test(consoleStream): rewrite to better test process.stdout

src/consoleStream.test.js

@@ -1,29 +1,23 @@
-import consoleStream from './consoleStream'
+import { mockProcessStdout } from 'jest-mock-process'
 
-describe("Console stream", () => {
- let consoleLogData = ""
- const storeLog = (inputs) => (consoleLogData += inputs)
- it("streams correctly", async (done) => {
- console["log"] = jest.fn(storeLog)
+describe('Console stream', () => {
+ let consoleStream
+ let mockStdout
 
- const stream = consoleStream({})
- stream.write(JSON.stringify({id: 1, name: `item first`}))
+ beforeAll(() => {
+ mockStdout = mockProcessStdout()
+ consoleStream = require('./consoleStream').default
+ })
 
+ it('streams correctly', () => {
+ const stream = consoleStream()
+ stream.write(
+ JSON.stringify({ id: 1, name: `item first`, time: 1594310416073 })
+ )
  stream.end()
 
- const parsedLogData = JSON.parse(consoleLogData)
-
- expect(parsedLogData).toMatchObject({
- "metadata": {
- "context": {},
- "id": 1,
- "name": "item first",
- "level": "info"
- },
- "message": "info"
- }
+ expect(mockStdout).toHaveBeenCalledWith(
+ '{"metadata":{"id":1,"name":"item first","context":{},"level":"info"},"message":"info","timestamp":1594310416073}\n'
  )
- done()
  })
 })
-