1 files changed, 71 insertions, 0 deletions
diff --git a/share/extensions/tests/test_inkex_units.py b/share/extensions/tests/test_inkex_units.py
new file mode 100644
index 0000000..7cabf5d
--- /dev/null
+++ b/share/extensions/tests/test_inkex_units.py
@@ -0,0 +1,71 @@
+# coding=utf-8
+"""Test units inkex module functionality"""
+from inkex.units import (
+    are_near_relative,
+    convert_unit,
+    discover_unit,
+    parse_unit,
+    render_unit,
+)
+from inkex.tester import TestCase
+
+
+class UnitsTest(TestCase):
+    """Tests for Inkscape Units handling"""
+
+    def test_parse_unit(self):
+        """Test parsing a unit in a document"""
+        self.assertEqual(parse_unit("50px"), (50.0, "px"))
+        self.assertEqual(parse_unit("50"), (50.0, "px"))
+        self.assertEqual(parse_unit("50quaks"), None)
+        self.assertEqual(parse_unit("50quaks", default_value=10), (10.0, "px"))
+        self.assertEqual(parse_unit("50%"), (50.0, "%"))
+
+    def test_near(self):
+        """Test the closeness of numbers"""
+        self.assertFalse(are_near_relative(10.0, 5.0))
+        self.assertTrue(are_near_relative(10.0, 9.99))
+
+    def test_discover_unit(self):
+        """Based on the size of a document and it's viewBox"""
+        self.assertEqual(discover_unit("50px", 50), "px")
+        self.assertEqual(discover_unit("100mm", 3.94), "in")
+        self.assertEqual(discover_unit("3779", 1.0), "m")
+        self.assertEqual(discover_unit("50quaks", 150), "px")
+
+    def test_convert_unit(self):
+        """Convert units from one to another"""
+        self.assertEqual(convert_unit("10mm", "px"), 37.79527559055118)
+        self.assertEqual(convert_unit("1in", "cm"), 2.54)
+        self.assertEqual(convert_unit("37.79527559055118px", "mm"), 10.0)
+        self.assertEqual(convert_unit("1in", ""), 96.0)
+        self.assertEqual(convert_unit("96", "in"), 1.0)
+        self.assertEqual(convert_unit("10%", "mm"), 0.0)
+        self.assertEqual(convert_unit("1in", "grad"), 0.0)
+        self.assertEqual(convert_unit("10quaks", "mm"), 0.0)
+        self.assertEqual(convert_unit("10mm", "quaks"), 0.0)
+
+    def test_render_unit(self):
+        """Convert unit and value pair into rendered unit string"""
+        self.assertEqual(render_unit(10.0, "mm"), "10mm")
+        self.assertEqual(render_unit(10.01, "mm"), "10.01mm")
+        self.assertEqual(render_unit(10.000001, "mm"), "10mm")
+        self.assertEqual(render_unit("10cm", "mm"), "10cm")
+
+    def test_number_parsing(self):
+        """Width number parsing test"""
+        for value in (
+            "100mm",
+            "100  mm",
+            "   100mm",
+            "100mm    ",
+            "+100mm",
+            "100.0mm",
+            "100.0e0mm",
+            "10.0e1mm",
+            "10.0e+1mm",
+            "1000.0e-1mm",
+            ".1e+3mm",
+            "+.1e+3mm",
+        ):
+            self.assertEqual(parse_unit(value), (100, "mm"))