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+/*
+ * Copyright © 2005 Bertram Felgenhauer
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * the author not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. The author makes no representations about the
+ * suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE AUTHOR. BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Bertram Felgenhauer <int-e@gmx.de>
+ */
+
+#include "cairo-test.h"
+
+/* Test case for:
+ *
+ * https://bugs.freedesktop.org/show_bug.cgi?id=4137
+ */
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_paint (cr);
+
+ cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
+ cairo_set_source_rgb (cr, 0, 0, 0);
+
+ cairo_translate(cr, -300, -300);
+ cairo_scale(cr, 677.0/26, 677.0/26);
+ cairo_translate(cr, 1, 1);
+
+ /* this should draw a seamless 2x2 rectangle */
+ cairo_rectangle(cr, 11, 11, 1, 1);
+ cairo_rectangle(cr, 11, 12, 1, 1);
+ cairo_rectangle(cr, 12, 11, 1, 1);
+ cairo_rectangle(cr, 12, 12, 1, 1);
+
+ cairo_set_source_rgb(cr, 0, 0, 0);
+ cairo_fill(cr);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (rectangle_rounding_error,
+ "This demonstrates (or not) a rounding error that causes a gap between "
+ "two neighbouring rectangles.",
+ "trap", /* keywords */
+ "target=raster", /* requirements */
+ 76, 76,
+ NULL, draw)