Check in new files for single pixel buffer tests

* tests/single_pixel_buffer.dump:
* tests/single_pixel_buffer_test.c:
* tests/single_pixel_buffer_viewport.dump: New files.

tests/single_pixel_buffer_test.c

@@ -0,0 +1,230 @@
+/* Tests for the Wayland compositor running on the X server.
+
+Copyright (C) 2022 to various contributors.
+
+This file is part of 12to11.
+
+12to11 is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation, either version 3 of the License, or (at your
+option) any later version.
+
+12to11 is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with 12to11.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "test_harness.h"
+#include "single-pixel-buffer-v1.h"
+#include "viewporter.h"
+
+/* Tests for single pixel buffers.  */
+
+enum test_kind
+  {
+    MAP_WINDOW_KIND,
+    SINGLE_PIXEL_BUFFER_KIND,
+    SINGLE_PIXEL_BUFFER_VIEWPORT_KIND,
+  };
+
+static const char *test_names[] =
+  {
+    "map_window",
+    "single_pixel_buffer",
+    "single_pixel_buffer_viewport",
+  };
+
+#define LAST_TEST       SINGLE_PIXEL_BUFFER_VIEWPORT_KIND
+
+/* The display.  */
+static struct test_display *display;
+
+/* The buffer manager.  */
+static struct wp_single_pixel_buffer_manager_v1 *manager;
+
+/* The viewporter.  */
+static struct wp_viewporter *viewporter;
+
+/* Test interfaces.  */
+static struct test_interface test_interfaces[] =
+  {
+    { "wp_single_pixel_buffer_manager_v1", &manager,
+      &wp_single_pixel_buffer_manager_v1_interface, 1, },
+    { "wp_viewporter", &viewporter, &wp_viewporter_interface,
+      1, },
+  };
+
+/* The test surface window.  */
+static Window test_surface_window;
+
+/* The test surface and Wayland surface.  */
+static struct test_surface *test_surface;
+static struct wl_surface *wayland_surface;
+
+/* The single pixel buffer.  */
+static struct wl_buffer *single_pixel_buffer;
+
+/* The viewport.  */
+static struct wp_viewport *viewport;
+
+
+
+/* Forward declarations.  */
+static void wait_frame_callback (struct wl_surface *);
+
+
+
+static void
+test_single_step (enum test_kind kind)
+{
+  test_log ("running test step: %s", test_names[kind]);
+
+  switch (kind)
+    {
+    case MAP_WINDOW_KIND:
+      wl_surface_attach (wayland_surface, single_pixel_buffer, 0, 0);
+      wl_surface_damage (wayland_surface, 0, 0, 1, 1);
+      wl_surface_commit (wayland_surface);
+      break;
+
+    case SINGLE_PIXEL_BUFFER_KIND:
+      wait_frame_callback (wayland_surface);
+      verify_image_data (display, test_surface_window,
+			 "single_pixel_buffer.dump");
+      test_single_step (SINGLE_PIXEL_BUFFER_VIEWPORT_KIND);
+      break;
+
+    case SINGLE_PIXEL_BUFFER_VIEWPORT_KIND:
+      wp_viewport_set_source (viewport,
+			      wl_fixed_from_double (0.0),
+			      wl_fixed_from_double (0.0),
+			      wl_fixed_from_double (1.0),
+			      wl_fixed_from_double (1.0));
+      wp_viewport_set_destination (viewport, 275, 275);
+      wait_frame_callback (wayland_surface);
+
+      verify_image_data (display, test_surface_window,
+			 "single_pixel_buffer_viewport.dump");
+      break;
+    }
+
+  if (kind == LAST_TEST)
+    test_complete ();
+}
+
+
+
+static void
+handle_test_surface_mapped (void *data, struct test_surface *surface,
+			    uint32_t xid, const char *display_string)
+{
+  /* Sleep for 1 second to ensure that the window is exposed and
+     redirected.  */
+  sleep (1);
+
+  /* Start the test.  */
+  test_surface_window = xid;
+
+  /* Run the test again.  */
+  test_single_step (SINGLE_PIXEL_BUFFER_KIND);
+}
+
+static const struct test_surface_listener test_surface_listener =
+  {
+    handle_test_surface_mapped,
+  };
+
+
+
+static void
+handle_wl_callback_done (void *data, struct wl_callback *callback,
+			   uint32_t callback_data)
+{
+  bool *flag;
+
+  wl_callback_destroy (callback);
+
+  /* Now tell wait_frame_callback to break out of the loop.  */
+  flag = data;
+  *flag = true;
+}
+
+static const struct wl_callback_listener wl_callback_listener =
+  {
+    handle_wl_callback_done,
+  };
+
+
+
+static void
+wait_frame_callback (struct wl_surface *surface)
+{
+  struct wl_callback *callback;
+  bool flag;
+
+  /* Commit surface and wait for a frame callback.  */
+
+  callback = wl_surface_frame (surface);
+  flag = false;
+
+  wl_callback_add_listener (callback, &wl_callback_listener,
+			    &flag);
+  wl_surface_commit (surface);
+
+  while (!flag)
+    {
+      if (wl_display_dispatch (display->display) == -1)
+        die ("wl_display_dispatch");
+    }
+}
+
+static void
+run_test (void)
+{
+  if (!make_test_surface (display, &wayland_surface,
+			  &test_surface))
+    report_test_failure ("failed to create test surface");
+
+  test_surface_add_listener (test_surface, &test_surface_listener,
+			     NULL);
+
+  /* Create the single pixel buffer.  */
+  single_pixel_buffer
+    = wp_single_pixel_buffer_manager_v1_create_u32_rgba_buffer (manager,
+								0xffffffff,
+								0xffffffff,
+								0x00000000,
+								0xffffffff);
+  if (!single_pixel_buffer)
+    report_test_failure ("failed to create single pixel buffer");
+
+  /* And the viewport.  */
+  viewport = wp_viewporter_get_viewport (viewporter, wayland_surface);
+
+  if (!viewport)
+    report_test_failure ("failed to get viewport");
+
+  test_single_step (MAP_WINDOW_KIND);
+
+  while (true)
+    {
+      if (wl_display_dispatch (display->display) == -1)
+        die ("wl_display_dispatch");
+    }
+}
+
+int
+main (void)
+{
+  test_init ();
+  display = open_test_display (test_interfaces,
+			       ARRAYELTS (test_interfaces));
+
+  if (!display)
+    report_test_failure ("failed to open display");
+
+  run_test ();
+}