Issue 4687 - Add Context Function get_pages_metadata to Test Site

tests/test_site/globals/get_pages_metadata.py

 import re
 from jinja2 import contextfunction
 
 
 @contextfunction
 def get_pages_metadata(context, filters=None):
     if not isinstance(filters, dict) and filters:
         raise TypeError('Filters are not a dictionary')
 
     return_data = []
     for page_name, _format in context['source'].list_pages():
         data, filename = context['source'].read_page(page_name, _format)
         page_data = parse_page_metadata(data, page_name)
 
         if filter_metadata(filters, page_data) is True:
             return_data.append(page_data)
 
     return return_data
 
 
 def parse_page_metadata(data, page):
     page_metadata = {'page': page}
     lines = data.splitlines(True)
     for i, line in enumerate(lines):
         if not re.search(r'^\s*[\w\-]+\s*=', line):
             break
         name, value = line.split('=', 1)
         value = value.strip()
         if value.startswith('[') and value.endswith(']'):
-            value = value[1:-1].strip().split(',')

[Vasily Kuznetsov, 2017/03/09 09:46:13]

It should be the other way around. We want to strip each element of the list
after splitting, not the whole list before splitting. So we need something like
this:

    value = [element.strip() for element in value[1:-1].split(',')]

[Jon Sonesen, 2017/03/10 09:17:25]

Done.

+            value = [element.strip() for element in value[1:-1].split(',')]
         page_metadata[name.strip()] = value
     return page_metadata
 
 
 def filter_metadata(filters, metadata):
     if filters is None:
         return True
     for filter_name, filter_value in filters.items():
         if filter_name not in metadata:
             return False
-        for option in filter_value.split(','):
-            if option not in metadata[filter_name]:
+        if isinstance(metadata[filter_name], list):
+            if isinstance(filter_value, basestring):
+                filter_value = [filter_value]
+            for option in filter_value:
+                if str(option) not in metadata[filter_name]:
+                    return False
+        elif filter_value != metadata[filter_name]:
                 return False
     return True