devtools/client/responsive.html/test/unit/test_change_pixel_ratio.js


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/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Test changing the viewport pixel ratio.

const { addViewport, changePixelRatio } =
  require("devtools/client/responsive.html/actions/viewports");
const NEW_PIXEL_RATIO = 5.5;

add_task(function* () {
  let store = Store();
  const { getState, dispatch } = store;

  dispatch(addViewport());
  dispatch(changePixelRatio(0, NEW_PIXEL_RATIO));

  let viewport = getState().viewports[0];
  equal(viewport.pixelRatio.value, NEW_PIXEL_RATIO,
    `Viewport's pixel ratio changed to ${NEW_PIXEL_RATIO}`);
});