Add inline css + css tests

pygal/graph/datey.py

@@ -51,7 +51,7 @@ class DateY(XY):
     def _todate(self, d):
         """ Converts a number to a date """
         currDateTime = self._offset + datetime.timedelta(seconds=d or 0)
-        return currDateTime.strftime( self.x_label_format )
+        return currDateTime.strftime(self.x_label_format)
 
     def _tonumber(self, d):
         """ Converts a date to a number """

pygal/svg.py

@@ -74,18 +74,21 @@ class Svg(object):
                     etree.PI(
                         u('xml-stylesheet'), u('href="%s"' % css)))
             else:
-                if not os.path.exists(css):
-                    css = os.path.join(
-                        os.path.dirname(__file__), 'css', css)
-                with io.open(css, encoding='utf-8') as f:
-                    css_text = template(
-                        f.read(),
-                        style=self.graph.config.style,
-                        colors=colors,
-                        font_sizes=self.graph.config.font_sizes(),
-                        id=self.id)
-                    if not self.graph.pretty_print:
-                        css_text = minify_css(css_text)
+                if css.startswith('inline:'):
+                    css_text = css[len('inline:'):]
+                else:
+                    if not os.path.exists(css):
+                        css = os.path.join(
+                            os.path.dirname(__file__), 'css', css)
+                    with io.open(css, encoding='utf-8') as f:
+                        css_text = template(
+                            f.read(),
+                            style=self.graph.config.style,
+                            colors=colors,
+                            font_sizes=self.graph.config.font_sizes(),
+                            id=self.id)
+                if not self.graph.pretty_print:
+                    css_text = minify_css(css_text)
                 all_css.append(css_text)
         self.node(
             self.defs, 'style', type='text/css').text = '\n'.join(all_css)

pygal/test/test_config.py

@@ -288,3 +288,29 @@ def test_include_x_axis(Chart):
     chart.include_x_axis = True
     q = chart.render_pyquery()
     assert '0.0' in q(yaxis).map(texts)
+
+
+def test_css(Chart):
+    css = "{{ id }}text { fill: #bedead; }\n"
+    css_file = '/tmp/pygal_custom_style.css'
+    with open(css_file, 'w') as f:
+        f.write(css)
+
+    config = Config()
+    config.css.append(css_file)
+
+    chart = Chart(config)
+    chart.add('/', [10, 1, 5])
+    svg = chart.render().decode('utf-8')
+    assert '#bedead' in svg
+
+
+def test_inline_css(Chart):
+    css = "{{ id }}text { fill: #bedead; }\n"
+
+    config = Config()
+    config.css.append('inline:' + css)
+    chart = Chart(config)
+    chart.add('/', [10, 1, 5])
+    svg = chart.render().decode('utf-8')
+    assert '#bedead' in svg