add unit tests for app/utils/navigation (#8139)

app/utils/navigation/index.test.ts

@@ -0,0 +1,80 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {createIntl} from 'react-intl';
+import {Alert} from 'react-native';
+import {Navigation} from 'react-native-navigation';
+
+import {ServerErrors} from '@constants';
+import {DEFAULT_LOCALE, getTranslations} from '@i18n';
+
+import {mergeNavigationOptions, alertTeamRemove, alertChannelRemove, alertChannelArchived, alertTeamAddError} from '.';
+
+describe('Navigation utils', () => {
+    const componentId = 'component-id';
+    const options = {topBar: {title: {text: 'Test'}}};
+    const displayName = 'Test Display Name';
+    const serverError = {server_error_id: ServerErrors.TEAM_MEMBERSHIP_DENIAL_ERROR_ID};
+    const genericServerError = {server_error_id: 'api.some_server_error.id', message: 'Generic error message'};
+    const intl = createIntl({locale: DEFAULT_LOCALE, messages: getTranslations(DEFAULT_LOCALE)});
+
+    afterEach(() => {
+        jest.clearAllMocks();
+    });
+
+    it('should call Navigation.mergeOptions with the correct arguments', () => {
+        mergeNavigationOptions(componentId, options);
+        expect(Navigation.mergeOptions).toHaveBeenCalledWith(componentId, options);
+    });
+
+    it('should display alert when a user is removed from a team', () => {
+        alertTeamRemove(displayName, intl);
+        expect(Alert.alert).toHaveBeenCalledWith(
+            'Removed from team',
+            'You have been removed from team Test Display Name.',
+            [{style: 'cancel', text: 'OK'}],
+        );
+    });
+
+    it('should display alert when a user is removed from a channel', () => {
+        alertChannelRemove(displayName, intl);
+        expect(Alert.alert).toHaveBeenCalledWith(
+            'Removed from channel',
+            'You have been removed from channel Test Display Name.',
+            [{style: 'cancel', text: 'OK'}],
+        );
+    });
+
+    it('should display alert when a channel is archived', () => {
+        alertChannelArchived(displayName, intl);
+        expect(Alert.alert).toHaveBeenCalledWith(
+            'Archived channel',
+            'The channel Test Display Name has been archived.',
+            [{style: 'cancel', text: 'OK'}],
+        );
+    });
+
+    it('should display alert for team add error with default message', () => {
+        alertTeamAddError({}, intl);
+        expect(Alert.alert).toHaveBeenCalledWith(
+            'Error joining a team',
+            'There has been an error joining the team',
+        );
+    });
+
+    it('should display alert for team add error with specific server error message', () => {
+        alertTeamAddError(serverError, intl);
+        expect(Alert.alert).toHaveBeenCalledWith(
+            'Error joining a team',
+            'You need to be a member of a linked group to join this team.',
+        );
+    });
+
+    it('should display alert for team add error with generic error message', () => {
+        alertTeamAddError(genericServerError, intl);
+        expect(Alert.alert).toHaveBeenCalledWith(
+            'Error joining a team',
+            'Generic error message',
+        );
+    });
+});