add testcase for changing workspaces

testcases/t/17-workspace.t

@@ -0,0 +1,48 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+#
+# Tests whether we can switch to a non-existant workspace
+# (necessary for further tests)
+#
+use Test::More tests => 2;
+use List::MoreUtils qw(all none);
+use Data::Dumper;
+use AnyEvent::I3;
+use File::Temp qw(tmpnam);
+use v5.10;
+
+my $i3 = i3("/tmp/nestedcons");
+
+sub get_workspace_names {
+	my $tree = $i3->get_workspaces->recv;
+	my @workspaces = map { @{$_->{nodes}} } @{$tree->{nodes}};
+	[ map { $_->{name} } @workspaces ]
+}
+
+sub workspace_exists {
+	my ($name) = @_;
+	($name ~~ @{get_workspace_names()})
+}
+
+sub get_unused_workspace {
+	my @names = get_workspace_names();
+	my $tmp;
+	do { $tmp = tmpnam() } while ($tmp ~~ @names);
+	$tmp
+}
+
+my $tmp = get_unused_workspace();
+diag("Temporary workspace name: $tmp\n");
+
+$i3->command("workspace $tmp")->recv;
+ok(workspace_exists($tmp), 'workspace created');
+
+my $otmp = get_unused_workspace();
+diag("Other temporary workspace name: $otmp\n");
+
+# As the old workspace was empty, it should get
+# cleaned up as we switch away from it
+$i3->command("workspace $otmp")->recv;
+ok(!workspace_exists($tmp), 'old workspace cleaned up');
+
+diag( "Testing i3, Perl $], $^X" );