Testing

Question 1

unit testing

Answer 1

testing individual components

Question 2

integration testing

Answer 2

how components behave when working with other components

Question 3

systems testing

Answer 3

how the entire application behaves, along with people using it AND the hardware

Question 4

Jest

Answer 4

javascript platform written by Facebook, can be used with any JS program, not just React

Question 5

npm test

Answer 5

commandline command for running tests

Question 6

smoke test

Answer 6

a test that ensures the component renders

Question 7

snapshot test

Answer 7

saved versions of the user interface rendered by the React component being tested

Question 8

enzyme

Answer 8

testing library built to test react components
for event handlers
inspecting state
debugging

Question 9

shallow

Answer 9

creates a wrapper instance the dev can interact with

Question 10

wrapper

Answer 10

allows the dev to simulate actions on a node

Question 11

jest.fn()

Answer 11

creates a Jest mock object, spy on an object