Setting up single-player tests before adding spinner

JavaScript
585

https://jsfiddle.net/8vbug3qh/

expectation is that it throws an error.

This would be changed to what?

expect(player.i.h.width).toBeGreaterThan(0);

  it("addPlayer requires a video element", function() {
      //given
      player = undefined;

      //when
      videoPlayer.addPlayer("DIV");

      //then
      expect(player.i.h.width).toBeGreaterThan(0);
    });

I have this old set of tests where I can see how I did some of the things. https://jsfiddle.net/jbced2uk/1/

expect(fnCall).toThrowError(/Cannot read properties of undefined/);

I did this wrong: I don’t know if it can be fixed.

.toThrowError part seems top be right.

Am I able to get this to be right?

https://jsfiddle.net/t3s2aL1x/

   it("addPlayer requires a video element", function() {
      //given
      player = undefined;

      //when
      videoPlayer.addPlayer("DIV");

      //then
      const fnCall = () => videoPlayer.addPlayer();
      expect(fnCall).toThrowError(/Cannot read properties of undefined/)
    });

Here is another try: https://jsfiddle.net/t3s2aL1x/3/

   it("addPlayer requires a video element", function() {
      //given
      player = undefined;

      //when
      videoPlayer.addPlayer("DIV");

      //then
      expect(player).toThrowError(/Cannot read properties of undefined/);
    });

Here is another try: https://jsfiddle.net/t3s2aL1x/5/

   it("addPlayer requires a video element", function() {
      //given
      player = undefined;

      //when
      videoPlayer.addPlayer("DIV");

      //then
      expect(videoPlayer.addPlayer).toThrowError(/Cannot read properties of undefined/);
    });

Are any of these almost good where I would just need to make some changes to it?