Server landing page add test for empty projects

tests/src/python/test_qgsserver_landingpage.py

@@ -154,6 +154,15 @@ class QgsServerLandingPageTest(QgsServerAPITestBase):
             self.compareApi(
                 request, None, 'test_project_{}.json'.format(name.replace('.', '_')), subdir='landingpage')
 
+    def test_landing_page_json_empty(self):
+        """Test landing page in JSON format with no projects"""
+
+        os.environ['QGIS_SERVER_PROJECTS_DIRECTORIES'] = ''
+        os.environ['QGIS_SERVER_PROJECTS_PG_CONNECTIONS'] = ''
+        request = QgsBufferServerRequest('http://server.qgis.org/index.json')
+        self.compareApi(
+            request, None, 'test_landing_page_empty_index.json', subdir='landingpage')
+
 
 if __name__ == '__main__':
     unittest.main()

tests/testdata/qgis_server/landingpage/test_landing_page_empty_index.json

@@ -0,0 +1,21 @@
+Content-Type: application/json
+
+{
+  "links": [
+    {
+      "href": "http://server.qgis.org/index.json",
+      "rel": "self",
+      "title": "Landing page as JSON",
+      "type": "application/json"
+    },
+    {
+      "href": "http://server.qgis.org/index.html",
+      "rel": "alternate",
+      "title": "Landing page as HTML",
+      "type": "text/html"
+    }
+  ],
+  "projects": [],
+  "projects_count": 0,
+  "timeStamp": "2019-07-05T12:27:07Z"
+}