gns3-server,gns3-gui: enable checkPhase

pkgs/applications/networking/gns3/gui.nix

@@ -6,6 +6,7 @@
 { lib
 , python3
 , fetchFromGitHub
+, qt5
 , wrapQtAppsHook
 }:
 
@@ -36,14 +37,25 @@ python3.pkgs.buildPythonApplication rec {
     importlib-resources
   ];
 
-  doCheck = false; # Failing
-
   dontWrapQtApps = true;
 
   preFixup = ''
     wrapQtApp "$out/bin/gns3"
   '';
 
+  doCheck = true;
+
+  checkInputs = with python3.pkgs; [
+    pytestCheckHook
+  ];
+
+  preCheck = ''
+    export HOME=$(mktemp -d)
+    export QT_PLUGIN_PATH="${qt5.qtbase.bin}/${qt5.qtbase.qtPluginPrefix}"
+    export QT_QPA_PLATFORM_PLUGIN_PATH="${qt5.qtbase.bin}/lib/qt-${qt5.qtbase.version}/plugins";
+    export QT_QPA_PLATFORM=offscreen
+  '';
+
   meta = with lib; {
     description = "Graphical Network Simulator 3 GUI (${channel} release)";
     longDescription = ''

pkgs/applications/networking/gns3/server.nix

@@ -46,13 +46,31 @@ python3.pkgs.buildPythonApplication {
     zipstream
   ];
 
-  # Requires network access
-  doCheck = false;
-
   postInstall = ''
     rm $out/bin/gns3loopback # For Windows only
   '';
 
+  doCheck = true;
+
+  # Otherwise tests will fail to create directory
+  # Permission denied: '/homeless-shelter'
+  preCheck = ''
+    export HOME=$(mktemp -d)
+  '';
+
+  checkInputs = with python3.pkgs; [
+    pytest-aiohttp
+    pytest-rerunfailures
+    pytestCheckHook
+  ];
+
+  pytestFlagsArray = [
+    # fails on ofborg because of lack of cpu vendor information
+    "--deselect=tests/controller/gns3vm/test_virtualbox_gns3_vm.py::test_cpu_vendor_id"
+    # Rerun failed tests up to three times (flaky tests)
+    "--reruns 3"
+  ];
+
   meta = with lib; {
     description = "Graphical Network Simulator 3 server (${channel} release)";
     longDescription = ''