tests: Initial wlr_surface unit test

A small unit test of wlr_surface, currently testing surface and buffer
damage with scaling, transform and viewport, including interaction with
surface state locking.

test/meson.build

@@ -1,8 +1,21 @@
+wayland_client = dependency('wayland-client', kwargs: wayland_kwargs)
+
 test(
 	'box',
 	executable('test-box', 'test_box.c', dependencies: wlroots),
 )
 
+test(
+	'surface',
+	executable('test-surface',
+		[
+			'test_surface.c',
+			'../util/shm.c',
+			protocols_code['viewporter'],
+		],
+		dependencies: [wlroots, wayland_client]),
+)
+
 benchmark(
 	'scene',
 	executable('bench-scene', 'bench_scene.c', dependencies: wlroots),