Add simple perf tool

perf.py

@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+# This file is part of pygal
+#
+# A python svg graph plotting library
+# Copyright © 2012-2013 Kozea
+#
+# This library is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# This library 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 Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with pygal. If not, see <http://www.gnu.org/licenses/>.
+
+
+from pygal import CHARTS_NAMES, CHARTS_BY_NAME
+from pygal.test import adapt
+from random import sample
+
+import timeit
+import sys
+
+
+rands = list(zip(
+    sample(range(1000), 1000),
+    sample(range(1000), 1000)))
+
+
+def perf(chart_name, length, series):
+    chart = CHARTS_BY_NAME.get(chart_name)()
+    for i in range(series):
+        chart.add('s %d' % i, adapt(chart, rands[:length]))
+    return chart
+
+
+def prt(s):
+    sys.stdout.write(s)
+    sys.stdout.flush()
+
+charts = CHARTS_NAMES if '--all' in sys.argv else 'Line',
+
+
+for chart in charts:
+    prt('%s\n' % chart)
+    prt('s\\l\t1\t10\t100')
+
+    for series in (1, 10, 100):
+        prt('\n%d\t' % series)
+        for length in (1, 10, 100):
+            times = []
+            time = timeit.timeit(
+                "c.render()",
+                setup="from __main__ import perf; c = perf('%s', %d, %d)" % (
+                    chart, length, series),
+                number=10)
+            prt('%d\t' % (1000 * time))
+    prt('\n')

pygal/test/__init__.py

@@ -43,17 +43,18 @@ def pytest_generate_tests(metafunc):
             ])
 
 
-def make_data(chart, datas):
-    def get(data):
-        if isinstance(chart, pygal.XY):
-            if isinstance(chart, pygal.DateY):
-                # Convert to a credible datetime
-                return datetime.fromtimestamp(1360000000 + data * 987654)
-            return data
-        return cut(data)
+def adapt(chart, data):
+    if isinstance(chart, pygal.XY):
+        if isinstance(chart, pygal.DateY):
+            # Convert to a credible datetime
+            return datetime.fromtimestamp(1360000000 + data * 987654)
+        return data
+    return cut(data)
+
 
+def make_data(chart, datas):
     for i, data in enumerate(datas):
         chart.add(data[0],
-                  get(data[1]),
+                  adapt(chart, data[1]),
                   secondary=bool(i % 2))
     return chart