Some server test python3 updates

tests/src/python/qgis_local_server.py

@@ -425,7 +425,7 @@ def get_capabilities(self, params, browser=False):
         url = self._fcgi_url + '?' + self.process_params(params)
 
         res = urllib.request.urlopen(url)
-        xml = res.read()
+        xml = res.read().decode('utf-8')
         if browser:
             tmp_name = getTempfilePath('html')
             with open(tmp_name, 'wt') as temp_html:
@@ -732,7 +732,7 @@ def tearDown(self):
             # print repr(res)
             assert (res is not None
                     and res.getcode() == 200
-                    and 'Web Server Working' in res.read()), msg
+                    and 'Web Server Working' in res.read().decode('utf-8')), msg
 
             # verify basic wms service
             params = {

tests/src/python/test_qgsserver.py

@@ -18,7 +18,7 @@
 import urllib.request
 import urllib.parse
 import urllib.error
-from mimetools import Message
+import email
 from io import StringIO
 from qgis.server import QgsServer
 from qgis.core import QgsMessageLog
@@ -45,7 +45,10 @@ def setUp(self):
         self.server = QgsServer()
 
     def assert_headers(self, header, body):
-        headers = Message(StringIO(header))
+        stream = StringIO()
+        header_string = header.decode('utf-8')
+        stream.write(header_string)
+        headers = email.message_from_string(header_string)
         if 'content-length' in headers:
             content_length = int(headers['content-length'])
             body_length = len(body)