ok(defined($ws), "workspace aa: $tmp was created");
is($ws->{num}, -1, 'workspace number is -1');
+################################################################################
+# Check that we can go to workspace "4: foo" with the command
+# "workspace number 4".
+################################################################################
+
+ok(!workspace_exists('4'), 'workspace 4 does not exist');
+ok(!workspace_exists('4: foo'), 'workspace 4: foo does not exist yet');
+cmd 'workspace 4: foo';
+ok(workspace_exists('4: foo'), 'workspace 4: foo was created');
+cmd 'open';
+
+cmd 'workspace 3';
+ok(workspace_exists('4: foo'), 'workspace 4: foo still open');
+cmd 'workspace number 4';
+is(focused_ws(), '4: foo', 'now on workspace 4: foo');
+ok(!workspace_exists('4'), 'workspace 4 still does not exist');
+
+################################################################################
+# Check that we "workspace number 5" will create workspace 5 if it does not yet
+# exist.
+################################################################################
+
+ok(!workspace_exists('5'), 'workspace 5 does not exist');
+cmd 'workspace number 5';
+ok(workspace_exists('5'), 'workspace 5 was created');
+
+################################################################################
+# Verify that renaming workspaces works.
+################################################################################
+
+sub workspace_numbers_sorted {
+ my ($name) = @_;
+ my $i3 = i3(get_socket_path());
+ my $tree = $i3->get_tree->recv;
+
+ my @outputs = @{$tree->{nodes}};
+ my @workspaces;
+ for my $output (@outputs) {
+ # get the first CT_CON of each output
+ my $content = first { $_->{type} == 2 } @{$output->{nodes}};
+ @workspaces = (@workspaces, @{$content->{nodes}});
+ }
+
+ my @numbers = grep { $_ != -1 } map { $_->{num} } @workspaces;
+ is_deeply(
+ [ sort { $a <=> $b } @numbers ],
+ \@numbers,
+ 'workspace numbers sorted');
+}
+
+# 1: numbered workspace
+cmd 'workspace 10';
+cmd 'open';
+cmd 'workspace 13';
+cmd 'open';
+
+workspace_numbers_sorted();
+
+cmd 'workspace 9';
+is(focused_ws(), '9', 'now on workspace 9');
+
+ok(!workspace_exists('12'), 'workspace 12 does not exist yet');
+cmd 'rename workspace 9 to 12';
+ok(!workspace_exists('9'), 'workspace 9 does not exist anymore');
+is(focused_ws(), '12', 'now on workspace 12');
+$ws = get_ws('12');
+is($ws->{num}, 12, 'number correctly changed');
+
+workspace_numbers_sorted();
+
+# 2: numbered + named workspace
+cmd 'workspace 9: foo';
+is(focused_ws(), '9: foo', 'now on workspace 9: foo');
+
+ok(!workspace_exists('11: bar'), 'workspace 11: bar does not exist yet');
+cmd 'rename workspace "9: foo" to "11: bar"';
+ok(!workspace_exists('9: foo'), 'workspace 9 does not exist anymore');
+is(focused_ws(), '11: bar', 'now on workspace 10');
+$ws = get_ws('11: bar');
+is($ws->{num}, 11, 'number correctly changed');
+workspace_numbers_sorted();
+# keep that one open, we need it later
+cmd 'open';
+
+# 3: named workspace
+cmd 'workspace bleh';
+is(focused_ws(), 'bleh', 'now on workspace bleh');
+
+ok(!workspace_exists('qux'), 'workspace qux does not exist yet');
+cmd 'rename workspace bleh to qux';
+ok(!workspace_exists('bleh'), 'workspace 9 does not exist anymore');
+is(focused_ws(), 'qux', 'now on workspace qux');
+$ws = get_ws('qux');
+is($ws->{num}, -1, 'number correctly changed');
+workspace_numbers_sorted();
+
+# 5: already existing workspace
+my $result = cmd 'rename workspace qux to 11: bar';
+ok(!$result->[0]->{success}, 'renaming workspace to an already existing one failed');
+
+# 6: non-existing old workspace (verify command result)
+$result = cmd 'rename workspace notexistant to bleh';
+ok(!$result->[0]->{success}, 'renaming workspace which does not exist failed');
+
+
done_testing;