michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/
michael@0:  */
michael@0: 
michael@0: #include "cairo.h"
michael@0: 
michael@0: #include "gtest/gtest.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: void TryCircle(double centerX, double centerY, double radius) {
michael@0:   printf("TestCairo:TryArcs centerY %f, radius %f\n",centerY,radius);
michael@0: 
michael@0:   cairo_surface_t *surf = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,8,21);
michael@0:   ASSERT_TRUE(surf != nullptr);
michael@0: 
michael@0:   cairo_t *cairo = cairo_create(surf);
michael@0:   ASSERT_TRUE(cairo != nullptr);
michael@0: 
michael@0:   cairo_set_antialias(cairo, CAIRO_ANTIALIAS_NONE);
michael@0:   cairo_arc(cairo, 0.0, centerY, radius, 0.0, 6.2831853071795862);
michael@0:   cairo_fill_preserve(cairo);
michael@0: 
michael@0:   cairo_surface_destroy(surf);
michael@0:   cairo_destroy(cairo);
michael@0: }
michael@0: 
michael@0: TEST(Cairo, Simple) {
michael@0:   TryCircle(0.0, 0.0, 14.0);
michael@0:   TryCircle(0.0, 1.0, 22.4);
michael@0:   TryCircle(1.0, 0.0, 1422.4);
michael@0:   TryCircle(1.0, 1.0, 3422.4);
michael@0:   TryCircle(-10.0, 1.0, -2);
michael@0: }
michael@0: 
michael@0: TEST(Cairo, Bug825721) {
michael@0:   // OK:
michael@0:   TryCircle(0.0, 0.0, 8761126469220696064.0);
michael@0:   TryCircle(0.0, 1.0, 8761126469220696064.0);
michael@0: 
michael@0:   // OK:
michael@0:   TryCircle(1.0, 0.0, 5761126469220696064.0);
michael@0: 
michael@0:   // This was the crash in 825721.  Note that centerY has to be non-zero,
michael@0:   // and radius has to be not only large, but in particular range.
michael@0:   // 825721 has a band-aid fix, where the crash is inevitable, but does
michael@0:   // not fix the cause.  The same code crashes in cairo standalone.
michael@0:   TryCircle(0.0, 1.0, 5761126469220696064.0);
michael@0: }
michael@0: 
michael@0: }
michael@0: }