Modified scour and added first unit test

scour.py

@@ -550,7 +550,7 @@ def properlySizeDoc(docElement):
 # this is the main method
 # input is a string representation of the input XML
 # returns a string representation of the output XML
-def scour(in_string):
+def scourString(in_string):
 	global numAttrsRemoved
 	global numStylePropsFixed
 	global numElemsRemoved
@@ -615,6 +615,14 @@ def scour(in_string):
 	out_string = doc.documentElement.toxml()
 	return out_string
 
+# used mostly by unit tests
+# input is a filename
+# returns the minidom doc representation of the SVG
+def scourXmlFile(filename):
+	in_string = open(filename).read()
+	out_string = scourString(in_string)
+	return xml.dom.minidom.parseString(out_string)
+
 if __name__ == '__main__':
 
 	# parse command-line arguments
@@ -656,7 +664,7 @@ if __name__ == '__main__':
 
 	# do the work
 	in_string = input.read()
-	out_string = scour(in_string)
+	out_string = scourString(in_string)
 	output.write(out_string)
 
 	# Close input and output files

testscour.py

@@ -19,5 +19,24 @@
 
 import unittest
 import scour
+import xml.dom.minidom
+
+# performs a test on a given node
+# func must return either True or False
+def walkTree(elem, func):
+	if func(elem) == False:  return False
+	for child in elem.childNodes:
+		if walkTree(child, func) == False: return False
+	return True
+
+class NoInkscapeElements(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/inkscape.svg')
+		self.assertNotEquals( walkTree( doc.documentElement, 
+			lambda e: e.namespaceURI != "http://www.inkscape.org/namespaces/inkscape" ), False,
+			'Found Inkscape elements' )
+
+if __name__ == '__main__':
+    unittest.main()
 
 print "done"

unittests/inkscape.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+	inkscape:version="0.46" version="1.0">
+<inkscape:perspective inkscape:vp_x="0 : 526.18109 : 1" inkscape:vp_y="0 : 1000 : 0" inkscape:vp_z="744.09448 : 526.18109 : 1" inkscape:persp3d-origin="372.04724 : 350.78739 : 1" id="perspective3104"/>
+<rect width="300" height="200" fill="green" />
+</svg>