test_create_torrent fails when built from the release archive

[graywolf]

Please provide the following information

libtorrent version (or branch): v2.0.9 tag
platform/architecture: linux/x86_64

1. Download https://github.com/arvidn/libtorrent/releases/download/v2.0.9/libtorrent-rasterbar-2.0.9.tar.gz
2. Build it and try to run test_create_torrent
3. See this error:

Test #16: test_create_torrent ..............***Failed    0.01 sec
test: /tmp/guix-build-libtorrent-rasterbar-2.0.9.drv-0/build/test/test_create_torrent
cwd_prefix = "/tmp/guix-build-libtorrent-rasterbar-2.0.9.drv-0/build/test/test_tmp_4305_"
[/tmp/guix-build-libtorrent-rasterbar-2.0.9.drv-0/libtorrent-rasterbar-2.0.9/test/test_create_torrent.cpp.create_torrent_round_trip_empty_file]

cwd: /tmp/guix-build-libtorrent-rasterbar-2.0.9.drv-0/build/test/test_tmp_4305_8
test-case: /tmp/guix-build-libtorrent-rasterbar-2.0.9.drv-0/libtorrent-rasterbar-2.0.9/test/test_create_torrent.cpp.create_torrent_round_trip_empty_file
rnd = b80473f4

***** /tmp/guix-build-libtorrent-rasterbar-2.0.9.drv-0/libtorrent-rasterbar-2.0.9/test/test_create_torrent.cpp:170 "TEST_ERROR: check failed: "ret == 0"" *****


***** /tmp/guix-build-libtorrent-rasterbar-2.0.9.drv-0/libtorrent-rasterbar-2.0.9/test/test_create_torrent.cpp:171 "TEST_ERROR: check failed: "!ec"" *****


***** /tmp/guix-build-libtorrent-rasterbar-2.0.9.drv-0/libtorrent-rasterbar-2.0.9/test/main.cpp:520 "TEST_ERROR: Terminated with system_error: (3) [bdecode] "unexpected end of file in bencoded string"" *****

Failed to remove unit test directory: No such file or directory

For some reason it looks like test/test_torrents/v2_empty_file.torrent is not part of the source archive. Copying it from the v2.0.9 git tag into the directory extracted from the archive makes the test pass.

[arvidn]

thanks for the report!
#7612