[Discover] Fix Initialization if No Saved Query (#8930) (#8996)

* replace default query with current query
* Changeset file for PR #8930 created/updated
* adding unit tests



---------



(cherry picked from commit 080b0db)

Signed-off-by: Sean Li <[email protected]>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: opensearch-changeset-bot[bot] <154024398+opensearch-changeset-bot[bot]@users.noreply.github.com>

changelogs/fragments/8930.yml

@@ -0,0 +1,2 @@
+fix:
+- Update saved search initialization logic to use current query instead of default query ([#8930](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/8930))

src/plugins/discover/public/application/view_components/utils/use_search.test.tsx

@@ -18,12 +18,37 @@ jest.mock('./use_index_pattern', () => ({
   useIndexPattern: jest.fn(),
 }));
 
+const mockQuery = {
+  query: 'test query',
+  language: 'test language',
+};
+
+const mockDefaultQuery = {
+  query: 'default query',
+  language: 'default language',
+};
+
 const mockSavedSearch = {
   id: 'test-saved-search',
   title: 'Test Saved Search',
   searchSource: {
     setField: jest.fn(),
-    getField: jest.fn(),
+    getField: jest.fn().mockReturnValue(mockQuery),
+    fetch: jest.fn(),
+    getSearchRequestBody: jest.fn().mockResolvedValue({}),
+    getOwnField: jest.fn(),
+    getDataFrame: jest.fn(() => ({ name: 'test-pattern' })),
+  },
+  getFullPath: jest.fn(),
+  getOpenSearchType: jest.fn(),
+};
+
+const mockSavedSearchEmptyQuery = {
+  id: 'test-saved-search',
+  title: 'Test Saved Search',
+  searchSource: {
+    setField: jest.fn(),
+    getField: jest.fn().mockReturnValue(undefined),
     fetch: jest.fn(),
     getSearchRequestBody: jest.fn().mockResolvedValue({}),
     getOwnField: jest.fn(),
@@ -215,4 +240,36 @@ describe('useSearch', () => {
       expect.objectContaining({ status: ResultStatus.LOADING, rows: [] })
     );
   });
+
+  it('should load saved search', async () => {
+    const services = createMockServices();
+    services.data.query.queryString.setQuery = jest.fn();
+
+    const { waitForNextUpdate } = renderHook(() => useSearch(services), {
+      wrapper,
+    });
+
+    await act(async () => {
+      await waitForNextUpdate();
+    });
+
+    expect(services.data.query.queryString.setQuery).toBeCalledWith(mockQuery);
+  });
+
+  it('if no saved search, use get query', async () => {
+    const services = createMockServices();
+    services.getSavedSearchById = jest.fn().mockResolvedValue(mockSavedSearchEmptyQuery);
+    services.data.query.queryString.getQuery = jest.fn().mockReturnValue(mockDefaultQuery);
+    services.data.query.queryString.setQuery = jest.fn();
+
+    const { waitForNextUpdate } = renderHook(() => useSearch(services), {
+      wrapper,
+    });
+
+    await act(async () => {
+      await waitForNextUpdate();
+    });
+
+    expect(services.data.query.queryString.setQuery).toBeCalledWith(mockDefaultQuery);
+  });
 });

src/plugins/discover/public/application/view_components/utils/use_search.ts

@@ -392,8 +392,7 @@ export const useSearch = (services: DiscoverViewServices) => {
       const savedSearchInstance = await getSavedSearchById(savedSearchId);
 
       const query =
-        savedSearchInstance.searchSource.getField('query') ||
-        data.query.queryString.getDefaultQuery();
+        savedSearchInstance.searchSource.getField('query') || data.query.queryString.getQuery();
 
       const isEnhancementsEnabled = await uiSettings.get('query:enhancements:enabled');
       if (isEnhancementsEnabled && query.dataset) {
@@ -432,7 +431,7 @@ export const useSearch = (services: DiscoverViewServices) => {
       }
 
       filterManager.setAppFilters(actualFilters);
-      data.query.queryString.setQuery(savedQuery ? data.query.queryString.getQuery() : query);
+      data.query.queryString.setQuery(query);
       setSavedSearch(savedSearchInstance);
 
       if (savedSearchInstance?.id) {