[test] Generalise pnm_ok() to pixbuf_ok()

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/tests/pixbuf_test.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program 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 2 of the
+ * License, or any later version.
+ *
+ * This program 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * Pixel buffer self-tests
+ *
+ */
+
+/* Forcibly enable assertions */
+#undef NDEBUG
+
+#include <assert.h>
+#include <ipxe/image.h>
+#include <ipxe/pixbuf.h>
+#include <ipxe/test.h>
+#include "pixbuf_test.h"
+
+/**
+ * Report pixel buffer test result
+ *
+ * @v test		Pixel buffer test
+ * @v file		Test code file
+ * @v line		Test code line
+ */
+void pixbuf_okx ( struct pixel_buffer_test *test, const char *file,
+		  unsigned int line ) {
+	struct pixel_buffer *pixbuf;
+	int rc;
+
+	/* Sanity check */
+	assert ( ( test->width * test->height * sizeof ( test->data[0] ) )
+		 == test->len );
+
+	/* Correct image data pointer */
+	test->image->data = virt_to_user ( ( void * ) test->image->data );
+
+	/* Check that image is detected as PNM */
+	okx ( image_probe ( test->image ) == 0, file, line );
+	okx ( test->image->type == test->type, file, line );
+
+	/* Check that a pixel buffer can be created from the image */
+	okx ( ( rc = image_pixbuf ( test->image, &pixbuf ) ) == 0, file, line );
+	if ( rc == 0 ) {
+
+		/* Check pixel buffer dimensions */
+		okx ( pixbuf->width == test->width, file, line );
+		okx ( pixbuf->height == test->height, file, line );
+
+		/* Check pixel buffer data */
+		okx ( pixbuf->len == test->len, file, line );
+		okx ( memcmp_user ( pixbuf->data, 0,
+				    virt_to_user ( test->data ), 0,
+				    test->len ) == 0, file, line );
+
+		pixbuf_put ( pixbuf );
+	}
+}