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# Test printing via CUPS.
import ./make-test-python.nix ({pkgs, ... }:
let
printingServer = startWhenNeeded: {
services.printing.enable = true;
services.printing.startWhenNeeded = startWhenNeeded;
services.printing.listenAddresses = [ "*:631" ];
services.printing.defaultShared = true;
services.printing.extraConf = ''
<Location />
Order allow,deny
Allow from all
</Location>
'';
networking.firewall.allowedTCPPorts = [ 631 ];
# Add a HP Deskjet printer connected via USB to the server.
hardware.printers.ensurePrinters = [{
name = "DeskjetLocal";
deviceUri = "usb://foobar/printers/foobar";
model = "drv:///sample.drv/deskjet.ppd";
}];
};
printingClient = startWhenNeeded: {
services.printing.enable = true;
services.printing.startWhenNeeded = startWhenNeeded;
# Add printer to the client as well, via IPP.
hardware.printers.ensurePrinters = [{
name = "DeskjetRemote";
deviceUri = "ipp://${if startWhenNeeded then "socketActivatedServer" else "serviceServer"}/printers/DeskjetLocal";
model = "drv:///sample.drv/deskjet.ppd";
}];
hardware.printers.ensureDefaultPrinter = "DeskjetRemote";
};
in {
name = "printing";
meta = with pkgs.lib.maintainers; {
maintainers = [ domenkozar eelco matthewbauer ];
};
nodes = {
socketActivatedServer = { ... }: (printingServer true);
serviceServer = { ... }: (printingServer false);
socketActivatedClient = { ... }: (printingClient true);
serviceClient = { ... }: (printingClient false);
};
testScript = ''
import os
import re
start_all()
with subtest("Make sure that cups is up on both sides and printers are set up"):
serviceServer.wait_for_unit("cups.service")
serviceClient.wait_for_unit("cups.service")
socketActivatedClient.wait_for_unit("ensure-printers.service")
def test_printing(client, server):
assert "scheduler is running" in client.succeed("lpstat -r")
with subtest("UNIX socket is used for connections"):
assert "/var/run/cups/cups.sock" in client.succeed("lpstat -H")
with subtest("HTTP server is available too"):
client.succeed("curl --fail http://localhost:631/")
client.succeed(f"curl --fail http://{server.name}:631/")
server.fail(f"curl --fail --connect-timeout 2 http://{client.name}:631/")
with subtest("LP status checks"):
assert "DeskjetRemote accepting requests" in client.succeed("lpstat -a")
assert "DeskjetLocal accepting requests" in client.succeed(
f"lpstat -h {server.name}:631 -a"
)
client.succeed("cupsdisable DeskjetRemote")
out = client.succeed("lpq")
print(out)
assert re.search(
"DeskjetRemote is not ready.*no entries",
client.succeed("lpq"),
flags=re.DOTALL,
)
client.succeed("cupsenable DeskjetRemote")
assert re.match(
"DeskjetRemote is ready.*no entries", client.succeed("lpq"), flags=re.DOTALL
)
# Test printing various file types.
for file in [
"${pkgs.groff.doc}/share/doc/*/examples/mom/penguin.pdf",
"${pkgs.groff.doc}/share/doc/*/meref.ps",
"${pkgs.cups.out}/share/doc/cups/images/cups.png",
"${pkgs.pcre.doc}/share/doc/pcre/pcre.txt",
]:
file_name = os.path.basename(file)
with subtest(f"print {file_name}"):
# Print the file on the client.
print(client.succeed("lpq"))
client.succeed(f"lp {file}")
client.wait_until_succeeds(
f"lpq; lpq | grep -q -E 'active.*root.*{file_name}'"
)
# Ensure that a raw PCL file appeared in the server's queue
# (showing that the right filters have been applied). Of
# course, since there is no actual USB printer attached, the
# file will stay in the queue forever.
server.wait_for_file("/var/spool/cups/d*-001")
server.wait_until_succeeds(f"lpq -a | grep -q -E '{file_name}'")
# Delete the job on the client. It should disappear on the
# server as well.
client.succeed("lprm")
client.wait_until_succeeds("lpq -a | grep -q -E 'no entries'")
retry(lambda _: "no entries" in server.succeed("lpq -a"))
# The queue is empty already, so this should be safe.
# Otherwise, pairs of "c*"-"d*-001" files might persist.
server.execute("rm /var/spool/cups/*")
test_printing(serviceClient, serviceServer)
test_printing(socketActivatedClient, socketActivatedServer)
'';
})
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