diff --git a/testcases/t/243-move-to-mark.t b/testcases/t/243-move-to-mark.t
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+++ b/testcases/t/243-move-to-mark.t
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+#!perl
+# vim:ts=4:sw=4:expandtab
+#
+# Please read the following documents before working on tests:
+# • http://build.i3wm.org/docs/testsuite.html
+#   (or docs/testsuite)
+#
+# • http://build.i3wm.org/docs/lib-i3test.html
+#   (alternatively: perldoc ./testcases/lib/i3test.pm)
+#
+# • http://build.i3wm.org/docs/ipc.html
+#   (or docs/ipc)
+#
+# • http://onyxneon.com/books/modern_perl/modern_perl_a4.pdf
+#   (unless you are already familiar with Perl)
+#
+# Tests for the 'move [window|container] to mark' command
+# Ticket: #1643
+use i3test;
+
+# In the following tests descriptions, we will always use the following names:
+#  * 'S' for the source container which is going to be moved,
+#  * 'M' for the marked target container to which 'S' will be moved.
+
+my ($A, $B, $S, $M, $F, $source_ws, $target_ws, $ws);
+my ($nodes, $focus);
+my $cmd_result;
+
+###############################################################################
+# Given 'M' and 'S' in a horizontal split, when 'S' is moved to 'M', then
+# verify that nothing changed.
+###############################################################################
+
+$ws = fresh_workspace;
+$M = open_window;
+cmd 'mark target';
+$S = open_window;
+
+cmd 'move container to mark target';
+sync_with_i3;
+
+($nodes, $focus) = get_ws_content($ws);
+is(@{$nodes}, 2, 'there are two containers');
+is($nodes->[0]->{window}, $M->{id}, 'M is left of S');
+is($nodes->[1]->{window}, $S->{id}, 'S is right of M');
+
+###############################################################################
+# Given 'S' and 'M' in a horizontal split, when 'S' is moved to 'M', then
+# both containers switch places.
+###############################################################################
+
+$ws = fresh_workspace;
+$S = open_window;
+$M = open_window;
+cmd 'mark target';
+cmd 'focus left';
+
+cmd 'move container to mark target';
+sync_with_i3;
+
+($nodes, $focus) = get_ws_content($ws);
+is(@{$nodes}, 2, 'there are two containers');
+is($nodes->[0]->{window}, $M->{id}, 'M is left of S');
+is($nodes->[1]->{window}, $S->{id}, 'S is right of M');
+
+###############################################################################
+# Given 'S' and no container 'M' exists, when 'S' is moved to 'M', then
+# the command is unsuccessful.
+###############################################################################
+
+$ws = fresh_workspace;
+$S = open_window;
+
+$cmd_result = cmd 'move container to mark absent';
+
+is($cmd_result->[0]->{success}, 0, 'command was unsuccessful');
+
+###############################################################################
+# Given 'S' and 'M' on different workspaces, when 'S' is moved to 'M', then
+# 'S' ends up on the same workspace as 'M'.
+###############################################################################
+
+$source_ws = fresh_workspace;
+$S = open_window;
+$target_ws = fresh_workspace;
+$M = open_window;
+cmd 'mark target';
+
+cmd '[id="' . $S->{id} . '"] move container to mark target';
+sync_with_i3;
+
+($nodes, $focus) = get_ws_content($source_ws);
+is(@{$nodes}, 0, 'source workspace is empty');
+
+($nodes, $focus) = get_ws_content($target_ws);
+is(@{$nodes}, 2, 'both containers are on the target workspace');
+is($nodes->[0]->{window}, $M->{id}, 'M is left of S');
+is($nodes->[1]->{window}, $S->{id}, 'S is right of M');
+
+###############################################################################
+# Given 'S' and 'M' on different workspaces and 'S' is urgent, when 'S' is 
+# moved to 'M', then the urgency flag is transferred to the target workspace.
+###############################################################################
+
+# TODO
+
+###############################################################################
+# Given 'S' and 'M' where 'M' is inside a tabbed container, when 'S' is moved
+# to 'M', then 'S' ends up as a new tab.
+###############################################################################
+
+$source_ws = fresh_workspace;
+$S = open_window;
+
+# open tabbed container ['A' 'M' 'B']
+$target_ws = fresh_workspace;
+cmd 'layout tabbed';
+$A = open_window;
+$M = open_window;
+cmd 'mark target';
+$B = open_window;
+
+cmd '[id="' . $S->{id} . '"] move container to mark target';
+sync_with_i3;
+
+($nodes, $focus) = get_ws_content($target_ws);
+is(@{$nodes}, 1, 'there is a tabbed container');
+
+$nodes = $nodes->[0]->{nodes};
+is(@{$nodes}, 4, 'all four containers are on the target workspace');
+is($nodes->[0]->{window}, $A->{id}, 'A is the first tab');
+is($nodes->[1]->{window}, $M->{id}, 'M is the second tab');
+is($nodes->[2]->{window}, $S->{id}, 'S is the third tab');
+is($nodes->[3]->{window}, $B->{id}, 'B is the fourth tab');
+
+###############################################################################
+# Given 'S' and 'M' where 'M' is a tabbed container where the currently focused
+# tab is a nested layout, when 'S' is moved to 'M', then 'S' is a new tab
+# within 'M'.
+###############################################################################
+
+$source_ws = fresh_workspace;
+$S = open_window;
+
+$target_ws = fresh_workspace;
+cmd 'layout tabbed';
+$A = open_window;
+cmd 'focus parent';
+cmd 'mark target';
+cmd 'focus child';
+$B = open_window;
+cmd 'split h';
+$F = open_window;
+
+cmd '[id="' . $S->{id} . '"] move container to mark target';
+sync_with_i3;
+
+($nodes, $focus) = get_ws_content($target_ws);
+is(@{$nodes}, 1, 'there is a tabbed container');
+
+$nodes = $nodes->[0]->{nodes};
+is(@{$nodes}, 3, 'there are three tabs');
+
+is($nodes->[0]->{window}, $A->{id}, 'A is the first tab');
+is($nodes->[2]->{window}, $S->{id}, 'S is the third tab');
+
+###############################################################################
+# Given 'S' and 'M' where 'M' is inside a split container inside a tabbed
+# container, when 'S' is moved to 'M', then 'S' ends up as a container
+# within the same tab as 'M'.
+###############################################################################
+
+$source_ws = fresh_workspace;
+$S = open_window;
+
+# open tabbed container ['A'['B' 'M']]
+$target_ws = fresh_workspace;
+cmd 'layout tabbed';
+$A = open_window;
+$B = open_window;
+cmd 'split h';
+$M = open_window;
+cmd 'mark target';
+
+cmd '[id="' . $S->{id} . '"] move container to mark target';
+sync_with_i3;
+
+($nodes, $focus) = get_ws_content($target_ws);
+is(@{$nodes}, 1, 'there is a tabbed container');
+
+$nodes = $nodes->[0]->{nodes};
+is(@{$nodes}, 2, 'there are two tabs');
+
+$nodes = $nodes->[1]->{nodes};
+is(@{$nodes}, 3, 'the tab with the marked children has three children');
+is($nodes->[0]->{window}, $B->{id}, 'B is the first tab');
+is($nodes->[1]->{window}, $M->{id}, 'M is the second tab');
+is($nodes->[2]->{window}, $S->{id}, 'S is the third tab');
+
+###############################################################################
+# Given 'S', 'A' and 'B' where 'A' and 'B' are inside the tabbed container 'M',
+# when 'S' is moved to 'M', then 'S' ends up as a new tab in 'M'.
+###############################################################################
+
+$source_ws = fresh_workspace;
+$S = open_window;
+$target_ws = fresh_workspace;
+cmd 'layout tabbed';
+$A = open_window;
+$B = open_window;
+cmd 'focus parent';
+cmd 'mark target';
+cmd 'focus child';
+
+cmd '[id="' . $S->{id} . '"] move container to mark target';
+sync_with_i3;
+
+($nodes, $focus) = get_ws_content($target_ws);
+is(@{$nodes}, 1, 'there is a tabbed container');
+
+$nodes = $nodes->[0]->{nodes};
+is(@{$nodes}, 3, 'there are three tabs');
+
+is($nodes->[0]->{window}, $A->{id}, 'A is the first tab');
+is($nodes->[1]->{window}, $B->{id}, 'B is the second tab');
+is($nodes->[2]->{window}, $S->{id}, 'S is the third tab');
+
+###############################################################################
+# Given 'S', 'F' and 'M' where 'F' and 'M' are containers inside the same
+# tabbed container and where 'F' has the focus within that container, when
+# 'S' is moved to 'M', then 'S' ends up behind 'F'.
+###############################################################################
+
+# TODO needs to be clarified whether this is the behavior we want
+
+###############################################################################
+# Given 'S' and 'M' where 'S' is floating and 'M' on a different workspace,
+# when 'S' is moved to 'M', then 'S' is a floating container on the same
+# workspaces as 'M'.
+###############################################################################
+
+$source_ws = fresh_workspace;
+$S = open_floating_window;
+$target_ws = fresh_workspace;
+$M = open_window;
+cmd 'mark target';
+
+cmd '[id="' . $S->{id} . '"] move container to mark target';
+sync_with_i3;
+
+is(@{get_ws($target_ws)->{floating_nodes}}, 1, 'target workspace has the container now');
+
+###############################################################################
+# Given 'S' and 'M' where 'M' is floating and on a different workspace,
+# when 'S' is moved to 'M', then 'S' ends up as a tiling container on the
+# same workspace as 'M'.
+###############################################################################
+
+$source_ws = fresh_workspace;
+$S = open_window;
+$target_ws = fresh_workspace;
+$M = open_floating_window;
+cmd 'mark target';
+
+cmd '[id="' . $S->{id} . '"] move container to mark target';
+sync_with_i3;
+
+($nodes, $focus) = get_ws_content($target_ws);
+is(@{$nodes}, 1, 'tiling container moved to the target workspace');
+
+###############################################################################
+
+done_testing;