From b750a926472b96564cc72bdcc711a36a250d169b Mon Sep 17 00:00:00 2001
From: David Capello <david@igarastudio.com>
Date: Fri, 29 Mar 2019 15:55:45 -0300
Subject: [PATCH] Test Image:isEmpty() and Image:isPlain()

---
 scripts/image.lua | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scripts/image.lua b/scripts/image.lua
index ccf7ed68f..7f3d21dbc 100644
--- a/scripts/image.lua
+++ b/scripts/image.lua
@@ -9,6 +9,9 @@ local a = Image(32, 64)
 assert(a.width == 32)
 assert(a.height == 64)
 assert(a.colorMode == ColorMode.RGB) -- RGB by default
+assert(a:isEmpty())
+assert(a:isPlain(pc.rgba(0, 0, 0, 0)))
+assert(a:isPlain(0))
 
 do
    local b = Image(32, 64, ColorMode.INDEXED)
@@ -24,6 +27,7 @@ do
          a:putPixel(x, y, pc.rgba(x, y, x+y, x-y))
       end
    end
+   assert(not a:isEmpty())
 end
 
 -- Clone