[pypy-svn] r55050 - pypy/dist/pypy/rlib/rsdl/test

[karlb at codespeak.net]

Author: karlb
Date: Wed May 21 11:42:57 2008
New Revision: 55050

Added:
   pypy/dist/pypy/rlib/rsdl/test/test_surface.py
Log:
Added test for RSDL.SetAlpha


Added: pypy/dist/pypy/rlib/rsdl/test/test_surface.py
==============================================================================
--- (empty file)
+++ pypy/dist/pypy/rlib/rsdl/test/test_surface.py	Wed May 21 11:42:57 2008
@@ -0,0 +1,48 @@
+import py, sys
+from pypy.rlib.rsdl import RSDL, RSDL_helper
+from pypy.rlib.rarithmetic import r_uint
+from pypy.rpython.lltypesystem import lltype, rffi
+
+class TestSurface:
+
+    def setup_method(self, meth):
+        self.large_surface = RSDL.CreateRGBSurface(0, 300, 300, 32,
+                                        r_uint(0x000000FF),
+                                        r_uint(0x0000FF00),
+                                        r_uint(0x00FF0000),
+                                        r_uint(0x00000000))
+        self.small_surface = RSDL.CreateRGBSurface(0, 50, 50, 32,
+                                        r_uint(0x000000FF),
+                                        r_uint(0x0000FF00),
+                                        r_uint(0x00FF0000),
+                                        r_uint(0x00000000))
+        fmt = self.small_surface.c_format
+        color = RSDL.MapRGB(fmt, 255, 0, 0)
+        RSDL.FillRect(self.small_surface, lltype.nullptr(RSDL.Rect), color)
+
+    def test_simple(self):
+        pass   # only checks that creating the surfaces works
+
+    def test_set_alpha(self):
+        assert RSDL.SetAlpha(self.small_surface, RSDL.SRCALPHA, 128) == 0
+        RSDL_helper.blit_complete_surface(
+            self.small_surface,
+            self.large_surface,
+            10, 10)
+        RSDL_helper.blit_complete_surface(
+            self.small_surface,
+            self.large_surface,
+            20, 20)
+        for position, color in (
+                (( 0, 0), (  0,0,0)), # no rect
+                ((10,10), (127,0,0)), # one rect
+                ((20,20), (191,0,0))  # two overlapping rects
+            ):
+            fetched_color = RSDL_helper.get_pixel(self.large_surface, position[0], position[1])
+            assert RSDL_helper.get_rgb(fetched_color, self.large_surface.c_format) == color 
+
+    def teardown_method(self, meth):
+        RSDL.FreeSurface(self.small_surface)
+        RSDL.FreeSurface(self.large_surface)
+        RSDL.Quit()
+