Erlang

Erlang is not your typical programming language, see:

<https://en.wikipedia.org/wiki/Erlang_(programming_language)>

Running the tests: see:

• HOWTO/TESTING.md in the source package,

• https://github.com/erlang/otp/blob/15e2cf7d13ca66d024c3ca948a8ee2475e8acac0/HOWTO/TESTING.md (Erlang 22/buster)

debuild
export ERL_TOP=`pwd`
./otp_build tests

cd release/tests/test_server
erl -s ts install -s init stop

# all tests (several hours)
erl -s ts install -s ts run all_tests -s init stop

# one module (asn1):
erl
1> ts:run(asn1, [batch]).

# SSH requires port 22
service ssh stop
erl
1> ts:run(ssh, [batch]).

# It also has many errors in buster and stretch (even before ELTS)
# Individual suites may work better
1> ts:run(ssh, ssh_connection_SUITE, [batch]).
2> ts:run(ssh, ssh_protocol_SUITE, [batch]).
3> ts:run(ssh, ssh_protocol_SUITE, early_rce, [batch]).

# quit
2> <Ctrl+g>
User switch command
 --> q

An HTTP server can help browse the results:

python3 -m http.server --bind 0.0.0.0 8080

The following should work but doesn’t; Failed to start CTH, see the CT Log for details, except there’s no explanation in the CT Log.

mkdir out
ct_run -logdir out/ -suite lib/ssh/test/ssh_algorithms_SUITE.erl
# error

cd release/tests/test_server/
$ERL_TOP/bin/ct_run -suite ../compiler_test/andor_SUITE -case t_orelse
# error

Manual SSH testing:

• lib/ssh/doc/src/using_ssh.xml

• https://www.erlang.org/doc/apps/ssh/using_ssh.html

• Needs RSA PRIVATE KEY (ssh-keygen -m pem), not the newer OPENSSH PRIVATE KEY

• There are some errors in the doc (missing commas, etc.)

Copyright (C) 2025 Sylvain Beucler