migrate to something else now that karma is deprecated

[Trott]

No description provided.

[screensaversclub]

Tried jest, pretty much drop in at this point.

1. Installed jest
2. Simple change for setup and teardown hooks:

diff --git a/test/react-native.test.js b/test/react-native.test.js
index ccfb681..5a7c777 100644
--- a/test/react-native.test.js
+++ b/test/react-native.test.js
@@ -5,11 +5,11 @@ if (typeof window === 'undefined') {
   describe('React Native-like environment', function () {
     let slug

-    before(function () {
+    beforeEach(function () {
       global.window = {}
       delete require.cache[require.resolve('../slug')]
     })
-    after(function () {
+    afterEach(function () {
       delete global.window
       delete require.cache[require.resolve('../slug')]
     })

3. Running jest at this point produces the following:

We could possibly migrate all assert functions to Jest's expect , which would allow us to remove a few devDependencies (https://jestjs.io/docs/migration-guide).

Here's a WIP:
main...screensaversclub:slug:jest-setup
(sorry about the formatting - I ran npx standard --fix so that the test would run. Will figure out how to preserve formatting if this refactor exercise looks like a go ahead)

[Trott]

If I'm not mistaken, that looks like you're using jest to replace mocha, which we don't need. We need browser testing.