@wrumsby/testcaseloader

testcaseloader

TestCaseLoader is a small utility to load test cases from files.

Files are:

• expected to be written in JavaScript
• by default in a folder named testcases (or a subfolder of this folder)
• named with the prefix input- or expected- and an index suffix (e.g. input-0.js)

Installation

npm install --save-dev @wrumsby/testcaseloader

Usage

import { TestCaseLoader } from 'testcaseloader';
import { someFunction } from './someFunction';

describe('someFunction', () => {
  // This will load testCases from ./testcases/someFunction
  // testCases are pairs of files named input-${n}.js and expected-${n}.js
  // e.g. input-0.js, expected-0.js, input-1.js, expected-1.js
  const testCases = new TestCaseLoader().load('someFunction');

  it('should work', () => {
    testCases.forEach(({ input, expected }) => {
      const actual = someFunction(input);

      expect(actual).toEqual(expected);
    });
  });
});