text: import assert from 'assert'
  import math from '../../../src/entry/bundleAny'
  
  const sum = math.sum
  
  describe('apply', function () {
    it('should apply a function to the rows of a matrix', function () {
      assert.deepStrictEqual(math.apply([[1, 2], [3, 4]], 0, sum), [4, 6])
    })
  
    it('should apply a function to the columns of a matrix', function () {
      assert.deepStrictEqual(math.apply([[1, 2], [3, 4]], 1, sum), [3, 7])
    })
  
    const inputMatrix = [ // this is a 4x3x2 matrix, full test coverage
      [ [1, 2], [3, 4], [5, 6] ],
      [ [7, 8], [9, 10], [11, 12] ],
      [ [13, 14], [15, 16], [17, 18] ],
      [ [19, 20], [21, 22], [23, 24] ]
    ]
    it('should apply to the rows of a tensor', function () {
      assert.deepStrictEqual(math.apply(inputMatrix, 2, sum), [[3, 7, 11], [15, 19, 23], [27, 31, 35], [39, 43, 47]])
    })
  
    it('should throw an error if the dimension is out of range', function () {
      assert.throws(function () { math.apply([[1, 2], [3, 4]], 3, sum) }, /Index out of range/)
    })
  
    it('should throw an error if the dimension is not an integer', function () {
      assert.throws(function () { math.apply([[1, 2], [3, 4]], [1, 2], sum) }, /Unexpected type of argument in function apply/)
    })
  
    it('should throw an error if the matrix, is not a matrix or array', function () {
      assert.throws(function () { math.apply('[[1, 2], [3, 4]]', 0, sum) }, /Unexpected type of argument in function apply/)
    })
  })
  