Cannot run jsdom unit tests for files that import Plotly due to missing browser functions

We are using Plotly in our react application and are currently experiencing issues while unit testing components that import the Plotly library either directly, or further down the component tree.

Currently we are using the latest versions of jsdom and mocha to run our unit tests.

It appears the issue is in the Plotly node module, because our unit test suite breaks due to undefined functions in node_modules/plotly.js/dist/plotly.js

For example we get:

ReferenceError: getComputedStyle is not defined

We have attempted to stub that function (as mentioned in the closed issue #1675), but more undefined functions arise and it becomes a bit of a rabbit hole trying to stub all of the missing functions.

Reproduziere den Fehler, indem du Plotly aus einer mit jsdom und Mocha getesteten Komponente importierst, und untersuche dann node_modules/plotly.js/dist/plotly.js rund um die erste undefinierte Browserfunktion. Verfolge die zusätzlich fehlenden Funktionen und bestimme das beabsichtigte, testkompatible Verhalten; abgeschlossen ist die Aufgabe, wenn Plotly ohne die aktuelle Kaskade von Browserfunktionsfehlern importiert wird.