Add chrome.cast.media class tests

test/spec/shim/media/MediaInfo.spec.js

@@ -0,0 +1,23 @@
+"use strict";
+
+describe("chrome.cast.media.MediaInfo", () => {
+    it("should have all properties", async () => {
+        const mediaInfo = new chrome.cast.media.MediaInfo();
+
+        expect(mediaInfo.contentId).toBe(undefined);
+        expect(mediaInfo.contentType).toBe(undefined);
+        expect(mediaInfo.customData).toBe(null);
+        expect(mediaInfo.duration).toBe(null);
+        expect(mediaInfo.metadata).toBe(null);
+        expect(mediaInfo.streamType).toBe("BUFFERED");
+        expect(mediaInfo.textTrackStyle).toBe(null);
+        expect(mediaInfo.tracks).toBe(null);
+    });
+
+    it("should have expected assigned properties", async () => {
+        const mediaInfo = new chrome.cast.media.MediaInfo("__contentId", "video/mp4");
+
+        expect(mediaInfo.contentId).toBe("__contentId");
+        expect(mediaInfo.contentType).toBe("video/mp4");
+    });
+});