(bug) `capture` setting not respected

[vegerot]

Describe the bug When running

  it.only('looks right', () => {
    cy.url().should(($url) => {
      expect(new URL($url).toString()).to.equal(new URL(config.dashboardUrl).toString());
    });
    cy.document().toMatchImageSnapshot({ capture: 'runner' });
  });

the option I provide to capture does nothing. It will always use the fullScreen setting, no matter what I do.

To Reproduce Steps to reproduce the behavior:

1. Write a simple toMatchImageSnapshot test
2. Try changing the capture setting
3. notice nothing changes

Expected behavior It should respect the capture setting

Desktop (please complete the following information):

• OS: macOS
• Cypress Version: 6.5.0

Additional context

Another way to show this is to do something like

  it.only('looks right', () => {
    cy.url().should(($url) => {
      expect(new URL($url).toString()).to.equal(new URL(config.dashboardUrl).toString());
    });
    cy.screenshot({ capture: 'runner' });
    cy.document().toMatchImageSnapshot({ capture: 'runner' });
  });

As you start changing the capture settings to both screenshot and toMatchImageSnapshot, you'll see that the screenshot will update the image to look very different each time, but toMatchImageSnapshot looks identical

[vegerot]

Looking into this more, it gets even weirder. It looks like this bug only happens the FIRST time you open cypress...sometimes.

If I have a line like

    cy.document().toMatchImageSnapshot({ capture: 'runner' });

Then about 50% of the time it will use fullScreen, and the other 50% it will use viewport. I still cannot get runner to work.

[vegerot]

I'm not totally sure, but I think I figured it out (mostly).

Looks like

    cy.document().toMatchImageSnapshot({ screenshotConfig: { capture: 'runner' } });

works.

Related to #152 and #153

[vegerot]

Related to those, please update the types because