add test to test savesettings

src/pages/SettingsPage/GeneralSettings.js

@@ -37,7 +37,7 @@ class GeneralSettings extends React.Component {
         return (
             <>
                 <div className={style.GeneralForm}>
-                    <Form onSubmit={(e) => {
+                    <Form data-testid='mainformsettings' onSubmit={(e) => {
                         e.preventDefault();
                         this.saveSettings();
                     }}>
@@ -102,8 +102,10 @@ class GeneralSettings extends React.Component {
             .then((response) => response.json()
                 .then((result) => {
                     if (result.success) {
+                        console.log("successfully saved settings");
                         // todo 2020-07-10: popup success
                     } else {
+                        console.log("failed to save settings");
                         // todo 2020-07-10: popup error
                     }
                 }));

src/pages/SettingsPage/GeneralSettings.test.js

@@ -24,4 +24,22 @@ describe('<GeneralSettings/>', function () {
 
         expect(wrapper.find("FormGroup").findWhere(it => it.props().controlId === "passwordfield")).toHaveLength(1);
     });
+
+    it('test savesettings', done => {
+        const wrapper = shallow(<GeneralSettings/>);
+
+        global.fetch = prepareFetchApi({success: true});
+
+        expect(global.fetch).toBeCalledTimes(0);
+        wrapper.find("[data-testid='mainformsettings']").simulate("submit");
+        expect(global.fetch).toBeCalledTimes(1);
+
+        process.nextTick(() => {
+            // expect callback to have loaded correct tag
+            expect(wrapper.state().selected).toBe("testname");
+
+            global.fetch.mockClear();
+            done();
+        });
+    });
 });