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-rw-r--r--utils/t/update_alternatives.t568
1 files changed, 568 insertions, 0 deletions
diff --git a/utils/t/update_alternatives.t b/utils/t/update_alternatives.t
new file mode 100644
index 0000000..c80edba
--- /dev/null
+++ b/utils/t/update_alternatives.t
@@ -0,0 +1,568 @@
+#!/usr/bin/perl
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use Test::More;
+
+use File::Spec;
+
+use Dpkg::IPC;
+use Dpkg::File qw(file_slurp);
+use Dpkg::Path qw(find_command);
+
+my $srcdir = $ENV{srcdir} || '.';
+my $tmpdir = 't.tmp/update_alternatives';
+my $admindir = File::Spec->rel2abs("$tmpdir/admindir"),
+my $altdir = File::Spec->rel2abs("$tmpdir/alternatives");
+my $bindir = File::Spec->rel2abs("$tmpdir/bin");
+my @ua = ("$ENV{builddir}/update-alternatives", '--log', '/dev/null',
+ '--quiet', '--admindir', "$admindir", '--altdir', "$altdir");
+
+my %paths = (
+ true => find_command('true'),
+ false => find_command('false'),
+ yes => find_command('yes'),
+ cat => find_command('cat'),
+ date => find_command('date'),
+ sleep => find_command('sleep'),
+);
+
+if (! -x "$ENV{builddir}/update-alternatives") {
+ plan skip_all => 'update-alternatives not available';
+ exit(0);
+}
+
+my $main_link = "$bindir/generic-test";
+my $main_name = 'generic-test';
+my @choices = (
+ {
+ path => $paths{true},
+ priority => 20,
+ slaves => [
+ {
+ link => "$bindir/slave2",
+ name => 'slave2',
+ path => $paths{cat},
+ },
+ {
+ link => "$bindir/slave3",
+ name => 'slave3',
+ path => $paths{cat},
+ },
+ {
+ link => "$bindir/slave1",
+ name => 'slave1',
+ path => $paths{yes},
+ },
+ {
+ link => "$bindir/slave4",
+ name => 'slave4',
+ path => $paths{cat},
+ },
+ ],
+ },
+ {
+ path => $paths{false},
+ priority => 10,
+ slaves => [
+ {
+ link => "$bindir/slave1",
+ name => 'slave1',
+ path => $paths{date},
+ },
+ ],
+ },
+ {
+ path => $paths{sleep},
+ priority => 5,
+ slaves => [],
+ },
+);
+my $nb_slaves = 4;
+plan tests => (4 * ($nb_slaves + 1) + 2) * 26 # number of check_choices
+ + 110; # rest
+
+sub cleanup {
+ system("rm -rf $tmpdir && mkdir -p $admindir && mkdir -p $altdir");
+ system("mkdir -p $bindir/more");
+}
+
+sub call_ua {
+ my ($params, %opts) = @_;
+ spawn(exec => [ @ua, @$params ], nocheck => 1,
+ wait_child => 1, env => { LC_ALL => 'C' }, %opts);
+ my $test_id = '';
+ $test_id = "$opts{test_id}: " if defined $opts{test_id};
+ if ($opts{expect_failure}) {
+ ok($? != 0, "${test_id}update-alternatives @$params should fail.") or
+ diag("Did not fail as expected: @ua @$params");
+ } else {
+ ok($? == 0, "${test_id}update-alternatives @$params should work.") or
+ diag("Did not succeed as expected: @ua @$params");
+ }
+}
+
+sub install_choice {
+ my ($id, %opts) = @_;
+ my $alt = $choices[$id];
+ my @params;
+ push @params, @{$opts{params}} if exists $opts{params};
+ push @params, '--install', "$main_link", "$main_name",
+ $alt->{path}, $alt->{priority};
+ foreach my $slave (@{ $alt->{slaves} }) {
+ push @params, '--slave', $slave->{link}, $slave->{name}, $slave->{path};
+ }
+ call_ua(\@params, %opts);
+}
+
+sub remove_choice {
+ my ($id, %opts) = @_;
+ my $alt = $choices[$id];
+ my @params;
+ push @params, @{$opts{params}} if exists $opts{params};
+ push @params, '--remove', $main_name, $alt->{path};
+ call_ua(\@params, %opts);
+}
+
+sub remove_all_choices {
+ my (%opts) = @_;
+ my @params;
+ push @params, @{$opts{params}} if exists $opts{params};
+ push @params, '--remove-all', $main_name;
+ call_ua(\@params, %opts);
+}
+
+sub set_choice {
+ my ($id, %opts) = @_;
+ my $alt = $choices[$id];
+ my @params;
+ push @params, @{$opts{params}} if exists $opts{params};
+ push @params, '--set', $main_name, $alt->{path};
+ call_ua(\@params, %opts);
+}
+
+sub config_choice {
+ my ($id, %opts) = @_;
+ my ($input, $output) = ('', '');
+ if ($id >= 0) {
+ my $alt = $choices[$id];
+ $input = $alt->{path};
+ } else {
+ $input = '0';
+ }
+ $input .= "\n";
+ $opts{from_string} = \$input;
+ $opts{to_string} = \$output;
+ my @params;
+ push @params, @{$opts{params}} if exists $opts{params};
+ push @params, '--config', $main_name;
+ call_ua(\@params, %opts);
+}
+
+sub get_slaves_status {
+ my ($id) = @_;
+ my %slaves;
+ # None of the slaves are installed
+ foreach my $alt (@choices) {
+ for my $i (0 .. @{$alt->{slaves}} - 1) {
+ $slaves{$alt->{slaves}[$i]{name}} = $alt->{slaves}[$i];
+ $slaves{$alt->{slaves}[$i]{name}}{installed} = 0;
+ }
+ }
+ # except those of the current alternative (minus optional slaves)
+ if (defined($id)) {
+ my $alt = $choices[$id];
+ for my $i (0 .. @{$alt->{slaves}} - 1) {
+ $slaves{$alt->{slaves}[$i]{name}} = $alt->{slaves}[$i];
+ if (-e $alt->{slaves}[$i]{path}) {
+ $slaves{$alt->{slaves}[$i]{name}}{installed} = 1;
+ }
+ }
+ }
+ my @slaves = sort { $a->{name} cmp $b->{name} } values %slaves;
+
+ return @slaves;
+}
+
+sub check_link {
+ my ($link, $value, $msg) = @_;
+ ok(-l $link, "$msg: $link disappeared.");
+ is(readlink($link), $value, "$link doesn't point to $value.");
+}
+sub check_no_link {
+ my ($link, $msg) = @_;
+ lstat($link);
+ ok(!-e _, "$msg: $link still exists.");
+ ok(1, 'fake test'); # Same number of tests as check_link
+}
+
+sub check_slaves {
+ my ($id, $msg) = @_;
+ foreach my $slave (get_slaves_status($id)) {
+ if ($slave->{installed}) {
+ check_link("$altdir/$slave->{name}", $slave->{path}, $msg);
+ check_link($slave->{link}, "$altdir/$slave->{name}", $msg);
+ } else {
+ check_no_link("$altdir/$slave->{name}", $msg);
+ check_no_link($slave->{link}, $msg);
+ }
+ }
+}
+# (4 * (nb_slaves+1) + 2) tests in each check_choice() call
+sub check_choice {
+ my ($id, $mode, $msg) = @_;
+ my $output;
+ if (defined $id) {
+ # Check status
+ call_ua([ '--query', "$main_name" ], to_string => \$output, test_id => $msg);
+ $output =~ /^Status: (.*)$/im;
+ is($1, $mode, "$msg: status is not $mode.");
+ # Check links
+ my $alt = $choices[$id];
+ check_link("$altdir/$main_name", $alt->{path}, $msg);
+ check_link($main_link, "$altdir/$main_name", $msg);
+ check_slaves($id, $msg);
+ } else {
+ call_ua([ '--query', "$main_name" ], error_to_string => \$output,
+ expect_failure => 1, test_id => $msg);
+ ok($output =~ /no alternatives/, "$msg: bad error message for --query.");
+ # Check that all links have disappeared
+ check_no_link("$altdir/$main_name", $msg);
+ check_no_link($main_link, $msg);
+ check_slaves(undef, $msg);
+ }
+}
+
+### START OF TESTS
+cleanup();
+# removal when not installed should not fail
+remove_choice(0);
+# successive install in auto mode
+install_choice(1);
+check_choice(1, 'auto', 'initial install 1');
+install_choice(2); # 2 is lower prio, stays at 1
+check_choice(1, 'auto', 'initial install 2');
+install_choice(0); # 0 is higher priority
+check_choice(0, 'auto', 'initial install 3');
+
+# verify that the administrative file is sorted properly
+{
+ my $content = file_slurp("$admindir/generic-test");
+ my $expected =
+"auto
+$bindir/generic-test
+slave1
+$bindir/slave1
+slave2
+$bindir/slave2
+slave3
+$bindir/slave3
+slave4
+$bindir/slave4
+
+";
+
+ my %slaves;
+
+ # Store slaves in a hash to easily retrieve present and missing ones.
+ foreach my $alt (@choices) {
+ foreach my $slave (@{$alt->{slaves}}) {
+ $slaves{$slave->{name}}{$alt->{path}} = $slave;
+ }
+ }
+
+ foreach my $alt (sort { $a->{path} cmp $b->{path} } @choices) {
+ $expected .= $alt->{path} . "\n";
+ $expected .= $alt->{priority} . "\n";
+ foreach my $slave_name (sort keys %slaves) {
+ $expected .= $slaves{$slave_name}{$alt->{path}}{path} || '';
+ $expected .= "\n";
+ }
+ }
+ $expected .= "\n";
+
+ is($content, $expected, 'administrative file is as expected');
+}
+
+# manual change with --set-selections
+my $input = "doesntexist auto $paths{date}\ngeneric-test manual $paths{false}\n";
+my $output = '';
+call_ua(['--set-selections'], from_string => \$input,
+ to_string => \$output, test_id => 'manual update with --set-selections');
+check_choice(1, 'manual', 'manual update with --set-selections');
+$input = "generic-test auto $paths{true}\n";
+call_ua(['--set-selections'], from_string => \$input,
+ to_string => \$output, test_id => 'auto update with --set-selections');
+check_choice(0, 'auto', 'auto update with --set-selections');
+# manual change with set
+set_choice(2, test_id => 'manual update with --set');
+check_choice(2, 'manual', 'manual update with --set'); # test #388313
+remove_choice(2, test_id => 'remove manual, back to auto');
+check_choice(0, 'auto', 'remove manual, back to auto');
+remove_choice(0, test_id => 'remove best');
+check_choice(1, 'auto', 'remove best');
+remove_choice(1, test_id => 'no alternative left');
+check_choice(undef, '', 'no alternative left');
+# single choice in manual mode, to be removed
+install_choice(1);
+set_choice(1);
+check_choice(1, 'manual', 'single manual choice');
+remove_choice(1);
+check_choice(undef, '', 'removal single manual');
+# test --remove-all
+install_choice(0);
+install_choice(1);
+install_choice(2);
+remove_all_choices(test_id => 'remove all');
+check_choice(undef, '', 'no alternative left');
+# check auto-recovery of user mistakes (#100135)
+install_choice(1);
+ok(unlink("$bindir/generic-test"), 'failed removal');
+ok(unlink("$bindir/slave1"), 'failed removal');
+install_choice(1);
+check_choice(1, 'auto', 'recreate links in auto mode');
+set_choice(1);
+ok(unlink("$bindir/generic-test"), 'failed removal');
+ok(unlink("$bindir/slave1"), 'failed removal');
+install_choice(1);
+check_choice(1, 'manual', 'recreate links in manual mode');
+# check recovery of /etc/alternatives/*
+install_choice(0);
+ok(unlink("$altdir/generic-test"), 'failed removal');
+install_choice(1);
+check_choice(0, 'auto', '<altdir>/generic-test lost, back to auto');
+# test --config
+config_choice(0);
+check_choice(0, 'manual', 'config to best but manual');
+config_choice(1);
+check_choice(1, 'manual', 'config to manual');
+config_choice(-1);
+check_choice(0, 'auto', 'config auto');
+
+# test rename of links
+install_choice(0);
+my $old_slave = $choices[0]{slaves}[0]{link};
+my $old_link = $main_link;
+$choices[0]{slaves}[0]{link} = "$bindir/more/generic-slave";
+$main_link = "$bindir/more/mytest";
+install_choice(0);
+check_choice(0, 'auto', 'test rename of links');
+check_no_link($old_link, 'test rename of links');
+check_no_link($old_slave, 'test rename of links');
+# rename with installing other alternatives
+$old_link = $main_link;
+$main_link = "$bindir/generic-test";
+install_choice(1);
+check_choice(0, 'auto', 'rename link');
+check_no_link($old_link, 'rename link');
+# rename with lost file
+unlink($old_slave);
+$old_slave = $choices[0]{slaves}[0]{link};
+$choices[0]{slaves}[0]{link} = "$bindir/generic-slave-bis";
+install_choice(0);
+check_choice(0, 'auto', 'rename lost file');
+check_no_link($old_slave, 'rename lost file');
+# update of alternative with many slaves not currently installed
+# and the link of the renamed slave exists while it should not
+set_choice(1);
+symlink("$paths{cat}", "$bindir/generic-slave-bis");
+$choices[0]{slaves}[0]{link} = "$bindir/slave2";
+install_choice(0, test_id => 'update with non-installed slaves');
+check_no_link("$bindir/generic-slave-bis",
+ 'drop renamed symlink that should not be installed');
+
+# test install with empty admin file (#457863)
+cleanup();
+system("touch $admindir/generic-test");
+install_choice(0);
+# test install with garbage admin file
+cleanup();
+system("echo garbage > $admindir/generic-test");
+install_choice(0, error_to_file => '/dev/null', expect_failure => 1);
+
+# test invalid usages
+cleanup();
+install_choice(0);
+# try to install a slave alternative as new master
+call_ua(['--install', "$bindir/testmaster", 'slave1', "$paths{date}", '10'],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# try to install a master alternative as slave
+call_ua(['--install', "$bindir/testmaster", 'testmaster', "$paths{date}", '10',
+ '--slave', "$bindir/testslave", 'generic-test', "$paths{true}" ],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# try to reuse master link in slave
+call_ua(['--install', "$bindir/testmaster", 'testmaster', "$paths{date}", '10',
+ '--slave', "$bindir/testmaster", 'testslave', "$paths{true}" ],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# try to reuse links in master alternative
+call_ua(['--install', "$bindir/slave1", 'testmaster', "$paths{date}", '10'],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# try to reuse links in slave alternative
+call_ua(['--install', "$bindir/testmaster", 'testmaster', "$paths{date}", '10',
+ '--slave', "$bindir/generic-test", 'testslave', "$paths{true}" ],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# try to reuse slave link in another slave alternative of another choice of
+# the same main alternative
+call_ua(['--install', $main_link, $main_name, "$paths{date}", '10',
+ '--slave', "$bindir/slave1", 'testslave', "$paths{true}" ],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# lack of absolute filenames in links or file path, non-existing path,
+call_ua(['--install', '../testmaster', 'testmaster', "$paths{date}", '10'],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+call_ua(['--install', "$bindir/testmaster", 'testmaster', './update-alternatives.pl', '10'],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# non-existing alternative path
+call_ua(['--install', "$bindir/testmaster", 'testmaster', "$bindir/doesntexist", '10'],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# invalid alternative name in master
+call_ua(['--install', "$bindir/testmaster", 'test/master', "$paths{date}", '10'],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# invalid alternative name in slave
+call_ua(['--install', "$bindir/testmaster", 'testmaster', "$paths{date}", '10',
+ '--slave', "$bindir/testslave", 'test slave', "$paths{true}" ],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+# install in non-existing dir should fail
+call_ua(['--install', "$bindir/doesntexist/testmaster", 'testmaster', "$paths{date}", '10',
+ '--slave', "$bindir/testslave", 'testslave', "$paths{true}" ],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+call_ua(['--install', "$bindir/testmaster", 'testmaster', "$paths{date}", '10',
+ '--slave', "$bindir/doesntexist/testslave", 'testslave', "$paths{true}" ],
+ expect_failure => 1, to_file => '/dev/null', error_to_file => '/dev/null');
+
+# non-existing alternative path in slave is not a failure
+my $old_path = $choices[0]{slaves}[0]{path};
+$old_slave = $choices[0]{slaves}[0]{link};
+$choices[0]{slaves}[0]{path} = "$bindir/doesntexist";
+$choices[0]{slaves}[0]{link} = "$bindir/baddir/slave2";
+# test rename of slave link that existed but that doesn't anymore
+# and link is moved into non-existing dir at the same time
+install_choice(0);
+check_choice(0, 'auto', 'optional renamed slave2 in non-existing dir');
+# same but on fresh install
+cleanup();
+install_choice(0);
+check_choice(0, 'auto', 'optional slave2 in non-existing dir');
+$choices[0]{slaves}[0]{link} = $old_slave;
+# test fresh install with a non-existing slave file
+cleanup();
+install_choice(0);
+check_choice(0, 'auto', 'optional slave2');
+$choices[0]{slaves}[0]{path} = $old_path;
+
+# test management of pre-existing files
+cleanup();
+system("touch $main_link $bindir/slave1");
+install_choice(0);
+ok(!-l $main_link, 'install preserves files that should be links');
+ok(!-l "$bindir/slave1", 'install preserves files that should be slave links');
+remove_choice(0);
+ok(-f $main_link, 'removal keeps real file installed as master link');
+ok(-f "$bindir/slave1", 'removal keeps real files installed as slave links');
+install_choice(0, params => ['--force']);
+check_choice(0, 'auto', 'install --force replaces files with links');
+
+# test management of pre-existing files #2
+cleanup();
+system("touch $main_link $bindir/slave2");
+install_choice(0);
+install_choice(1);
+ok(!-l $main_link, 'inactive install preserves files that should be links');
+ok(!-l "$bindir/slave2", 'inactive install preserves files that should be slave links');
+ok(-f $main_link, 'inactive install keeps real file installed as master link');
+ok(-f "$bindir/slave2", 'inactive install keeps real files installed as slave links');
+set_choice(1);
+ok(!-l $main_link, 'manual switching preserves files that should be links');
+ok(!-l "$bindir/slave2", 'manual switching preserves files that should be slave links');
+ok(-f $main_link, 'manual switching keeps real file installed as master link');
+ok(-f "$bindir/slave2", 'manual switching keeps real files installed as slave links');
+remove_choice(1);
+ok(!-l $main_link, 'auto switching preserves files that should be links');
+ok(!-l "$bindir/slave2", 'auto switching preserves files that should be slave links');
+ok(-f $main_link, 'auto switching keeps real file installed as master link');
+ok(-f "$bindir/slave2", 'auto switching keeps real files installed as slave links');
+remove_all_choices(params => ['--force']);
+ok(!-e "$bindir/slave2", 'forced removeall drops real files installed as slave links');
+
+# test management of pre-existing files #3
+cleanup();
+system("touch $main_link $bindir/slave2");
+install_choice(0);
+install_choice(1);
+remove_choice(0);
+ok(!-l $main_link, 'removal + switching preserves files that should be links');
+ok(!-l "$bindir/slave2", 'removal + switching preserves files that should be slave links');
+ok(-f $main_link, 'removal + switching keeps real file installed as master link');
+ok(-f "$bindir/slave2", 'removal + switching keeps real files installed as slave links');
+install_choice(0);
+ok(!-l $main_link, 'install + switching preserves files that should be links');
+ok(!-l "$bindir/slave2", 'install + switching preserves files that should be slave links');
+ok(-f $main_link, 'install + switching keeps real file installed as master link');
+ok(-f "$bindir/slave2", 'install + switching keeps real files installed as slave links');
+set_choice(1, params => ['--force']);
+ok(!-e "$bindir/slave2", 'forced switching w/o slave drops real files installed as slave links');
+check_choice(1, 'manual', 'set --force replaces files with links');
+
+# check disappearence of obsolete slaves (#916799)
+cleanup();
+call_ua([
+ '--install', "$bindir/test-obsolete", 'test-obsolete', "$paths{date}", '10',
+ '--slave', "$bindir/test-slave-a", 'test-slave-a', "$bindir/impl-slave-a",
+ '--slave', "$bindir/test-slave-b", 'test-slave-b', "$bindir/impl-slave-b",
+ '--slave', "$bindir/test-slave-c", 'test-slave-c', "$bindir/impl-slave-c",
+], to_file => '/dev/null', error_to_file => '/dev/null');
+
+my $content;
+my $expected;
+
+$content = file_slurp("$admindir/test-obsolete");
+$expected =
+"auto
+$bindir/test-obsolete
+test-slave-a
+$bindir/test-slave-a
+test-slave-b
+$bindir/test-slave-b
+test-slave-c
+$bindir/test-slave-c
+
+$paths{date}
+10
+$bindir/impl-slave-a
+$bindir/impl-slave-b
+$bindir/impl-slave-c
+
+";
+is($content, $expected, 'administrative file for non-obsolete slaves is as expected');
+
+call_ua([
+ '--install', "$bindir/test-obsolete", 'test-obsolete', "$paths{date}", '20',
+ '--slave', "$bindir/test-slave-c", 'test-slave-c', "$bindir/impl-slave-c",
+], to_file => '/dev/null', error_to_file => '/dev/null');
+
+$content = file_slurp("$admindir/test-obsolete");
+$expected =
+"auto
+$bindir/test-obsolete
+test-slave-c
+$bindir/test-slave-c
+
+$paths{date}
+20
+$bindir/impl-slave-c
+
+";
+is($content, $expected, 'administrative file for obsolete slaves is as expected');