Test

src/context.rs

@@ -105,6 +105,7 @@ impl CGContext {
                                                bytes_per_row,
                                                space.as_concrete_TypeRef(),
                                                bitmap_info);
+            assert!(!result.is_null());
             TCFType::wrap_under_create_rule(result)
         }
     }
@@ -223,6 +224,30 @@ impl CGContext {
     }
 }
 
+#[test]
+fn create_bitmap_context_test() {
+    use geometry::*;
+
+    let cs = CGColorSpace::create_device_rgb();
+    let ctx = CGContext::create_bitmap_context(None,
+                                16, 8,
+                                8, 0,
+                                &cs,
+                                ::base::kCGImageAlphaPremultipliedLast);
+    ctx.set_rgb_fill_color(1.,0.,1.,1.);
+    ctx.fill_rect(CGRect::new(&CGPoint::new(0.,0.), &CGSize::new(8.,8.)));
+    let img = ctx.create_image().unwrap();
+    assert_eq!(16, img.width());
+    assert_eq!(8, img.height());
+    assert_eq!(8, img.bits_per_component());
+    assert_eq!(32, img.bits_per_pixel());
+    let data = img.data();
+    assert_eq!(255, data.bytes()[0]);
+    assert_eq!(0, data.bytes()[1]);
+    assert_eq!(255, data.bytes()[2]);
+    assert_eq!(255, data.bytes()[3]);
+}
+
 #[link(name = "ApplicationServices", kind = "framework")]
 extern {
     fn CGBitmapContextCreate(data: *mut c_void,