add missing unit tests

public/contexts/__tests__/chat_context.test.tsx

@@ -0,0 +1,41 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import React from 'react';
+import { renderHook } from '@testing-library/react-hooks';
+import { useChatContext, ChatContext } from '../chat_context';
+
+describe('useChatContext', () => {
+  it('should return chat context after useChatContext called', () => {
+    const chatContextValueMock = {
+      setSessionId: jest.fn(),
+      selectedTabId: 'chat' as const,
+      setSelectedTabId: jest.fn(),
+      flyoutVisible: true,
+      flyoutFullScreen: true,
+      setFlyoutVisible: jest.fn(),
+      setFlyoutComponent: jest.fn(),
+      userHasAccess: true,
+      contentRenderers: {},
+      actionExecutors: {},
+      currentAccount: { username: 'foo', tenant: '' },
+      setTitle: jest.fn(),
+      setTraceId: jest.fn(),
+    };
+    const { result } = renderHook(useChatContext, {
+      wrapper: ({ children }) => (
+        <ChatContext.Provider value={chatContextValueMock}>{children}</ChatContext.Provider>
+      ),
+    });
+
+    expect(result.current).toBe(chatContextValueMock);
+  });
+
+  it('should return error if context provider missed', () => {
+    const { result } = renderHook(useChatContext);
+
+    expect(result.error).toMatchInlineSnapshot(`[Error: ChatContext is not set]`);
+  });
+});

public/tabs/chat/messages/message_content.test.tsx

@@ -16,10 +16,14 @@ jest.mock('../../../components/core_visualization', () => {
 
 describe('<MessageContent />', () => {
   const pplVisualizationRenderMock = jest.fn();
+  const customizedRenderMock = jest.fn();
 
   beforeEach(() => {
     jest.spyOn(chatContextExports, 'useChatContext').mockReturnValue({
-      contentRenderers: { ppl_visualization: pplVisualizationRenderMock },
+      contentRenderers: {
+        ppl_visualization: pplVisualizationRenderMock,
+        customized_content_type: customizedRenderMock,
+      },
     });
   });
 
@@ -87,4 +91,17 @@ describe('<MessageContent />', () => {
     );
     expect(pplVisualizationRenderMock).toHaveBeenCalledWith({ query: 'mock ppl query' });
   });
+
+  it('should render customized render content', () => {
+    render(
+      <MessageContent
+        message={{
+          type: 'output',
+          contentType: 'customized_content_type',
+          content: 'mock customized content',
+        }}
+      />
+    );
+    expect(customizedRenderMock).toHaveBeenCalledWith('mock customized content');
+  });
 });

public/utils/tests/notebook.test.ts

@@ -0,0 +1,160 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import * as uuidExports from 'uuid';
+import { convertMessagesToParagraphs } from '../notebook';
+
+jest.mock('uuid', () => ({
+  ...jest.requireActual('uuid'),
+  __esModule: true,
+}));
+
+describe('notebook convertMessagesToParagraphs utils', () => {
+  beforeAll(() => {
+    jest.useFakeTimers();
+    jest.setSystemTime(new Date(2023, 11, 26));
+    jest.spyOn(uuidExports, 'v4').mockReturnValue('a-fixed-uuid');
+  });
+  afterAll(() => {
+    jest.useRealTimers();
+    jest.spyOn(uuidExports, 'v4').mockRestore();
+  });
+  it('should return consistent paragraphs if contentType is text', () => {
+    expect(
+      convertMessagesToParagraphs([{ type: 'input', contentType: 'text', content: 'bar' }], 'foo')
+    ).toMatchInlineSnapshot(`
+      Array [
+        Object {
+          "dateCreated": "2023-12-26T00:00:00.000Z",
+          "dateModified": "2023-12-26T00:00:00.000Z",
+          "id": "paragraph_a-fixed-uuid",
+          "input": Object {
+            "inputText": "%md
+      foo: bar",
+            "inputType": "MARKDOWN",
+          },
+          "output": Array [
+            Object {
+              "execution_time": "0 ms",
+              "outputType": "MARKDOWN",
+              "result": "foo: bar",
+            },
+          ],
+        },
+      ]
+    `);
+  });
+
+  it('should return consistent paragraphs if contentType is markdown', () => {
+    expect(
+      convertMessagesToParagraphs(
+        [{ type: 'output', contentType: 'markdown', content: 'bar' }],
+        'foo'
+      )
+    ).toMatchInlineSnapshot(`
+      Array [
+        Object {
+          "dateCreated": "2023-12-26T00:00:00.000Z",
+          "dateModified": "2023-12-26T00:00:00.000Z",
+          "id": "paragraph_a-fixed-uuid",
+          "input": Object {
+            "inputText": "%md
+      OpenSearch Assistant: bar",
+            "inputType": "MARKDOWN",
+          },
+          "output": Array [
+            Object {
+              "execution_time": "0 ms",
+              "outputType": "MARKDOWN",
+              "result": "OpenSearch Assistant: bar",
+            },
+          ],
+        },
+      ]
+    `);
+  });
+
+  it('should return consistent paragraphs if contentType is error', () => {
+    expect(
+      convertMessagesToParagraphs([{ type: 'output', contentType: 'error', content: 'bar' }], 'foo')
+    ).toMatchInlineSnapshot(`
+      Array [
+        Object {
+          "dateCreated": "2023-12-26T00:00:00.000Z",
+          "dateModified": "2023-12-26T00:00:00.000Z",
+          "id": "paragraph_a-fixed-uuid",
+          "input": Object {
+            "inputText": "%md
+      OpenSearch Assistant: bar",
+            "inputType": "MARKDOWN",
+          },
+          "output": Array [
+            Object {
+              "execution_time": "0 ms",
+              "outputType": "MARKDOWN",
+              "result": "OpenSearch Assistant: bar",
+            },
+          ],
+        },
+      ]
+    `);
+  });
+
+  it('should return consistent paragraphs if contentType is visualization', () => {
+    expect(
+      convertMessagesToParagraphs(
+        [{ type: 'output', contentType: 'visualization', content: 'bar' }],
+        'foo'
+      )
+    ).toMatchInlineSnapshot(`
+      Array [
+        Object {
+          "dateCreated": "2023-12-26T00:00:00.000Z",
+          "dateModified": "2023-12-26T00:00:00.000Z",
+          "id": "paragraph_a-fixed-uuid",
+          "input": Object {
+            "inputText": "{\\"viewMode\\":\\"view\\",\\"panels\\":{\\"1\\":{\\"gridData\\":{\\"x\\":0,\\"y\\":0,\\"w\\":50,\\"h\\":20,\\"i\\":\\"1\\"},\\"type\\":\\"visualization\\",\\"explicitInput\\":{\\"id\\":\\"1\\",\\"savedObjectId\\":\\"bar\\"}}},\\"isFullScreenMode\\":false,\\"filters\\":[],\\"useMargins\\":false,\\"id\\":\\"random_html_id\\",\\"timeRange\\":{\\"to\\":\\"now\\",\\"from\\":\\"now-15m\\"},\\"title\\":\\"embed_viz_random_html_id\\",\\"query\\":{\\"query\\":\\"\\",\\"language\\":\\"lucene\\"},\\"refreshConfig\\":{\\"pause\\":true,\\"value\\":15}}",
+            "inputType": "VISUALIZATION",
+          },
+          "output": Array [
+            Object {
+              "execution_time": "0 ms",
+              "outputType": "VISUALIZATION",
+              "result": "",
+            },
+          ],
+        },
+      ]
+    `);
+  });
+
+  it('should return consistent paragraphs if contentType is not supported', () => {
+    expect(
+      convertMessagesToParagraphs(
+        [{ type: 'output', contentType: 'not-supported', content: 'bar' }],
+        'foo'
+      )
+    ).toMatchInlineSnapshot(`
+      Array [
+        Object {
+          "dateCreated": "2023-12-26T00:00:00.000Z",
+          "dateModified": "2023-12-26T00:00:00.000Z",
+          "id": "paragraph_a-fixed-uuid",
+          "input": Object {
+            "inputText": "",
+            "inputType": "",
+          },
+          "output": Array [
+            Object {
+              "execution_time": "0 ms",
+              "outputType": "",
+              "result": "",
+            },
+          ],
+        },
+      ]
+    `);
+  });
+});