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-rw-r--r--lib/stdlib/test/tar_SUITE.erl60
1 files changed, 47 insertions, 13 deletions
diff --git a/lib/stdlib/test/tar_SUITE.erl b/lib/stdlib/test/tar_SUITE.erl
index 48f58cd05d..9ad3936928 100644
--- a/lib/stdlib/test/tar_SUITE.erl
+++ b/lib/stdlib/test/tar_SUITE.erl
@@ -283,17 +283,16 @@ long_names(doc) ->
long_names(Config) when is_list(Config) ->
?line DataDir = ?config(data_dir, Config),
?line Long = filename:join(DataDir, "long_names.tar"),
+ run_in_short_tempdir(Config,
+ fun() -> do_long_names(Long) end).
+do_long_names(Long) ->
%% Try table/2 and extract/2.
?line case erl_tar:table(Long, [verbose]) of
{ok,List} when is_list(List) ->
?line io:format("~p\n", [List])
end,
-
- %% To avoid getting too long paths for Windows to handle, extract into
- %% the current directory (which is the test_server directory). Its path
- %% is quite a bit shorter than the path to priv_dir.
?line {ok,Cwd} = file:get_cwd(),
?line ok = erl_tar:extract(Long),
?line Base = filename:join([Cwd, "original_software", "written_by",
@@ -312,17 +311,16 @@ long_names(Config) when is_list(Config) ->
?line "Here"++_ = binary_to_list(First),
?line "And"++_ = binary_to_list(Second),
- %% Clean up.
- ?line delete_files([filename:join(Cwd, "original_software"),EmptyDir]),
-
ok.
create_long_names(doc) ->
["Creates a tar file from a deep directory structure (filenames are ",
"longer than 100 characters)."];
create_long_names(Config) when is_list(Config) ->
- ?line PrivDir = ?config(priv_dir, Config),
- ?line ok = file:set_cwd(PrivDir),
+ run_in_short_tempdir(Config, fun create_long_names/0).
+
+create_long_names() ->
+ ?line {ok,Dir} = file:get_cwd(),
Dirs = ["aslfjkshjkhliuf",
"asdhjfehnbfsky",
"sahajfskdfhsz",
@@ -334,7 +332,7 @@ create_long_names(Config) when is_list(Config) ->
?line AFile = filename:join(DeepDir, "a_file"),
?line Hello = "hello, world\n",
?line ok = file:write_file(AFile, Hello),
- ?line TarName = filename:join(PrivDir, "my_tar_with_long_names.tar"),
+ ?line TarName = filename:join(Dir, "my_tar_with_long_names.tar"),
?line ok = erl_tar:create(TarName, [AFile]),
%% Print contents.
@@ -347,9 +345,6 @@ create_long_names(Config) when is_list(Config) ->
?line {ok, Bin} = file:read_file(filename:join(ExtractDir, AFile)),
?line Hello = binary_to_list(Bin),
- %% Clean up.
- ?line delete_files([ExtractDir,TarName,hd(Dirs)]),
-
ok.
make_dirs([Dir|Rest], []) ->
@@ -734,3 +729,42 @@ delete_files([Item|Rest]) ->
end,
delete_files(Rest).
+%% Move to a temporary directory with as short name as possible and
+%% execute Fun. Remove the directory and any files in it afterwards.
+%% This is necessary because pathnames on Windows may be limited to
+%% 260 characters.
+run_in_short_tempdir(Config, Fun) ->
+ {ok,Cwd} = file:get_cwd(),
+ PrivDir0 = ?config(priv_dir, Config),
+
+ %% Normalize name to make sure that there is no slash at the end.
+ PrivDir = filename:absname(PrivDir0),
+
+ %% We need a base directory with a much shorter pathname than
+ %% priv_dir. We KNOW that priv_dir is located four levels below
+ %% the directory that common_test puts the ct_run.* directories
+ %% in. That fact is not documented, but an usually reliable source
+ %% assured me that the directory structure is unlikely to change
+ %% in future versions of common_test because of backward
+ %% compatibility (tools developed by users of common_test depend
+ %% on the current directory layout).
+ Base = lists:foldl(fun(_, D) ->
+ filename:dirname(D)
+ end, PrivDir, [1,2,3,4]),
+
+ Dir = make_temp_dir(Base, 0),
+ ok = file:set_cwd(Dir),
+ io:format("Running test in ~s\n", [Dir]),
+ try
+ Fun()
+ after
+ file:set_cwd(Cwd),
+ delete_files([Dir])
+ end.
+
+make_temp_dir(Base, I) ->
+ Name = filename:join(Base, integer_to_list(I, 36)),
+ case file:make_dir(Name) of
+ ok -> Name;
+ {error,eexist} -> make_temp_dir(Base, I+1)
+ end.