first (part 3: src directory)

src/tasks/historical-results-sync.task.spec.ts

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+import { FeederService } from '../modules/feeder/feeder.service';
+import { HistoricalResultsSyncTask } from './historical-results-sync.task';
+
+describe('HistoricalResultsSyncTask', () => {
+  const runPreviousDayCompletedMatchesScan = jest.fn();
+  let task: HistoricalResultsSyncTask;
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+    delete process.env.FEEDER_MODE;
+
+    task = new HistoricalResultsSyncTask({
+      runPreviousDayCompletedMatchesScan,
+    } as unknown as FeederService);
+  });
+
+  afterEach(() => {
+    delete process.env.FEEDER_MODE;
+  });
+
+  it('calls feeder service in normal mode', async () => {
+    await task.syncPreviousDayCompletedMatches();
+
+    expect(runPreviousDayCompletedMatchesScan).toHaveBeenCalledTimes(1);
+  });
+
+  it('skips execution in historical feeder mode', async () => {
+    process.env.FEEDER_MODE = 'historical';
+
+    await task.syncPreviousDayCompletedMatches();
+
+    expect(runPreviousDayCompletedMatchesScan).not.toHaveBeenCalled();
+  });
+});