Beginning to write tests for groups

test/groups.svg

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+<?xml version="1.0" ?>
+<svg
+    baseProfile="full"
+    version="1.1"
+    viewBox="0 0 365 365"
+    height="100%"
+    width="100%"
+    xmlns="http://www.w3.org/2000/svg"
+    xmlns:ev="http://www.w3.org/2001/xml-events"
+    xmlns:xlink="http://www.w3.org/1999/xlink">
+  <defs/>
+  <g
+      id="matrix group"
+      transform="matrix(1.5 0 0 0.5 -40.0 20.0)">
+
+    <path
+        d="M 183,183 l 0,-50"
+        fill="black"
+        stroke="black"
+        stroke-width="3"/>
+
+    <g
+        id="scale group"
+        transform="scale(1.25)">
+
+      <path
+            d="M 122,320 l -50,0"
+            fill="black"
+            stroke="black"
+            stroke-width="3"/>
+
+      <g
+          id="nested group - empty transform"
+          transform="">
+
+        <path
+            d="M 150,200 l -50,25"
+            fill="black"
+            stroke="black"
+            stroke-width="3"/>
+
+      </g>
+
+      <g
+          id="nested group - no transform">
+
+        <path
+            d="M 150,200 l -50,25"
+            fill="black"
+            stroke="black"
+            stroke-width="3"/>
+
+      </g>
+
+      <g
+          id="nested group - translate"
+          transform="translate(20)">
+
+        <path
+            d="M 150,200 l -50,25"
+            fill="black"
+            stroke="black"
+            stroke-width="3"/>
+
+      </g>
+
+      <g
+          id="nested group - translate xy"
+          transform="translate(20, 30)">
+
+        <path
+            d="M 150,200 l -50,25"
+            fill="black"
+            stroke="black"
+            stroke-width="3"/>
+
+      </g>
+
+    </g>
+
+    <g
+        id="scale xy group"
+        transform="scale(0.5 1.5)">
+
+      <path
+          d="M 122,320 l -50,0"
+          fill="black"
+          stroke="black"
+          stroke-width="3"/>
+
+    </g>
+
+    <g
+        id="rotate group"
+        transform="rotate(20)">
+
+      <path
+          d="M 183,183 l 0,30"
+          fill="black"
+          stroke="black"
+          stroke-width="3"/>
+
+    </g>
+
+    <g
+        id="rotate xy group"
+        transform="rotate(45 183 183)">
+
+      <path
+          d="M 183,183 l 0,30"
+          fill="black"
+          stroke="black"
+          stroke-width="3"/>
+
+    </g>
+
+    <g
+        id="skew x group"
+        transform="skewX(5)">
+
+      <path
+          d="M 183,183 l 40,40"
+          fill="black"
+          stroke="black"
+          stroke-width="3"/>
+
+    </g>
+
+    <g
+        id="skew y group"
+        transform="skewY(5)">
+
+      <path
+          d="M 183,183 l 40,40"
+          fill="black"
+          stroke="black"
+          stroke-width="3"/>
+
+    </g>
+
+  </g>
+
+</svg>

test/test_groups.py

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+from __future__ import division, absolute_import, print_function
+import unittest
+from svgpathtools import *
+
+class TestGroups(unittest.TestCase):
+
+    def test_group_transform(self):
+        pass