feat: Add migration for v6 account data

test/unit/init/migration/SingleContainerJsonStorage.test.ts

@@ -0,0 +1,69 @@
+import { BasicRepresentation } from '../../../../src/http/representation/BasicRepresentation';
+import type { Representation } from '../../../../src/http/representation/Representation';
+import { RepresentationMetadata } from '../../../../src/http/representation/RepresentationMetadata';
+import { SingleContainerJsonStorage } from '../../../../src/init/migration/SingleContainerJsonStorage';
+import { ResourceStore } from '../../../../src/storage/ResourceStore';
+import { NotFoundHttpError } from '../../../../src/util/errors/NotFoundHttpError';
+import { isContainerIdentifier } from '../../../../src/util/PathUtil';
+import { LDP } from '../../../../src/util/Vocabularies';
+
+describe('A SingleContainerJsonStorage', (): void => {
+  const baseUrl = 'http://example.com/';
+  const container = '.internal/accounts/';
+  let store: jest.Mocked<ResourceStore>;
+  let storage: SingleContainerJsonStorage<any>;
+
+  beforeEach(async(): Promise<void> => {
+    store = {
+      getRepresentation: jest.fn(async(id): Promise<Representation> => {
+        if (isContainerIdentifier(id)) {
+          const metadata = new RepresentationMetadata(id);
+          metadata.add(LDP.terms.contains, 'http://example.com/.internal/accounts/foo');
+          metadata.add(LDP.terms.contains, 'http://example.com/.internal/accounts/bar/');
+          metadata.add(LDP.terms.contains, 'http://example.com/.internal/accounts/baz');
+          metadata.add(LDP.terms.contains, 'http://example.com/.internal/accounts/unknown');
+          return new BasicRepresentation('', metadata);
+        }
+        if (id.path.endsWith('unknown')) {
+          throw new NotFoundHttpError();
+        }
+        return new BasicRepresentation(`{ "id": "${id.path}" }`, 'text/plain');
+      }),
+    } satisfies Partial<ResourceStore> as any;
+
+    storage = new SingleContainerJsonStorage(store, baseUrl, container);
+  });
+
+  it('only iterates over the documents in the base container.', async(): Promise<void> => {
+    const entries = [];
+    for await (const entry of storage.entries()) {
+      entries.push(entry);
+    }
+    expect(entries).toEqual([
+      [ '/foo', { id: 'http://example.com/.internal/accounts/foo' }],
+      [ '/baz', { id: 'http://example.com/.internal/accounts/baz' }],
+    ]);
+    expect(store.getRepresentation).toHaveBeenCalledTimes(4);
+    expect(store.getRepresentation).toHaveBeenNthCalledWith(1,
+      { path: 'http://example.com/.internal/accounts/' },
+      {});
+    expect(store.getRepresentation).toHaveBeenNthCalledWith(2,
+      { path: 'http://example.com/.internal/accounts/foo' },
+      { type: { 'application/json': 1 }});
+    expect(store.getRepresentation).toHaveBeenNthCalledWith(3,
+      { path: 'http://example.com/.internal/accounts/baz' },
+      { type: { 'application/json': 1 }});
+    expect(store.getRepresentation).toHaveBeenNthCalledWith(4,
+      { path: 'http://example.com/.internal/accounts/unknown' },
+      { type: { 'application/json': 1 }});
+  });
+
+  it('does nothing if the container does not exist.', async(): Promise<void> => {
+    store.getRepresentation.mockRejectedValueOnce(new NotFoundHttpError());
+    const entries = [];
+    for await (const entry of storage.entries()) {
+      entries.push(entry);
+    }
+    expect(entries).toHaveLength(0);
+  });
+});