import {coerceArray} from './array';

describe('coerceArray', () => {

  it('should wrap a string in an array', () => {
    let stringVal = 'just a string';
    expect(coerceArray(stringVal)).toEqual([stringVal]);
  });

  it('should wrap a number in an array', () => {
    let numberVal = 42;
    expect(coerceArray(numberVal)).toEqual([numberVal]);
  });

  it('should wrap an object in an array', () => {
    let objectVal = { something: 'clever' };
    expect(coerceArray(objectVal)).toEqual([objectVal]);
  });

  it('should wrap a null vall in an array', () => {
    let nullVal = null;
    expect(coerceArray(nullVal)).toEqual([nullVal]);
  });

  it('should wrap an undefined value in an array', () => {
    let undefinedVal = undefined;
    expect(coerceArray(undefinedVal)).toEqual([undefinedVal]);
  });

  it('should not wrap an array in an array', () => {
    let arrayVal = [1, 2, 3];
    expect(coerceArray(arrayVal)).toBe(arrayVal);
  });

});