Create test_notebooks

Author: Martin Journois

docs/examples/.gitignore

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+*.ipynb
+*.md

tests/test_notebooks.py

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+# -*- coding: utf-8 -*-
+"""
+Folium Notebooks Tests
+----------------------
+
+Here we try to execute all notebooks that are in `folium/examples`.
+"""
+
+import os
+import folium
+import nbconvert
+
+rootpath = os.path.abspath(os.path.dirname(__file__))
+
+
+class NotebookTester(object):
+    def __init__(self, filename):
+        self.filename = filename
+    def __call__(self, exporter=None, filename=None):
+        raw_nb = nbconvert.exporters.Exporter().from_filename(self.filename)
+        raw_nb[0].metadata.setdefault('kernelspec',{})['name'] = 'python'
+        exec_nb = nbconvert.preprocessors.ExecutePreprocessor().preprocess(*raw_nb)
+
+        if exporter is not None:
+            out_nb = nbconvert.exporters.MarkdownExporter().from_notebook_node(*exec_nb)
+            if filename is None:
+                assert self.filename.endswith('.ipynb')
+                filename = self.filename[:-6] + exporter.file_extension
+            open(filename,'w').write(out_nb[0].encode('utf-8'))
+
+class TestNotebooks(object):
+    _filepath = rootpath.rstrip('/')+'/../examples/'
+    _nblist = [x for x in os.listdir(_filepath) if x.endswith('.ipynb')]
+
+for fn in TestNotebooks._nblist:
+            setattr(TestNotebooks,
+                    'test_'+folium.utilities._camelify(fn[:-6]),
+                    NotebookTester(TestNotebooks._filepath+fn).__call__
+                    )