a99ab1fbc1
This will remove all state directories related to CUPS on startup, which is particularly useful for guaranteeing that printer discovery works more reliably on some networks, since CUPS will no longer be able to store state that effects the next run of the service, such as old printer names and mDNS information. Co-authored-by: Sandro <sandro.jaeckel@gmail.com>
129 lines
4.9 KiB
Nix
129 lines
4.9 KiB
Nix
# Test printing via CUPS.
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import ./make-test-python.nix ({pkgs, ... }:
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let
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printingServer = startWhenNeeded: {
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services.printing.enable = true;
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services.printing.stateless = true;
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services.printing.startWhenNeeded = startWhenNeeded;
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services.printing.listenAddresses = [ "*:631" ];
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services.printing.defaultShared = true;
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services.printing.extraConf = ''
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<Location />
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Order allow,deny
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Allow from all
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</Location>
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'';
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networking.firewall.allowedTCPPorts = [ 631 ];
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# Add a HP Deskjet printer connected via USB to the server.
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hardware.printers.ensurePrinters = [{
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name = "DeskjetLocal";
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deviceUri = "usb://foobar/printers/foobar";
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model = "drv:///sample.drv/deskjet.ppd";
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}];
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};
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printingClient = startWhenNeeded: {
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services.printing.enable = true;
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services.printing.startWhenNeeded = startWhenNeeded;
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# Add printer to the client as well, via IPP.
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hardware.printers.ensurePrinters = [{
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name = "DeskjetRemote";
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deviceUri = "ipp://${if startWhenNeeded then "socketActivatedServer" else "serviceServer"}/printers/DeskjetLocal";
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model = "drv:///sample.drv/deskjet.ppd";
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}];
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hardware.printers.ensureDefaultPrinter = "DeskjetRemote";
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};
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in {
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name = "printing";
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meta = with pkgs.lib.maintainers; {
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maintainers = [ domenkozar eelco matthewbauer ];
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};
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nodes = {
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socketActivatedServer = { ... }: (printingServer true);
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serviceServer = { ... }: (printingServer false);
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socketActivatedClient = { ... }: (printingClient true);
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serviceClient = { ... }: (printingClient false);
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};
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testScript = ''
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import os
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import re
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start_all()
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with subtest("Make sure that cups is up on both sides and printers are set up"):
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serviceServer.wait_for_unit("cups.service")
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serviceClient.wait_for_unit("cups.service")
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socketActivatedClient.wait_for_unit("ensure-printers.service")
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def test_printing(client, server):
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assert "scheduler is running" in client.succeed("lpstat -r")
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with subtest("UNIX socket is used for connections"):
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assert "/var/run/cups/cups.sock" in client.succeed("lpstat -H")
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with subtest("HTTP server is available too"):
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client.succeed("curl --fail http://localhost:631/")
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client.succeed(f"curl --fail http://{server.name}:631/")
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server.fail(f"curl --fail --connect-timeout 2 http://{client.name}:631/")
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with subtest("LP status checks"):
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assert "DeskjetRemote accepting requests" in client.succeed("lpstat -a")
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assert "DeskjetLocal accepting requests" in client.succeed(
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f"lpstat -h {server.name}:631 -a"
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)
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client.succeed("cupsdisable DeskjetRemote")
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out = client.succeed("lpq")
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print(out)
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assert re.search(
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"DeskjetRemote is not ready.*no entries",
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client.succeed("lpq"),
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flags=re.DOTALL,
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)
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client.succeed("cupsenable DeskjetRemote")
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assert re.match(
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"DeskjetRemote is ready.*no entries", client.succeed("lpq"), flags=re.DOTALL
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)
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# Test printing various file types.
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for file in [
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"${pkgs.groff.doc}/share/doc/*/examples/mom/penguin.pdf",
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"${pkgs.groff.doc}/share/doc/*/meref.ps",
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"${pkgs.cups.out}/share/doc/cups/images/cups.png",
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"${pkgs.pcre.doc}/share/doc/pcre/pcre.txt",
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]:
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file_name = os.path.basename(file)
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with subtest(f"print {file_name}"):
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# Print the file on the client.
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print(client.succeed("lpq"))
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client.succeed(f"lp {file}")
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client.wait_until_succeeds(
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f"lpq; lpq | grep -q -E 'active.*root.*{file_name}'"
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)
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# Ensure that a raw PCL file appeared in the server's queue
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# (showing that the right filters have been applied). Of
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# course, since there is no actual USB printer attached, the
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# file will stay in the queue forever.
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server.wait_for_file("/var/spool/cups/d*-001")
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server.wait_until_succeeds(f"lpq -a | grep -q -E '{file_name}'")
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# Delete the job on the client. It should disappear on the
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# server as well.
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client.succeed("lprm")
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client.wait_until_succeeds("lpq -a | grep -q -E 'no entries'")
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retry(lambda _: "no entries" in server.succeed("lpq -a"))
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# The queue is empty already, so this should be safe.
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# Otherwise, pairs of "c*"-"d*-001" files might persist.
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server.execute("rm /var/spool/cups/*")
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test_printing(serviceClient, serviceServer)
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test_printing(socketActivatedClient, socketActivatedServer)
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'';
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})
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