tests for imageqt4/5

Tests/test_imageqt.py

@@ -1,9 +1,39 @@
 from tester import *
 
 from PIL import Image
-try:
-    from PIL import ImageQt
-except ImportError as v:
-    skip(v)
 
-success()
+try:
+    from PyQt5.QtGui import QImage, qRgb, qRgba
+except:
+    try:
+        from PyQt4.QtGui import QImage, qRgb, qRgba
+    except:
+        skip('PyQT4 or 5 not installed')
+
+from PIL import ImageQt
+
+def test_rgb():
+    # from https://qt-project.org/doc/qt-4.8/qcolor.html
+    # typedef QRgb
+    # An ARGB quadruplet on the format #AARRGGBB, equivalent to an unsigned int.
+
+    assert_equal(qRgb(0,0,0), qRgba(0,0,0,255))
+    
+    def checkrgb(r,g,b):
+        val = ImageQt.rgb(r,g,b)
+        print val
+        val = val % 2**24 # drop the alpha
+        assert_equal(val >> 16, r)
+        assert_equal(((val >> 8 ) % 2**8), g)
+        assert_equal(val % 2**8, b)
+        
+    checkrgb(0,0,0)
+    checkrgb(255,0,0)
+    checkrgb(0,255,0)
+    checkrgb(0,0,255)
+
+
+def test_image():
+    for mode in ('1', 'RGB', 'RGBA', 'L', 'P'):
+        print ( "Testing mode %s" % mode)
+        assert_no_exception(lambda: ImageQt.ImageQt(lena(mode)))