Add chrome.cast.media class tests

test/spec/shim/media/Media.spec.js

@@ -0,0 +1,33 @@
+"use strict";
+
+describe("chrome.cast.media.Media", () => {
+    it("should have all properties", async () => {
+        const media = new chrome.cast.media.Media();
+
+        expect(media.activeTrackIds).toBe(null);
+        expect(media.currentItemId).toBe(null);
+        expect(media.customData).toBe(null);
+        expect(media.idleReason).toBe(null);
+        expect(media.items).toBe(null);
+        expect(media.loadingItemId).toBe(null);
+        expect(media.media).toBe(null);
+        expect(media.mediaSessionId).toBe(undefined);
+        expect(media.playbackRate).toBe(1);
+        expect(media.playerState).toBe("IDLE");
+        expect(media.preloadedItemId).toBe(null);
+        expect(media.repeatMode).toBe("REPEAT_OFF");
+        expect(media.sessionId).toBe(undefined);
+        expect(media.supportedMediaCommands).toEqual([]);
+        expect(media.volume).toEqual(jasmine.objectContaining({
+            level: null
+          , muted: null
+        }));
+    });
+
+    it("should have expected assigned properties", async () => {
+        const media = new chrome.cast.media.Media("__sessionId", 5);
+
+        expect(media.mediaSessionId).toBe(5);
+        expect(media.sessionId).toBe("__sessionId");
+    });
+});