Add partial unit-test for InfoQueryList.js

tests/InfoQueryList.test.js

@@ -0,0 +1,34 @@
+const InfoQueryList = require("../modules/info/InfoQueryList");
+const video = require('../modules/types/Video');
+
+describe("create video", () => {
+   beforeEach(() => {
+      jest.clearAllMocks();
+   });
+   it('returns a video', () => {
+      const instance = instanceBuilder();
+      jest.spyOn(video.prototype, 'setMetadata').mockImplementation(() => {});
+      const result = instance.createVideo({test: "data"}, "https://test.url");
+      expect(result).toBeInstanceOf(video);
+   });
+   it('sets the metadata', () => {
+      const instance = instanceBuilder();
+      const metadataSpy = jest.spyOn(video.prototype, 'setMetadata').mockImplementation(() => {});
+      instance.createVideo({test: "data"}, "https://test.url");
+      expect(metadataSpy).toBeCalledTimes(1);
+   });
+   it('uses data.entries[0] when appropriate', () => {
+      const instance = instanceBuilder();
+      const metadataSpy = jest.spyOn(video.prototype, 'setMetadata').mockImplementation(() => {});
+      instance.createVideo({entries: [{formats: "insert_formats_here"}]}, "https://test.url");
+      expect(metadataSpy).toBeCalledWith({formats: "insert_formats_here"});
+   });
+});
+
+function instanceBuilder() {
+   const progressbar = {
+      video: { identifier: "test__id" },
+      updatePlaylist: jest.fn()
+   }
+   return new InfoQueryList("test__query", "test__env", progressbar);
+}