invalid_length,_}}} =
- (catch 'Constructed':decode('S', sub(<<8,16#80,0,0>>, 2))),
- {error,{asn1,{invalid_length,_}}} =
- (catch 'Constructed':decode('S', sub(<<40,16#80,1,1,255,0,0>>, 6))),
- {error,{asn1,{invalid_length,_}}} =
- (catch 'Constructed':decode('S', sub(<<40,16#80,1,1,255,0,0>>, 5))),
+ {invalid_length,_} = dec_error('S', sub(<<8,16#80,0,0>>, 3)),
+ {invalid_length,_} = dec_error('S', sub(<<8,16#80,0,0>>, 2)),
+ {invalid_length,_} = dec_error('S', sub(<<40,16#80,1,1,255,0,0>>, 6)),
+ {invalid_length,_} = dec_error('S', sub(<<40,16#80,1,1,255,0,0>>, 5)),
%% A primitive must not be encoded with an indefinite length.
- {error,{asn1,{invalid_length,_}}} =
- (catch 'Constructed':decode('OS', <<4,128,4,3,97,98,99,0,0>>)),
+ {invalid_length,_} = dec_error('OS', <<4,128,4,3,97,98,99,0,0>>),
ok.
+dec_error(T, Bin) ->
+ {error,{asn1,{Reason,Stk}}} = 'Constructed':decode(T, Bin),
+ [{_,_,_,_}|_] = Stk,
+ Reason.
+
sub(Bin, Bytes) ->
<<B:Bytes/binary,_/binary>> = Bin,
B.