Update log_tree to use immutables

- graphql config
- log_tree update
- test adjustments

app/assets/javascripts/repository/graphql.js

@@ -58,6 +58,7 @@ const defaultClient = createDefaultClient(
         /* eslint-enable @gitlab/require-i18n-strings */
       },
     },
+    assumeImmutableResults: true,
   },
 );
 

app/assets/javascripts/repository/log_tree.js

+import produce from 'immer';
 import { normalizeData } from 'ee_else_ce/repository/utils/commit';
 import axios from '~/lib/utils/axios_utils';
 import commitsQuery from './queries/commits.query.graphql';
@@ -34,16 +35,18 @@ export function fetchLogsTree(client, path, offset, resolver = null) {
         params: { format: 'json', offset },
       },
     )
-    .then(({ data, headers }) => {
+    .then(({ data: newData, headers }) => {
       const headerLogsOffset = headers['more-logs-offset'];
-      const { commits } = client.readQuery({ query: commitsQuery });
-      const newCommitData = [...commits, ...normalizeData(data, path)];
+      const sourceData = client.readQuery({ query: commitsQuery });
+      const data = produce(sourceData, draftState => {
+        draftState.commits.push(...normalizeData(newData, path));
+      });
       client.writeQuery({
         query: commitsQuery,
-        data: { commits: newCommitData },
+        data,
       });
 
-      resolvers.forEach(r => resolveCommit(newCommitData, path, r));
+      resolvers.forEach(r => resolveCommit(data.commits, path, r));
 
       fetchpromise = null;
 

spec/frontend/repository/log_tree_spec.js

@@ -100,11 +100,13 @@ describe('fetchLogsTree', () => {
       );
     }));
 
-  it('writes query to client', () =>
-    fetchLogsTree(client, '', '0', resolver).then(() => {
+  it('writes query to client', async () => {
+    await fetchLogsTree(client, '', '0', resolver);
     expect(client.writeQuery).toHaveBeenCalledWith({
       query: expect.anything(),
       data: {
+        projectPath: 'gitlab-org/gitlab-foss',
+        escapedRef: 'master',
         commits: [
           expect.objectContaining({
             __typename: 'LogTreeCommit',
@@ -112,12 +114,14 @@ describe('fetchLogsTree', () => {
             committedDate: '2019-01-01',
             fileName: 'index.js',
             filePath: '/index.js',
+            lockLabel: false,
             message: 'testing message',
             sha: '123',
+            titleHtml: undefined,
             type: 'blob',
           }),
         ],
       },
     });
-    }));
+  });
 });