When running the tests with either ‘npm start’ or ‘yarn start’ it now throws an error.
`Determining test suites to run…Error: This promise must be present when running with -o.
at /Users/Devinci/Sites/Projects/tdd-examples/React-TDD/node_modules/jest-cli/build/search_source.js:202:17
at Generator.next (<anonymous>)
at step (/Users/Devinci/Sites/Projects/tdd-examples/React-TDD/node_modules/jest-cli/build/search_source.js:19:362)
at /Users/Devinci/Sites/Projects/tdd-examples/React-TDD/node_modules/jest-cli/build/search_source.js:19:592
at new Promise (<anonymous>)
at /Users/Devinci/Sites/Projects/tdd-examples/React-TDD/node_modules/jest-cli/build/search_source.js:19:273
at SearchSource.getTestPaths (/Users/Devinci/Sites/Projects/tdd-examples/React-TDD/node_modules/jest-cli/build/search_source.js:216:10)
at /Users/Devinci/Sites/Projects/tdd-examples/React-TDD/node_modules/jest-cli/build/run_jest.js:44:29
at Generator.next (<anonymous>)
at step (/Users/Devinci/Sites/Projects/tdd-examples/React-TDD/node_modules/jest-cli/build/run_jest.js:23:380)`
