1 files changed, 67 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/clip-stroke-no-op.c b/libs/cairo-1.16.0/test/clip-stroke-no-op.c
new file mode 100644
index 0000000..8eb9171
--- /dev/null
+++ b/libs/cairo-1.16.0/test/clip-stroke-no-op.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2009 Benjamin Otte
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Author: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "cairo-test.h"
+
+#define WIDTH 50
+#define HEIGHT 50
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    /* Neutral gray background */
+    cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
+    cairo_paint (cr);
+
+    /* remove this clip operation and everything works */
+    cairo_rectangle (cr, 10, 10, 30, 30);
+    cairo_clip (cr);
+
+    /* remove this no-op and everything works */
+    cairo_stroke (cr);
+
+    /* make the y coordinates integers and everything works */
+    cairo_move_to (cr, 20, 20.101562);
+    cairo_line_to (cr, 30, 20.101562);
+
+    /* This clip operation should fail to work. But with cairo 1.9, if all the 
+     * 3 cases above happen, the clip will not work and the paint will happen.
+     */
+    cairo_save (cr); {
+	cairo_set_source_rgba (cr, 1, 0.5, 0.5, 1);
+	cairo_clip_preserve (cr);
+	cairo_paint (cr);
+    } cairo_restore (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (clip_stroke_no_op,
+	    "Exercises a bug found by Benjamin Otte whereby a no-op clip is nullified by a stroke",
+	    "clip, stroke", /* keywords */
+	    NULL, /* requirements */
+	    WIDTH, HEIGHT,
+	    NULL, draw)