i3 - improved tiling WM

Add testcase for EWMH desktop viewport

Patch status: merged

Patch by Tony Crisci

Long description:

Test that the EWMH specified property _NET_DESKTOP_VIEWPORT is updated
properly on the root window. We interpret this as a list of x/y
coordinate pairs for the upper left corner of the respective outputs of
the workspaces.

This test is for this commit:

feature: implement ewmh desktop viewport property

4205973135f28a0ab0e25a63dbc8c6fff0d3539e

To apply this patch, use:
curl http://cr.i3wm.org/patch/622/raw.patch | git am

b/testcases/t/521-ewmh-desktop-viewport.t

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@@ -0,0 +1,92 @@
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+#!perl
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+# vim:ts=4:sw=4:expandtab
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+#
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+# Please read the following documents before working on tests:
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+# • http://build.i3wm.org/docs/testsuite.html
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+#   (or docs/testsuite)
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+#
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+# • http://build.i3wm.org/docs/lib-i3test.html
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+#   (alternatively: perldoc ./testcases/lib/i3test.pm)
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+#
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+# • http://build.i3wm.org/docs/ipc.html
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+#   (or docs/ipc)
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+#
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+# • http://onyxneon.com/books/modern_perl/modern_perl_a4.pdf
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+#   (unless you are already familiar with Perl)
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+#
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+# Test that the EWMH specified property _NET_DESKTOP_VIEWPORT is updated
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+# properly on the root window. We interpret this as a list of x/y coordinate
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+# pairs for the upper left corner of the respective outputs of the workspaces
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+# Ticket: #1241
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+use i3test i3_autostart => 0;
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+
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+my $config = <<EOT;
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+# i3 config file (v4)
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+font -misc-fixed-medium-r-normal--13-120-75-75-C-70-iso10646-1
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+
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+workspace 0 output fake-0
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+workspace 1 output fake-1
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+
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+fake-outputs 1024x768+0+0,1024x768+1024+0
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+EOT
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+
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+my $pid = launch_with_config($config);
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+
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+sub get_desktop_viewport {
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+    my $cookie = $x->get_property(
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+        0,
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+        $x->get_root_window(),
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+        $x->atom(name => '_NET_DESKTOP_VIEWPORT')->id,
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+        $x->atom(name => 'CARDINAL')->id,
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+        0,
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+        4096
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+    );
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+
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+    my $reply = $x->get_property_reply($cookie->{sequence});
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+
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+    return 0 if $reply->{value_len} == 0;
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+
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+    my $len = $reply->{length};
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+
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+    return unpack ("L$len", $reply->{value});
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+}
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+
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+# initialize the workspaces
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+cmd 'workspace 1';
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+cmd 'workspace 0';
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+
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+my @expected_viewport = (0, 0, 1024, 0);
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+my @desktop_viewport = get_desktop_viewport;
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+
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+is_deeply(\@desktop_viewport, \@expected_viewport,
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+    '_NET_DESKTOP_VIEWPORT should be an array of x/y coordinate pairs for the upper left corner of the respective outputs of the workspaces');
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+
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+cmd 'workspace 0';
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+open_window;
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+cmd 'workspace 3';
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+
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+@expected_viewport = (0, 0, 0, 0, 1024, 0);
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+@desktop_viewport = get_desktop_viewport;
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+
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+is_deeply(\@desktop_viewport, \@expected_viewport,
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+    'it should be updated when a new workspace appears');
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+
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+cmd 'rename workspace 3 to 2';
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+
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+@expected_viewport = (0, 0, 0, 0, 1024, 0);
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+@desktop_viewport = get_desktop_viewport;
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+
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+is_deeply(\@desktop_viewport, \@expected_viewport,
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+    'it should stay up to date when a workspace is renamed');
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+
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+cmd 'workspace 0';
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+
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+@expected_viewport = (0, 0, 1024, 0);
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+@desktop_viewport = get_desktop_viewport;
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+
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+is_deeply(\@desktop_viewport, \@expected_viewport,
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+    'it should be updated when a workspace is emptied');
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+
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+exit_gracefully($pid);
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+
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+done_testing;