nixpkgs/nixos/tests/firefox.nix

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import ./make-test-python.nix ({ pkgs, firefoxPackage, ... }: {
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name = "firefox";
meta = with pkgs.lib.maintainers; {
maintainers = [ eelco shlevy ];
};
machine =
{ pkgs, ... }:
{ imports = [ ./common/x11.nix ];
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environment.systemPackages = [
firefoxPackage
pkgs.xdotool
];
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# Need some more memory to record audio.
virtualisation.memorySize = "500";
# Create a virtual sound device, with mixing
# and all, for recording audio.
boot.kernelModules = [ "snd-aloop" ];
sound.enable = true;
sound.extraConfig = ''
pcm.!default {
type plug
slave.pcm pcm.dmixer
}
pcm.dmixer {
type dmix
ipc_key 1
slave {
pcm "hw:Loopback,0,0"
rate 48000
periods 128
period_time 0
period_size 1024
buffer_size 8192
}
}
pcm.recorder {
type hw
card "Loopback"
device 1
subdevice 0
}
'';
systemd.services.audio-recorder = {
description = "Record NixOS test audio to /tmp/record.wav";
script = "${pkgs.alsa-utils}/bin/arecord -D recorder -f S16_LE -r48000 /tmp/record.wav";
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};
};
testScript = ''
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from contextlib import contextmanager
@contextmanager
def audio_recording(machine: Machine) -> None:
"""
Perform actions while recording the
machine audio output.
"""
machine.systemctl("start audio-recorder")
yield
machine.systemctl("stop audio-recorder")
def wait_for_sound(machine: Machine) -> None:
"""
Wait until any sound has been emitted.
"""
machine.wait_for_file("/tmp/record.wav")
while True:
# Get at most 2M of the recording
machine.execute("tail -c 2M /tmp/record.wav > /tmp/last")
# Get the exact size
size = int(machine.succeed("stat -c '%s' /tmp/last").strip())
# Compare it against /dev/zero using `cmp` (skipping 50B of WAVE header).
# If some non-NULL bytes are found it returns 1.
status, output = machine.execute(
f"cmp -i 50 -n {size - 50} /tmp/last /dev/zero 2>&1"
)
if status == 1:
break
machine.sleep(2)
machine.wait_for_x()
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with subtest("Wait until Firefox has finished loading the Valgrind docs page"):
machine.execute(
"xterm -e 'firefox file://${pkgs.valgrind.doc}/share/doc/valgrind/html/index.html' &"
)
machine.wait_for_window("Valgrind")
machine.sleep(40)
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with subtest("Check whether Firefox can play sound"):
with audio_recording(machine):
machine.succeed(
"firefox file://${pkgs.sound-theme-freedesktop}/share/sounds/freedesktop/stereo/phone-incoming-call.oga &"
)
wait_for_sound(machine)
machine.copy_from_vm("/tmp/record.wav")
with subtest("Close sound test tab"):
machine.execute("xdotool key ctrl+w")
with subtest("Close default browser prompt"):
machine.execute("xdotool key space")
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with subtest("Wait until Firefox draws the developer tool panel"):
machine.sleep(10)
machine.succeed("xwininfo -root -tree | grep Valgrind")
machine.screenshot("screen")
'';
})