dirv/svelteTestHarness.js

## svelteTestHarness.js
import { JSDOM } from "jsdom";
import { bind, binding_callbacks } from "svelte/internal";

export const setDomDocument = () => {
  const dom = new JSDOM(
    "<html><body></body></html>",
    { url: "https://localhost" });
  global.document = dom.window.document;
  global.window = { ...global.window, ...dom.window };
  global.navigator = dom.window.navigator;
  global.container = document.createElement("div");
  global.document.body.appendChild(global.container);
};

export const click = formElement => {
  const evt = document.createEvent("MouseEvents");
  evt.initEvent("click", true, true);
  formElement.dispatchEvent(evt);
  return evt;
};

let mountedComponents = [];

export const mountComponent = (component, props = {}, bindings = {}) => {
  const mounted = new component({ target: global.container, props });
  Object.keys(bindings).forEach(binding => {
    binding_callbacks.push(() => {
      bind(mounted, binding, value => {
        bindings[binding] = value
      });
    });
  });

  mountedComponents = [ mounted, ...mountedComponents ];
  return mounted;
};

export const unmountAll = () => {
  mountedComponents.forEach(component => {
    component.$destroy()
  });
  mountedComponents = [];
};
	import { JSDOM } from "jsdom";
	import { bind, binding_callbacks } from "svelte/internal";

	export const setDomDocument = () => {
	const dom = new JSDOM(
	"<html><body></body></html>",
	{ url: "https://localhost" });
	global.document = dom.window.document;
	global.window = { ...global.window, ...dom.window };
	global.navigator = dom.window.navigator;
	global.container = document.createElement("div");
	global.document.body.appendChild(global.container);
	};

	export const click = formElement => {
	const evt = document.createEvent("MouseEvents");
	evt.initEvent("click", true, true);
	formElement.dispatchEvent(evt);
	return evt;
	};

	let mountedComponents = [];

	export const mountComponent = (component, props = {}, bindings = {}) => {
	const mounted = new component({ target: global.container, props });
	Object.keys(bindings).forEach(binding => {
	binding_callbacks.push(() => {
	bind(mounted, binding, value => {
	bindings[binding] = value
	});
	});
	});

	mountedComponents = [ mounted, ...mountedComponents ];
	return mounted;
	};

	export const unmountAll = () => {
	mountedComponents.forEach(component => {
	component.$destroy()
	});
	mountedComponents = [];
	};