Add test case for GI import issue (Fixes #23)

tests/test_issue23/issue23.qml

@@ -0,0 +1,30 @@
+/**
+ * Issue #23: importModule runs forever
+ * https://github.com/thp/pyotherside/issues/23
+ **/
+
+import QtQuick 2.0
+import io.thp.pyotherside 1.3
+
+Rectangle {
+    width: 300
+    height: 300
+
+    Text {
+        id: text
+        anchors.centerIn: parent
+    }
+
+    Python {
+        Component.onCompleted: {
+            importModule('gi.repository.Gio', function() {
+                console.log('import completed');
+                call('gi.repository.Gio.Settings.new("org.gnome.Vino").keys', [], function(result) {
+                    text.text = result.join('\n');
+                });
+            });
+        }
+
+        onError: console.log('Error: ' + traceback);
+    }
+}