This test scrolls the page and checks that the layout and visual viewports respond as expected.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


JSON.stringify(internals.layoutViewportRect()) is {"top":0,"right":800,"bottom":600,"left":0,"width":800,"height":600}
JSON.stringify(internals.visualViewportRect()) is {"top":0,"right":800,"bottom":600,"left":0,"width":800,"height":600}

Scrolled to -475, 525
JSON.stringify(internals.layoutViewportRect()) is {"top":525,"right":325,"bottom":1125,"left":-475,"width":800,"height":600}
JSON.stringify(internals.visualViewportRect()) is {"top":525,"right":325,"bottom":1125,"left":-475,"width":800,"height":600}

Scrolled to -100, 776
JSON.stringify(internals.layoutViewportRect()) is {"top":776,"right":700,"bottom":1376,"left":-100,"width":800,"height":600}
JSON.stringify(internals.visualViewportRect()) is {"top":776,"right":700,"bottom":1376,"left":-100,"width":800,"height":600}

Scrolled to -50, 300
JSON.stringify(internals.layoutViewportRect()) is {"top":300,"right":750,"bottom":900,"left":-50,"width":800,"height":600}
JSON.stringify(internals.visualViewportRect()) is {"top":300,"right":750,"bottom":900,"left":-50,"width":800,"height":600}
PASS successfullyParsed is true

TEST COMPLETE