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login test: Create and use direct reads of the TTY contents.

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This commit is contained in:
Graham Christensen 2016-11-29 23:58:21 -05:00
parent b09435ea51
commit cb74fd75d7
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2 changed files with 28 additions and 2 deletions
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25
nixos/lib/test-driver/Machine.pm
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@ -504,6 +504,31 @@ sub screenshot {
}, { image => $name } );
}
# Get the text of TTY<n>
sub getTTYText {
my ($self, $tty) = @_;
my ($status, $out) = $self->execute("fold -w 80 /dev/vcs${tty}");
return $out;
}
# Wait until TTY<n>'s text matches a particular regular expression
sub waitUntilTTYMatches {
my ($self, $tty, $regexp) = @_;
$self->nest("waiting for $regexp to appear on tty $tty", sub {
retry sub {
return 1 if $self->getTTYText($tty) =~ /$regexp/;
}
});
}
# Debugging: Dump the contents of the TTY<n>
sub dumpTTYContents {
my ($self, $tty) = @_;
$self->execute("fold -w 80 /dev/vcs${tty} | systemd-cat");
}
# Take a screenshot and return the result as text using optical character
# recognition.

5
nixos/tests/login.nix
View File

@ -33,10 +33,11 @@ import ./make-test.nix ({ pkgs, latestKernel ? false, ... }:
# Log in as alice on a virtual console.
subtest "virtual console login", sub {
$machine->sleep(2); # urgh: wait for username prompt
$machine->waitUntilTTYMatches(2, "login: ");
$machine->sendChars("alice\n");
$machine->waitUntilTTYMatches(2, "login: alice");
$machine->waitUntilSucceeds("pgrep login");
$machine->sleep(2); # urgh: wait for `Password:'
$machine->waitUntilTTYMatches(2, "Password: ");
$machine->sendChars("foobar\n");
$machine->waitUntilSucceeds("pgrep -u alice bash");
$machine->sendChars("touch done\n");