Added debug settings for testing and e2e tests (#29175)

webapp/channels/src/components/advanced_text_editor/send_button/scheduled_post_custom_time_modal/scheduled_post_custom_time_modal.tsx

@@ -8,6 +8,7 @@ import {FormattedMessage, useIntl} from 'react-intl';
 import {useDispatch, useSelector} from 'react-redux';
 
 import {savePreferences} from 'mattermost-redux/actions/preferences';
+import {testingEnabled} from 'mattermost-redux/selectors/entities/general';
 import {generateCurrentTimezoneLabel, getCurrentTimezone} from 'mattermost-redux/selectors/entities/timezone';
 import {getCurrentUserId} from 'mattermost-redux/selectors/entities/users';
 
@@ -76,6 +77,8 @@ export default function ScheduledPostCustomTimeModal({channelId, onExited, onCon
 
     const label = formatMessage({id: 'schedule_post.custom_time_modal.title', defaultMessage: 'Schedule message'});
 
+    const timePickerInterval = useSelector(testingEnabled) ? 1 : undefined;
+
     return (
         <DateTimePickerModal
             className='scheduled_post_custom_time_modal'
@@ -107,6 +110,7 @@ export default function ScheduledPostCustomTimeModal({channelId, onExited, onCon
             relativeDate={true}
             onCancel={onExited}
             errorText={errorMessage}
+            timePickerInterval={timePickerInterval}
         />
     );
 }

webapp/channels/src/packages/mattermost-redux/src/selectors/entities/general.ts

@@ -161,3 +161,7 @@ export const getUsersStatusAndProfileFetchingPollInterval: (state: GlobalState)
 export function developerModeEnabled(state: GlobalState): boolean {
     return state.entities.general.config.EnableDeveloper === 'true';
 }
+
+export function testingEnabled(state: GlobalState): boolean {
+    return state.entities.general.config.EnableTesting === 'true';
+}