Add type information to fields api

It is useful to know both the name and type information of fields.

Expose the database type in the API, clients can read.

Author: cmatthew

lnt/server/ui/api.py

@@ -71,7 +71,7 @@ def get():
         ts = request.get_testsuite()
 
         result = common_fields_factory()
-        result['fields'] = [{'column_id': i, 'column_name': f.column.name}
+        result['fields'] = [{'column_id': i, 'column_name': f.column.name, 'column_type': str(f.column.type)}
                             for i, f in enumerate(ts.sample_fields)]
 
         return result

tests/server/ui/test_api.py

@@ -256,6 +256,7 @@ def test_fields_api(self):
         f0 = fields[0]
         self.assertEqual(0, f0['column_id'])
         self.assertEqual('compile_time', f0['column_name'])
+        self.assertEqual('FLOAT', f0['column_type'])
 
     def test_tests_api(self):
         """Tests API."""