Add assets

Author: louisrli

module5-testing/assets/test-pyramid.png

@@ -43,12 +43,15 @@ an automated test for this, screenshot testing is a viable option.
 
 ## Smoke tests
 **Smoke tests** are a type of end-to-end test that tests the most basic cases.
-For example, if you have an a todo list app, this app may simple login users and
-try to create a list, even if your app has much more functionality. However, the
-name comes from the idea that, if you have some type of hardware and there is
-smoke, you should probably immediately shut it off without testing anything --
-it hasn't even passed the basics.
-simply 
+For example, if you have a todo list app, this app may simply login users and
+try to create a list, even if your app has much more functionality than this
+straightforward flow.
+
+However, the name "smoke test" comes from the idea that, if you have some type
+of hardware and there is smoke, you should probably immediately shut it off
+without testing anything -- it hasn't even passed the basics. Smoke tests often
+run before releasing a product as a "sanity test."
+
 ## Frequency
 In the ideal testing environment, unit tests . As tests increase in granularity
 -- that is, they include larger pieces of your system -- you want these tests to

module5-testing/r3-types-of-tests/README.md

@@ -0,0 +1,16 @@
+# Testing Libraries in JavaScript
+There are a number of testing libraries in JavaScript. The differences between them are not major. Similar to many other things that you
+will learn, if you know one of them, you will understand the general concepts of
+the others.
+
+Feel free to explore some of the tutorials below.
+* [Jest](https://jestjs.io/docs/getting-started)
+* [Mocha](https://mochajs.org/#getting-started)
+* [Jasmine](https://jasmine.github.io/pages/getting_started.html)
+* [Cypress](https://www.cypress.io/): focus on end-to-end testing
+
+Again: most of the concepts you will learn are agnostic to the framework being
+used. For example, with the properties of good tests that we discussed, it does
+not matter if you are using Jest, Mocha, Jasmine, or if you are not even using
+JavaScript. Try not to focus too much on learning a specific framework but
+instead understanding how it executes the ideas of testing.