Add testcases for IPC and basic focus switching

testcases/t/04-floating.t

@@ -6,6 +6,9 @@ use Test::Deep;
 use X11::XCB qw(:all);
 use Data::Dumper;
 use Time::HiRes qw(sleep);
+use FindBin;
+use lib "$FindBin::Bin/lib";
+use i3test;
 
 BEGIN {
     use_ok('X11::XCB::Window');

testcases/t/05-ipc.t

@@ -0,0 +1,51 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+
+use Test::More tests => 4;
+use Test::Deep;
+use X11::XCB qw(:all);
+use Data::Dumper;
+use Time::HiRes qw(sleep);
+use FindBin;
+use lib "$FindBin::Bin/lib";
+use i3test;
+
+BEGIN {
+    use_ok('IO::Socket::UNIX') or BAIL_OUT('Cannot load IO::Socket::UNIX');
+    use_ok('X11::XCB::Connection') or BAIL_OUT('Cannot load X11::XCB::Connection');
+}
+
+X11::XCB::Connection->connect(':0');
+
+my $sock = IO::Socket::UNIX->new(Peer => '/tmp/i3-ipc.sock');
+
+isa_ok($sock, 'IO::Socket::UNIX');
+
+
+#####################################################################
+# Ensure IPC works by switching workspaces
+#####################################################################
+
+# Switch to the first workspace to get a clean testing environment
+$sock->write(i3test::format_ipc_command("1"));
+
+sleep(0.25);
+
+# Create a window so we can get a focus different from NULL
+my $window = i3test::open_standard_window;
+diag("window->id = " . $window->id);
+
+sleep(0.25);
+
+my $focus = X11::XCB::Connection->input_focus;
+diag("old focus = $focus");
+
+# Switch to the nineth workspace
+$sock->write(i3test::format_ipc_command("9"));
+
+sleep(0.25);
+
+my $new_focus = X11::XCB::Connection->input_focus;
+isnt($focus, $new_focus, "Focus changed");
+
+diag( "Testing i3, Perl $], $^X" );

testcases/t/06-focus.t

@@ -0,0 +1,77 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+# Beware that this test uses workspace 9 to perform some tests (it expects
+# the workspace to be empty).
+# TODO: skip it by default?
+
+use Test::More tests => 8;
+use Test::Deep;
+use X11::XCB qw(:all);
+use Data::Dumper;
+use Time::HiRes qw(sleep);
+use FindBin;
+use lib "$FindBin::Bin/lib";
+use i3test;
+
+BEGIN {
+    use_ok('IO::Socket::UNIX') or BAIL_OUT('Cannot load IO::Socket::UNIX');
+    use_ok('X11::XCB::Connection') or BAIL_OUT('Cannot load X11::XCB::Connection');
+}
+
+X11::XCB::Connection->connect(':0');
+
+my $sock = IO::Socket::UNIX->new(Peer => '/tmp/i3-ipc.sock');
+isa_ok($sock, 'IO::Socket::UNIX');
+
+# Switch to the nineth workspace
+$sock->write(i3test::format_ipc_command("9"));
+
+sleep(0.25);
+
+#####################################################################
+# Create two windows and make sure focus switching works
+#####################################################################
+
+my $top = i3test::open_standard_window;
+sleep(0.25);
+my $mid = i3test::open_standard_window;
+sleep(0.25);
+my $bottom = i3test::open_standard_window;
+sleep(0.25);
+
+diag("top id = " . $top->id);
+diag("mid id = " . $mid->id);
+diag("bottom id = " . $bottom->id);
+
+#
+# Returns the input focus after sending the given command to i3 via IPC
+# end sleeping for half a second to make sure i3 reacted
+#
+sub focus_after {
+    my $msg = shift;
+
+    $sock->write(i3test::format_ipc_command($msg));
+    sleep(0.5);
+    return X11::XCB::Connection->input_focus;
+}
+
+$focus = X11::XCB::Connection->input_focus;
+is($focus, $bottom->id, "Latest window focused");
+
+$focus = focus_after("k");
+is($focus, $mid->id, "Middle window focused");
+
+$focus = focus_after("k");
+is($focus, $top->id, "Top window focused");
+
+#####################################################################
+# Test focus wrapping
+#####################################################################
+
+$focus = focus_after("k");
+is($focus, $bottom->id, "Bottom window focused (wrapping to the top works)");
+
+$focus = focus_after("j");
+is($focus, $top->id, "Top window focused (wrapping to the bottom works)");
+
+diag( "Testing i3, Perl $], $^X" );

testcases/t/lib/i3test.pm

@@ -0,0 +1,36 @@
+package i3test;
+# vim:ts=4:sw=4:expandtab
+
+use X11::XCB::Rect;
+use X11::XCB::Window;
+use X11::XCB qw(:all);
+
+sub open_standard_window {
+    my $original_rect = X11::XCB::Rect->new(x => 0, y => 0, width => 30, height => 30);
+
+    my $window = X11::XCB::Window->new(
+        class => WINDOW_CLASS_INPUT_OUTPUT,
+        rect => $original_rect,
+        background_color => 12632256,
+    );
+
+    $window->create;
+    $window->map;
+
+    sleep(0.25);
+
+    return $window;
+}
+
+sub format_ipc_command {
+    my $msg = shift;
+    my $len;
+
+    { use bytes; $len = length($msg); }
+
+    my $message = "i3-ipc" . pack("LL", $len, 0) . $msg;
+
+    return $message;
+}
+
+1