From e22c02dbaeda6941083fc89b517508dc0c4386a0 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 15 Jan 2010 12:02:58 +0000
Subject: [PATCH] test: Add degenerate-arcs

A simple test to ensure that using degenerate-arcs such as when drawing
a rounded rectangle with radii=0 construct a proper path.
---
 test/Makefile.am             |   1 +
 test/Makefile.sources        |   1 +
 test/degenerate-arcs.c       |  57 +++++++++++++++++++++++++++++++++++
 test/degenerate-arcs.ref.png | Bin 0 -> 120 bytes
 4 files changed, 59 insertions(+)
 create mode 100644 test/degenerate-arcs.c
 create mode 100644 test/degenerate-arcs.ref.png

diff --git a/test/Makefile.am b/test/Makefile.am
index 4e5b2737c..ff81eeee6 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -336,6 +336,7 @@ REFERENCE_IMAGES = \
 	degenerate-arc.ps3.ref.png \
 	degenerate-arc.ref.png \
 	degenerate-arc.xlib.ref.png \
+	degenerate-arcs.ref.png \
 	degenerate-curve-to.ref.png \
 	degenerate-curve-to.ps.xfail.png \
 	degenerate-dash.ps.xfail.png \
diff --git a/test/Makefile.sources b/test/Makefile.sources
index 0b4ba42ba..d123d3a17 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -56,6 +56,7 @@ test_sources = \
 	dash-state.c					\
 	dash-zero-length.c				\
 	degenerate-arc.c				\
+	degenerate-arcs.c				\
 	degenerate-curve-to.c				\
 	degenerate-dash.c				\
 	degenerate-path.c				\
diff --git a/test/degenerate-arcs.c b/test/degenerate-arcs.c
new file mode 100644
index 000000000..2470828bb
--- /dev/null
+++ b/test/degenerate-arcs.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2010 Intel Corporation
+ *
+ * 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
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Chris Wilson makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+#define WIDTH 20
+#define HEIGHT 20
+
+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_source_rgb (cr, 0.3, 0.4, 0.5);
+
+    /* This should be equivalent to a simple rectangle, such as may be
+     * constructed for a rounded-rectangle with corner radii of 0...
+     */
+    cairo_arc (cr, 5, 5, 0, M_PI, 3*M_PI/2);
+    cairo_arc (cr, 15, 5, 0, 3*M_PI/2, 2*M_PI);
+    cairo_arc (cr, 15, 15, 0, 0, M_PI/2);
+    cairo_arc (cr, 5, 15, 0, M_PI/2, M_PI);
+
+    cairo_fill (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (degenerate_arcs,
+	    "Tests path construction using a series of degenerate (radius=0) arcs",
+	    "arc, fill", /* keywords */
+	    NULL, /* requirements */
+	    WIDTH, HEIGHT,
+	    NULL, draw)
diff --git a/test/degenerate-arcs.ref.png b/test/degenerate-arcs.ref.png
new file mode 100644
index 0000000000000000000000000000000000000000..fc1869dc1594a5b4a4420c254536e821ecb9b67e
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