1 files changed, 106 insertions, 0 deletions
diff --git a/libdimension/tests/png.c b/libdimension/tests/png.c
new file mode 100644
index 0000000..328ee36
--- /dev/null
+++ b/libdimension/tests/png.c
@@ -0,0 +1,106 @@
+/*************************************************************************
+ * Copyright (C) 2009-2011 Tavian Barnes <tavianator@tavianator.com>     *
+ *                                                                       *
+ * This file is part of The Dimension Test Suite.                        *
+ *                                                                       *
+ * The Dimension Test Suite 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.                       *
+ *                                                                       *
+ * The Dimension Test Suite 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 this program.  If not, see <http://www.gnu.org/licenses/>. *
+ *************************************************************************/
+
+#include "tests.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main(void)
+{
+  /* Treat warnings as errors for tests */
+  dmnsn_die_on_warnings(true);
+
+  /* Allocate our canvas */
+  dmnsn_canvas *canvas = dmnsn_new_canvas(768, 480);
+
+  /* Optimize the canvas for PNG export */
+  if (dmnsn_png_optimize_canvas(canvas) != 0) {
+    dmnsn_delete_canvas(canvas);
+    fprintf(stderr, "--- Couldn't optimize canvas for PNG! ---\n");
+    return EXIT_FAILURE;
+  }
+
+  /* Paint the canvas blue */
+  dmnsn_clear_canvas(canvas, dmnsn_blue);
+
+  /* Write the image to PNG */
+
+  printf("Writing scene to PNG\n");
+  FILE *ofile = fopen("png1.png", "wb");
+  if (!ofile) {
+    dmnsn_delete_canvas(canvas);
+    fprintf(stderr, "--- Couldn't open 'png1.png' for writing! ---\n");
+    return EXIT_FAILURE;
+  }
+
+  if (dmnsn_png_write_canvas(canvas, ofile) != 0) {
+    fclose(ofile);
+    dmnsn_delete_canvas(canvas);
+    fprintf(stderr, "--- Writing canvas to PNG failed! ---\n");
+    return EXIT_FAILURE;
+  }
+
+  fclose(ofile);
+  dmnsn_delete_canvas(canvas);
+
+  /*
+   * Now test PNG import/export
+   */
+
+  /* Read the image back from PNG */
+
+  printf("Reading scene from PNG\n");
+  FILE *ifile = fopen("png1.png", "rb");
+  if (!ifile) {
+    fprintf(stderr, "--- Couldn't open 'png1.png' for reading! ---\n");
+    return EXIT_FAILURE;
+  }
+
+  canvas = dmnsn_png_read_canvas(ifile);
+  if (!canvas) {
+    fclose(ifile);
+    fprintf(stderr, "--- Reading canvas from PNG failed! ---\n");
+    return EXIT_FAILURE;
+  }
+
+  fclose(ifile);
+
+  /* And write it back */
+
+  printf("Writing scene to PNG\n");
+  ofile = fopen("png2.png", "wb");
+  if (!ofile) {
+    fprintf(stderr, "--- Couldn't open 'png2.png' for writing! ---\n");
+    dmnsn_delete_canvas(canvas);
+    return EXIT_FAILURE;
+  }
+
+  if (dmnsn_png_write_canvas(canvas, ofile) != 0) {
+    fclose(ofile);
+    dmnsn_delete_canvas(canvas);
+    fprintf(stderr, "--- Writing canvas to PNG failed! ---\n");
+    return EXIT_FAILURE;
+  }
+
+  fclose(ofile);
+  dmnsn_delete_canvas(canvas);
+
+  return EXIT_SUCCESS;
+}