Implemented short URLs exporting

test/common/services/ReportExporter.test.ts

@@ -0,0 +1,47 @@
+import { Mock } from 'ts-mockery';
+import { CsvJson } from 'csvjson';
+import { ReportExporter } from '../../../src/common/services/ReportExporter';
+import { NormalizedVisit } from '../../../src/visits/types';
+import { windowMock } from '../../mocks/WindowMock';
+
+describe('ReportExporter', () => {
+  const toCSV = jest.fn();
+  const csvToJsonMock = Mock.of<CsvJson>({ toCSV });
+  let exporter: ReportExporter;
+
+  beforeEach(jest.clearAllMocks);
+  beforeEach(() => {
+    (global as any).Blob = class Blob {}; // eslint-disable-line @typescript-eslint/no-extraneous-class
+    (global as any).URL = { createObjectURL: () => '' };
+
+    exporter = new ReportExporter(windowMock, csvToJsonMock);
+  });
+
+  describe('exportVisits', () => {
+    it('parses provided visits to CSV', () => {
+      const visits: NormalizedVisit[] = [
+        {
+          browser: 'browser',
+          city: 'city',
+          country: 'country',
+          date: 'date',
+          latitude: 0,
+          longitude: 0,
+          os: 'os',
+          referer: 'referer',
+          potentialBot: false,
+        },
+      ];
+
+      exporter.exportVisits('my_visits.csv', visits);
+
+      expect(toCSV).toHaveBeenCalledWith(visits, { headers: 'key', wrap: true });
+    });
+
+    it('skips execution when list of visits is empty', () => {
+      exporter.exportVisits('my_visits.csv', []);
+
+      expect(toCSV).not.toHaveBeenCalled();
+    });
+  });
+});