Implemented safer loading of json files

countryinfo/countryinfo.py

@@ -27,10 +27,11 @@ def __init__(self, country_name=None):
         self.__countries = {}
         for file_path in __files_path:
             if isfile(file_path):
-                country_info = json.load(open(file_path))
-                # pprint(country_info)
-                if country_info.get('name', None):
-                    self.__countries[country_info['name'].lower()] = country_info
+                with open(file_path, encoding='utf-8') as file:
+                    country_info = json.load(file)
+                    # pprint(country_info)
+                    if country_info.get('name', None):
+                        self.__countries[country_info['name'].lower()] = country_info
 
 
     def info(self):

setup.py

@@ -23,6 +23,7 @@
         exclude='tests'
     ),
     include_package_data=True,
+    test_suite="tests.Tests",
     data_files=[("data", data_files)],  # package data files
     url='https://github.com/porimol/countryinfo',
     license='MIT License',

tests.py

@@ -0,0 +1,10 @@
+import unittest
+from countryinfo import CountryInfo
+
+class Tests(unittest.TestCase):
+
+    def test_all_countries_have_names(self):
+        allCountries = CountryInfo().all()
+
+if __name__ == '__main__':
+    unittest.main()