[Enterprise Search] Add helpers for flash messages (#77677)

* [Enterprise Search] Add a helper for success messages

* Move method to separate file

* Update test names

* D R Y

* I really need to slow down  🤦🏼‍♂️

* PR feedback

* Typo

x-pack/plugins/enterprise_search/public/applications/shared/flash_messages/index.ts

@@ -13,3 +13,4 @@ export {
 } from './flash_messages_logic';
 export { FlashMessagesProvider } from './flash_messages_provider';
 export { flashAPIErrors } from './handle_api_errors';
+export { setSuccessMessage, setErrorMessage, setQueuedSuccessMessage } from './set_message_helpers';

x-pack/plugins/enterprise_search/public/applications/shared/flash_messages/set_message_helpers.test.ts

@@ -0,0 +1,53 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import {
+  FlashMessagesLogic,
+  setSuccessMessage,
+  setErrorMessage,
+  setQueuedSuccessMessage,
+} from './';
+
+describe('Flash Message Helpers', () => {
+  const message = 'I am a message';
+
+  beforeEach(() => {
+    FlashMessagesLogic.mount();
+  });
+
+  it('setSuccessMessage()', () => {
+    setSuccessMessage(message);
+
+    expect(FlashMessagesLogic.values.messages).toEqual([
+      {
+        message,
+        type: 'success',
+      },
+    ]);
+  });
+
+  it('setErrorMessage()', () => {
+    setErrorMessage(message);
+
+    expect(FlashMessagesLogic.values.messages).toEqual([
+      {
+        message,
+        type: 'error',
+      },
+    ]);
+  });
+
+  it('setQueuedSuccessMessage()', () => {
+    setQueuedSuccessMessage(message);
+
+    expect(FlashMessagesLogic.values.queuedMessages).toEqual([
+      {
+        message,
+        type: 'success',
+      },
+    ]);
+  });
+});

x-pack/plugins/enterprise_search/public/applications/shared/flash_messages/set_message_helpers.ts

@@ -0,0 +1,28 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { FlashMessagesLogic } from './';
+
+export const setSuccessMessage = (message: string) => {
+  FlashMessagesLogic.actions.setFlashMessages({
+    type: 'success',
+    message,
+  });
+};
+
+export const setErrorMessage = (message: string) => {
+  FlashMessagesLogic.actions.setFlashMessages({
+    type: 'error',
+    message,
+  });
+};
+
+export const setQueuedSuccessMessage = (message: string) => {
+  FlashMessagesLogic.actions.setQueuedMessages({
+    type: 'success',
+    message,
+  });
+};