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-rw-r--r--lib/kernel/test/zlib_SUITE.erl38
1 files changed, 37 insertions, 1 deletions
diff --git a/lib/kernel/test/zlib_SUITE.erl b/lib/kernel/test/zlib_SUITE.erl
index f8257bd20c..4b67fce9a8 100644
--- a/lib/kernel/test/zlib_SUITE.erl
+++ b/lib/kernel/test/zlib_SUITE.erl
@@ -83,7 +83,7 @@ groups() ->
[api_open_close, api_deflateInit,
api_deflateSetDictionary, api_deflateReset,
api_deflateParams, api_deflate, api_deflateEnd,
- api_inflateInit, api_inflateSetDictionary,
+ api_inflateInit, api_inflateSetDictionary, api_inflateGetDictionary,
api_inflateSync, api_inflateReset, api_inflate, api_inflateChunk,
api_inflateEnd, api_setBufsz, api_getBufsz, api_crc32,
api_adler32, api_getQSize, api_un_compress, api_un_zip,
@@ -288,6 +288,42 @@ api_inflateSetDictionary(Config) when is_list(Config) ->
?m({'EXIT',{stream_error,_}}, zlib:inflateSetDictionary(Z1,Dict)),
?m(ok, zlib:close(Z1)).
+%% Test inflateGetDictionary.
+api_inflateGetDictionary(Config) when is_list(Config) ->
+ Z1 = zlib:open(),
+ IsOperationSupported =
+ case catch zlib:inflateGetDictionary(Z1) of
+ {'EXIT',{einval,_}} -> true;
+ {'EXIT',{enotsup,_}} -> false
+ end,
+ _ = zlib:close(Z1),
+ api_inflateGetDictionary_if_supported(IsOperationSupported).
+
+api_inflateGetDictionary_if_supported(false) ->
+ {skip, "inflateGetDictionary/1 unsupported in current setup"};
+api_inflateGetDictionary_if_supported(true) ->
+ % Compress payload using custom dictionary
+ Z1 = zlib:open(),
+ ?m(ok, zlib:deflateInit(Z1)),
+ Dict = <<"foobar barfoo foo bar far boo">>,
+ ?m(_, zlib:deflateSetDictionary(Z1, Dict)),
+ Payload = <<"foobarbarbar">>,
+ Compressed = zlib:deflate(Z1, Payload, finish),
+ ?m(ok, zlib:close(Z1)),
+
+ % Decompress and test dictionary extraction
+ Z2 = zlib:open(),
+ ?m(ok, zlib:inflateInit(Z2)),
+ ?m(<<>>, iolist_to_binary(zlib:inflateGetDictionary(Z2))),
+ ?m({'EXIT',{stream_error,_}}, zlib:inflateSetDictionary(Z2, Dict)),
+ ?m({'EXIT',{{need_dictionary,_},_}}, zlib:inflate(Z2, Compressed)),
+ ?m(ok, zlib:inflateSetDictionary(Z2, Dict)),
+ ?m(Dict, iolist_to_binary(zlib:inflateGetDictionary(Z2))),
+ ?m(Payload, iolist_to_binary(zlib:inflate(Z2, Compressed))),
+ ?m(ok, zlib:close(Z2)),
+ ?m(?BARG, zlib:inflateSetDictionary(Z2, Dict)),
+ ok.
+
%% Test inflateSync.
api_inflateSync(Config) when is_list(Config) ->
{skip,"inflateSync/1 sucks"}.