// test setSymDifference
const assert = require('assert')
const math = require('../../../src/main')

describe('setSymDifference', function () {
  it('should return the symetric difference of two sets', function () {
    assert.deepStrictEqual(math.setSymDifference([1, 2, 3], [3, 4]), [1, 2, 4])
    assert.deepStrictEqual(math.setSymDifference([3, 4], [1, 2, 3]), [4, 1, 2])
    assert.deepStrictEqual(math.setSymDifference([1, 2], [1, 2, 3, 4]), [3, 4])
    assert.deepStrictEqual(math.setSymDifference([], [3, 4]), [3, 4])
    assert.deepStrictEqual(math.setSymDifference([], []), [])
  })

  it('should return the symetric difference of two multisets', function () {
    assert.deepStrictEqual(math.setSymDifference([1, 1, 2, 3, 4, 4], [1, 2, 3, 4, 4, 4]), [1, 4])
  })

  it('should return the same type of output as the inputs', function () {
    assert.strictEqual(math.typeof(math.setSymDifference([1, 2, 3], [3, 4, 5])), 'Array')
    assert.strictEqual(math.typeof(math.setSymDifference(math.matrix([1, 2, 3]), math.matrix([3, 4, 5]))), 'Matrix')
  })

  it('should throw an error in case of invalid number of arguments', function () {
    assert.throws(function () { math.setSymDifference() }, /TypeError: Too few arguments/)
    assert.throws(function () { math.setSymDifference([], [], []) }, /TypeError: Too many arguments/)
  })
})
