test: affine-test updated to stress 90/180/270 degrees rotation more

diff --git a/test/affine-test.c b/test/affine-test.c
index f7f058a..b7a1fa6 100644 (file)
--- a/test/affine-test.c
+++ b/test/affine-test.c
@@ -112,10 +112,36 @@ test_composite (int      testnum,
 
     if (lcg_rand_n (4) > 0)
     {
-       int c = lcg_rand_N (2 * 65536) - 65536;
-       int s = lcg_rand_N (2 * 65536) - 65536;
-       
+       int c, s, tx = 0, ty = 0;
+       switch (lcg_rand_n (4))
+       {
+       case 0:
+           /* 90 degrees */
+           c = 0;
+           s = pixman_fixed_1;
+           tx = pixman_int_to_fixed (MAX_SRC_HEIGHT);
+           break;
+       case 1:
+           /* 180 degrees */
+           c = -pixman_fixed_1;
+           s = 0;
+           tx = pixman_int_to_fixed (MAX_SRC_WIDTH);
+           ty = pixman_int_to_fixed (MAX_SRC_HEIGHT);
+           break;
+       case 2:
+           /* 270 degrees */
+           c = 0;
+           s = -pixman_fixed_1;
+           ty = pixman_int_to_fixed (MAX_SRC_WIDTH);
+           break;
+       default:
+           /* arbitrary rotation */
+           c = lcg_rand_N (2 * 65536) - 65536;
+           s = lcg_rand_N (2 * 65536) - 65536;
+           break;
+       }
        pixman_transform_rotate (&transform, NULL, c, s);
+       pixman_transform_translate (&transform, NULL, tx, ty);
     }
 
     pixman_image_set_transform (src_img, &transform);
@@ -256,6 +282,6 @@ main (int argc, const char *argv[])
 {
     pixman_disable_out_of_bounds_workaround ();
 
-    return fuzzer_test_main ("affine", 8000000, 0x46EC3C6A,
+    return fuzzer_test_main ("affine", 8000000, 0x4B5D1852,
                             test_composite, argc, argv);
 }