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tests: stop using OCR for nix copy tests

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this is fragile, slow as fuck, breaks constantly under high concurrency,
and completely unnecessary since ssh bypasses the stdio file descriptors
*anyway*. we do still check that we see ssh messages to ensure that none
of our subprocess handling messes with ssh's /dev/tty, but that's it now

Change-Id: Ib8e31e1999f813d07a27efc63a9d3454a9e4fcdd
This commit is contained in:
eldritch horrors 2024-10-25 16:04:08 +02:00
parent b020d1fc27
commit 59e364c2a8
1 changed files with 17 additions and 19 deletions
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36
tests/nixos/nix-copy.nix
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@ -38,7 +38,6 @@ in {
{ services.openssh.enable = true;
services.openssh.settings.PermitRootLogin = "yes";
users.users.root.hashedPasswordFile = lib.mkForce null;
users.users.root.password = "foobar";
virtualisation.writableStore = true;
virtualisation.additionalPaths = [ pkgB pkgC ];
};
@ -59,34 +58,33 @@ in {
client.succeed("systemctl start network-online.target")
server.wait_for_unit("network-online.target")
client.wait_for_unit("network-online.target")
server.wait_for_unit("multi-user.target")
client.wait_for_unit("multi-user.target")
server.wait_for_unit("sshd.service")
client.wait_for_unit("getty@tty1.service")
# Either the prompt: ]#
# or an OCR misreading of it: 1#
client.wait_for_text("[]1]#")
# Copy the closure of package A from the client to the server using password authentication,
# and check that all prompts are visible
# NOTE: this used to also check password prompts, but the test implementation was monumentally
# fragile (and hence broke constantly). since ssh interacts with /dev/tty directly fixing this
# requires some proper cli automation, which we do not have. however, since ssh interacts with
# /dev/tty directly and the host key message goes there too, we don't even need to check this.
server.fail("nix-store --check-validity ${pkgA}")
client.send_chars("nix copy --to ssh://server ${pkgA} >&2; echo done\n")
client.wait_for_text("continue connecting")
client.send_chars("yes\n")
client.wait_for_text("Password:")
client.send_chars("foobar\n")
client.wait_for_text("done")
server.succeed("nix-store --check-validity ${pkgA}")
# Check that ControlMaster is working
client.send_chars("nix copy --to ssh://server ${pkgA} >&2; echo done\n")
client.wait_for_text("done")
client.copy_from_host("key", "/root/.ssh/id_ed25519")
client.succeed("chmod 600 /root/.ssh/id_ed25519")
client.succeed("echo | script -f /dev/stdout -c 'nix copy --to ssh://server ${pkgA}' | grep 'continue connecting'")
client.copy_from_host("key", "/root/.ssh/id_ed25519.setup")
client.succeed("chmod 600 /root/.ssh/id_ed25519.setup")
# Install the SSH key on the server.
server.copy_from_host("key.pub", "/root/.ssh/authorized_keys")
server.succeed("systemctl restart sshd")
client.succeed("NIX_SSHOPTS='-oStrictHostKeyChecking=no -i /root/.ssh/id_ed25519.setup' nix copy --to ssh://server ${pkgA}")
server.succeed("nix-store --check-validity ${pkgA}")
# Check that ControlMaster is working
client.succeed("nix copy --to ssh://server ${pkgA}")
client.succeed("cp /root/.ssh/id_ed25519.setup /root/.ssh/id_ed25519")
client.succeed(f"ssh -o StrictHostKeyChecking=no {server.name} 'echo hello world' >&2")
client.succeed(f"ssh -O check {server.name}")
client.succeed(f"ssh -O exit {server.name}")