// test deepEqual
const assert = require('assert')
const math = require('../../../src/main')
const bignumber = math.bignumber
const complex = math.complex
const matrix = math.matrix
const deepEqual = math.deepEqual

describe('deepEqual', function () {
  it('should compare scalars correctly', function () {
    assert.strictEqual(deepEqual(2, 3), false)
    assert.strictEqual(deepEqual(2, 2), true)
    assert.strictEqual(deepEqual(0, 0), true)
    assert.strictEqual(deepEqual(-2, 2), false)
    assert.strictEqual(deepEqual(2, math.bignumber(2)), true)
    assert.strictEqual(deepEqual(math.fraction(1, 2), 0.5), true)
    assert.strictEqual(deepEqual(true, 1), true)
  })

  it('should compare two matrices', function () {
    assert.deepStrictEqual(deepEqual([1, 4, 5], [3, 4, 5]), false)
    assert.deepStrictEqual(deepEqual([1, 4, 5], [1, 4, 5]), true)
    assert.deepStrictEqual(deepEqual([1, 4, 5], [1, 4]), false)
    assert.deepStrictEqual(deepEqual([1, 4], [1, 4, 5]), false)
    assert.deepStrictEqual(deepEqual([1, 4, 5], matrix([3, 4, 5])), false)
    assert.deepStrictEqual(deepEqual([1, 4, 5], matrix([1, 4, 5])), true)
    assert.deepStrictEqual(deepEqual(matrix([1, 4, 5]), matrix([1, 4, 5])), true)

    assert.deepStrictEqual(deepEqual(matrix([[1, 2], [3, 4]]), matrix([[1, 2], [3, 4]])), true)
    assert.deepStrictEqual(deepEqual(matrix([[1, 2], [3, 4]]), matrix([[1, 2], [3, 5]])), false)
    assert.deepStrictEqual(deepEqual(matrix([[1, 2], [3, 4]]), matrix([[1, 2], [3, 4], [5, 6]])), false)
    assert.deepStrictEqual(deepEqual(matrix([[1, 2], [3, 4], [5, 6]]), matrix([[1, 2], [3, 4]])), false)
  })

  it('should compare mixed scalars and matrices', function () {
    assert.deepStrictEqual(deepEqual([1, 2, 3], 2), false)
    assert.deepStrictEqual(deepEqual(2, [1, 2, 3]), false)
    assert.deepStrictEqual(deepEqual(matrix([1, 2, 3]), 2), false)
    assert.deepStrictEqual(deepEqual(2, matrix([1, 2, 3])), false)
  })

  it('should compare two matrices with mixed types', function () {
    assert.deepStrictEqual(deepEqual([1, 4], [true, 4]), true)
    assert.deepStrictEqual(deepEqual([1, 4], [1, '4']), true)
    assert.deepStrictEqual(deepEqual([2, 3], [2, bignumber(3)]), true)
    assert.deepStrictEqual(deepEqual([2, 3], [2, bignumber(4)]), false)
    assert.deepStrictEqual(deepEqual([complex(2, 3), 3], [complex(2, 3), 3]), true)
    assert.deepStrictEqual(deepEqual([complex(2, 3), 3], [complex(2, 4), 3]), false)
  })

  it('should throw an error in case of invalid number of arguments', function () {
    assert.throws(function () { deepEqual(1) }, /TypeError: Too few arguments/)
    assert.throws(function () { deepEqual(1, 2, 3) }, /TypeError: Too many arguments/)
  })

  it('should throw an error in case of invalid type of arguments', function () {
    assert.throws(function () { deepEqual(['A'], ['B']) }, /Error: Cannot convert "A" to a number/)
  })

  it('should LaTeX deepEqual', function () {
    const expression = math.parse('deepEqual([1,2],[1,3])')
    assert.strictEqual(expression.toTex(), '\\mathrm{deepEqual}\\left(\\begin{bmatrix}1\\\\2\\\\\\end{bmatrix},\\begin{bmatrix}1\\\\3\\\\\\end{bmatrix}\\right)')
  })
})
