tests: rename files (00x-*.t is basic stuff, >=100-*.t are tests using IPC)

testcases/t/104-focus-stack.t

@@ -0,0 +1,30 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+# Checks if the focus is correctly restored, when creating a floating client
+# over an unfocused tiling client and destroying the floating one again.
+
+use i3test;
+
+my $x = X11::XCB::Connection->new;
+
+fresh_workspace;
+
+cmd 'split h';
+my $tiled_left = open_window($x);
+my $tiled_right = open_window($x);
+
+# Get input focus before creating the floating window
+my $focus = $x->input_focus;
+
+# Create a floating window which is smaller than the minimum enforced size of i3
+my $window = open_floating_window($x);
+
+is($x->input_focus, $window->id, 'floating window focused');
+
+$window->unmap;
+
+wait_for_unmap($x);
+
+is($x->input_focus, $focus, 'Focus correctly restored');
+
+done_testing;