1 files changed, 55 insertions, 0 deletions
diff --git a/share/extensions/inkex/tester/svg.py b/share/extensions/inkex/tester/svg.py
new file mode 100644
index 0000000..c601c81
--- /dev/null
+++ b/share/extensions/inkex/tester/svg.py
@@ -0,0 +1,55 @@
+# coding=utf-8
+#
+# Copyright (C) 2018 Martin Owens
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA.
+#
+"""
+SVG specific utilities for tests.
+"""
+
+from lxml import etree
+
+from inkex import SVG_PARSER
+
+
+def svg(svg_attrs=""):
+    """Returns xml etree based on a simple SVG element.
+
+    svg_attrs: A string containing attributes to add to the
+        root <svg> element of a minimal SVG document.
+    """
+    return etree.fromstring(
+        str.encode(
+            '<?xml version="1.0" encoding="UTF-8" standalone="no"?>'
+            f"<svg {svg_attrs}></svg>"
+        ),
+        parser=SVG_PARSER,
+    )
+
+
+def svg_unit_scaled(width_unit):
+    """Same as svg, but takes a width unit (top-level transform) for the new document.
+
+    The transform is the ratio between the SVG width and the viewBox width.
+    """
+    return svg(f'width="1{width_unit}" viewBox="0 0 1 1"')
+
+
+def svg_file(filename):
+    """Parse an svg file and return it's document root"""
+    with open(filename, "r", encoding="utf-8") as fhl:
+        doc = etree.parse(fhl, parser=SVG_PARSER)
+        return doc.getroot()