Add unit tests for reading from different sources in svg2paths

test/test_svg2paths.py

@@ -1,6 +1,7 @@
 from __future__ import division, absolute_import, print_function
 import unittest
 from svgpathtools import *
+from io import StringIO
 from os.path import join, dirname
 
 from svgpathtools.svg_to_paths import rect2pathd
@@ -58,3 +59,32 @@ class TestSVG2Paths(unittest.TestCase):
         self.assertEqual(rect2pathd(non_rounded), 'M10.0 10.0 L 110.0 10.0 L 110.0 110.0 L 10.0 110.0 z')
         rounded = {"x":"10", "y":"10", "width":"100","height":"100", "rx":"15", "ry": "12"}
         self.assertEqual(rect2pathd(rounded), "M 25.0 10.0 L 95.0 10.0 A 15.0 12.0 0 0 1 110.0 22.0 L 110.0 98.0 A 15.0 12.0 0 0 1 95.0 110.0 L 25.0 110.0 A 15.0 12.0 0 0 1 10.0 98.0 L 10.0 22.0 A 15.0 12.0 0 0 1 25.0 10.0 z")
+
+    def test_from_file_path(self):
+        """ Test reading svg from file provided as path """
+        paths, _ = svg2paths(join(dirname(__file__), 'polygons.svg'))
+
+        self.assertEqual(len(paths), 2)
+
+    def test_from_file_object(self):
+        """ Test reading svg from file object that has already been opened """
+        with open(join(dirname(__file__), 'polygons.svg'), 'r') as file:
+            paths, _ = svg2paths(file)
+
+            self.assertEqual(len(paths), 2)
+
+    def test_from_stringio(self):
+        """ Test reading svg object contained in an StringIO object """
+        with open(join(dirname(__file__), 'polygons.svg'), 'r') as file:
+            # read entire file into string
+            file_content: str = file.read()
+            # prepare stringio object
+            file_as_stringio = StringIO()
+            # paste file content into it
+            file_as_stringio.write(file_content)
+            # reset curser to its beginning
+            file_as_stringio.seek(0)
+
+            paths, _ = svg2paths(file_as_stringio)
+
+            self.assertEqual(len(paths), 2)