feat: Return the component from render (#4)

Author: EmilTholin

Diff for: src/index.js

@@ -5,13 +5,14 @@ const mountedContainers = new Set()
 export const render = (Component, options) => {
   const target = document.body.appendChild(document.createElement('div'))
 
-  const rendered = new Component({
+  const component = new Component({
     ...options,
     target,
   })
 
-  mountedContainers.add(rendered)
+  mountedContainers.add(component)
   return {
+    component,
     ...getQueriesForElement(document.body),
   }
 }

Diff for: tests/queries.spec.js

@@ -1,4 +1,4 @@
-import {render, fireEvent, waitForElement, cleanup} from '../src'
+import {render, fireEvent, wait, waitForElement, cleanup} from '../src'
 import App from './example/App.svelte'
 import 'jest-dom/extend-expect'
 
@@ -19,4 +19,14 @@ describe('queries', () => {
 
     expect(button).toBeInTheDocument()
   })
+
+  test('programmatically change props', async () => {
+    const {component, getByText} = render(App, {props: {name: 'world'}})
+
+    expect(getByText('Hello world!')).toBeInTheDocument()
+
+    component.$set({name: 'foo'})
+
+    await wait(() => expect(getByText('Hello foo!')).toBeInTheDocument())
+  })
 })