1 files changed, 229 insertions, 0 deletions
diff --git a/share/extensions/tests/test_inkex_styles.py b/share/extensions/tests/test_inkex_styles.py
new file mode 100644
index 0000000..224be2c
--- /dev/null
+++ b/share/extensions/tests/test_inkex_styles.py
@@ -0,0 +1,229 @@
+# coding=utf-8
+"""
+Test Inkex style parsing functionality.
+"""
+
+import pytest
+
+from inkex.styles import Style
+from inkex.colors import Color
+from inkex.tester import TestCase
+from inkex.tester.svg import svg_file
+
+class StyleTest(TestCase):
+    """Test path API and calculations"""
+
+    def test_new_style(self):
+        """Create a style from a path string"""
+        stl = Style("border-color: blue; border-width: 4px;")
+        self.assertEqual(str(stl), 'border-color:blue;border-width:4px')
+
+    def test_composite(self):
+        """Test chaining styles together"""
+        stl = Style("border-color: blue;")
+        stl += "border-color: red; border-issues: true;"
+        self.assertEqual(str(stl), 'border-color:red;border-issues:true')
+        st2 = stl + "border-issues: false;"
+        self.assertEqual(str(st2), 'border-color:red;border-issues:false')
+
+    def test_inbuilts(self):
+        """Test inbuild style functions"""
+        stadd = Style("a: 1") + Style("b: 2")
+        self.assertTrue(stadd == Style("b: 2; a: 1"))
+        self.assertFalse(stadd == Style("b: 2"))
+        self.assertFalse(stadd != Style("b: 2; a: 1"))
+        self.assertEqual(stadd - "a: 4", "b: 2")
+        stadd -= "b: 3; c: 4"
+        self.assertEqual(stadd, Style("a: 1"))
+
+    def test_set_property(self):
+        """Set the style attribute directly"""
+        stl = Style()
+        stl['border-pain'] = 'green'
+        self.assertEqual(str(stl), 'border-pain:green')
+
+    def test_color_property(self):
+        """Color special handling"""
+        stl = Style("fill-opacity:0.7;fill:red;")
+        self.assertEqual(stl.get_color('fill').alpha, 0.7)
+        self.assertEqual(str(stl.get_color('fill')), 'rgba(255, 0, 0, 0.7)')
+        stl.set_color('rgba(0, 127, 0, 0.5)', 'stroke')
+        self.assertEqual(str(stl), 'fill-opacity:0.7;fill:red;stroke-opacity:0.5;stroke:#007f00')
+
+    def test_interpolate(self):
+        """Test interpolation method."""
+        stl1 = Style({'stroke-width':'0px', 'fill-opacity':1.0,'fill':Color((200, 0, 0))})
+        stl2 = Style({'stroke-width':'1pc', 'fill-opacity':0.0,'fill':Color((100, 0, 100))})
+        stl3 = stl1.interpolate(stl2, 0.5)
+        assert stl3['fill-opacity'] == pytest.approx(0.5, 1e-3)
+        assert stl3['fill'] == [150, 0, 50]
+        assert stl3['stroke-width'] == '8px'
+
+class AttribFallbackTest(TestCase):
+    """Test the fallback style for handling attribute based styles"""
+    def setUp(self):
+        self.svg = svg_file(self.data_file('svg', 'css.svg'))
+        self.elem = self.svg.getElementById('rect2')
+
+    def test_fallback_read_style(self):
+        """Style comes from style property"""
+        self.elem.style['fill'] = 'green'
+        self.elem.set('fill', 'red')
+        self.assertEqual(self.elem.fallback_style()['fill'], 'green')
+
+    def test_fallback_read_attrib(self):
+        """Style comes from attribute"""
+        self.elem.style.pop('stroke', None)
+        self.assertEqual(self.elem.fallback_style()['stroke'], None)
+        self.elem.set('stroke', 'green')
+        self.assertEqual(self.elem.fallback_style()['stroke'], 'green')
+
+    def test_fallback_read_css(self):
+        """Style from basic css will work"""
+        elem = self.svg.getElementById('rect1')
+        self.assertEqual(elem.fallback_style()['fill'], 'blue')
+
+    def test_fallback_write_style(self):
+        """Styles are set back correctly"""
+        self.elem.style['fill'] = 'green'
+        self.elem.set('fill', 'red')
+        self.elem.fallback_style()['fill'] = 'blue'
+        self.assertEqual(self.elem.style['fill'], 'blue')
+        self.assertEqual(self.elem.get('fill'), None) # Removed
+
+    def test_fallback_write_attrib(self):
+        """Attrib is written back when needed"""
+        self.elem.style.pop('stroke', None)
+        self.elem.set('stroke', 'green')
+        self.elem.fallback_style()['stroke'] = 'blue'
+        self.assertEqual(self.elem.style.get('stroke', None), None) # Still empty
+        self.assertEqual(self.elem.get('stroke'), 'blue')
+
+    def test_fallback_write_move(self):
+        """Style is moved when required"""
+        self.elem.style.pop('stroke', None)
+        self.elem.set('stroke', 'green')
+        self.elem.fallback_style(move=True)['stroke'] = 'blue'
+        self.assertEqual(self.elem.style['stroke'], 'blue')
+        self.assertEqual(self.elem.get('stroke'), None) # Moved
+
+    def test_fallback_write_css(self):
+        """Style can be set into the stylesheet style"""
+        elem = self.svg.getElementById('rect1')
+        elem.fallback_style()['fill'] = 'green'
+        self.assertIn('#rect1 {\n  fill:green;\n}', self.svg.getElementById('style1').text)
+        elem.fallback_style()['fill'] = 'red'
+        self.assertIn('#rect1 {\n  fill:red;\n}', self.svg.getElementById('style1').text)
+
+    def test_no_attr(self):
+        """Given name doesn't exist anywhere"""
+        self.elem.style = 'fill:red'
+        style = self.elem.fallback_style()
+        self.assertEqual(style.get('fill'), 'red')
+        self.assertEqual(style.get('jump'), None)
+
+class StyleSheetTest(TestCase):
+    """Test parsing style sheets"""
+    def setUp(self):
+        super(StyleSheetTest, self).setUp()
+        self.svg = svg_file(self.data_file('svg', 'css.svg'))
+        self.css = self.svg.stylesheet
+
+    def test_classes(self):
+        """Test element class manipulation"""
+        rect = self.svg.getElementById('rect2')
+        self.assertEqual(rect.get('class'), 'two')
+        self.assertEqual(rect.classes, ['two'])
+        rect.classes[0] = 'twa'
+        self.assertEqual(rect.get('class'), 'twa')
+        rect.classes.append('tri')
+        rect.classes.append('four')
+        self.assertEqual(rect.get('class'), 'twa tri four')
+        rect.classes.remove('twa')
+        self.assertEqual(rect.get('class'), 'tri four')
+        rect.classes.toggle('toggle')
+        self.assertEqual(rect.get('class'), 'tri four toggle')
+        rect.classes.toggle('toggle')
+        self.assertEqual(rect.get('class'), 'tri four')
+
+    def test_creation(self):
+        """Stylesheet is created when needed"""
+        self.svg = svg_file(self.data_file('svg', 'empty.svg'))
+        self.assertEqual(len(self.svg.stylesheets), 0)
+        self.assertEqual(len(self.svg.stylesheet), 0)
+        self.assertEqual(len(self.svg.stylesheets), 1)
+        self.svg.stylesheet.append('.cls1 { fill: blue; }')
+        self.assertIn(b'style><![CDATA[\n.cls1 {\n  fill:blue;\n}\n]]><', self.svg.tostring())
+
+    def test_parsing(self):
+        """SVG parsing provides access to stylesheets"""
+        sheets = self.svg.stylesheets
+        self.assertEqual(len(sheets), 3)
+        self.assertEqual(len(sheets[0]), 7)
+        self.assertEqual(len(sheets[1]), 0)
+        self.assertEqual(len(sheets[2]), 2)
+
+    def test_string(self):
+        """Rendered to a string"""
+        sheets = self.svg.stylesheets
+        self.assertEqual(str(sheets[0][0]), '#layer1 {\n  stroke:yellow;\n}')
+        self.assertEqual(str(sheets[2][1]), '.rule {}')
+
+    def test_lookup_by_id(self):
+        """ID CSS lookup"""
+        self.assertEqual(self.css[0].to_xpath(), "//*[@id='layer1']")
+        elem = self.svg.getElement(self.css[0].to_xpath())
+        self.assertEqual(elem.get('id'), 'layer1')
+
+    def test_lookup_by_element(self):
+        """Element name CSS lookup"""
+        self.assertEqual(self.css[1].to_xpath(), "//svg:circle")
+        elems = list(self.svg.xpath(self.css[1].to_xpath()))
+        self.assertEqual(len(elems), 2)
+        self.assertEqual(elems[0].get('id'), 'circle1')
+        self.assertEqual(elems[1].get('id'), 'circle2')
+
+    def test_lookup_by_class(self):
+        """Class name CSS lookup"""
+        self.assertEqual(self.css[2].to_xpath(),\
+            "//*[contains(concat(' ', normalize-space(@class), ' '), ' two ')]")
+        elem = self.svg.getElement(self.css[2].to_xpath())
+        self.assertEqual(elem.get('id'), 'rect2')
+
+    def test_lookup_and(self):
+        """Multiple CSS lookups"""
+        self.assertEqual(self.css[3].to_xpath(), "//*[@id='rect3']"\
+            "[contains(concat(' ', normalize-space(@class), ' '), ' three ')]")
+        elem = self.svg.getElement(self.css[3].to_xpath())
+        self.assertEqual(elem.get('id'), 'rect3')
+
+    def test_lookup_or(self):
+        """SVG rules can look up the right elements"""
+        self.assertEqual(self.css[6].to_xpath(), "//*[@id='circle1']|//*[@id='circle2']|"\
+             "//*[contains(concat(' ', normalize-space(@class), ' '), ' two ')]")
+        elems = self.svg.xpath(self.css[6].to_xpath())
+        self.assertEqual(len(elems), 3)
+        self.assertEqual(elems[0].get('id'), 'rect2')
+        self.assertEqual(elems[1].get('id'), 'circle1')
+        self.assertEqual(elems[2].get('id'), 'circle2')
+
+    def test_applied_styles(self):
+        """Are styles applied to the svg elements correctly"""
+        self.assertEqual(
+            str(self.svg.getElementById('rect1').cascaded_style()),
+            'fill:blue')
+        self.assertEqual(
+            str(self.svg.getElementById('rect2').cascaded_style()),
+            'fill:green;font:Homie')
+        self.assertEqual(
+            str(self.svg.getElementById('rect3').cascaded_style()),
+            'fill:cyan')
+        self.assertEqual(
+            str(self.svg.getElementById('rect4').cascaded_style()),
+            'fill:grey;stroke:red')
+        self.assertEqual(
+            str(self.svg.getElementById('circle1').cascaded_style()),
+            'fill:red;font:Homie')
+        self.assertEqual(
+            str(self.svg.getElementById('circle2').cascaded_style()),
+            'fill:red;font:Homie')