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245 lines
10 KiB
JavaScript
245 lines
10 KiB
JavaScript
// test subtract
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import assert from 'assert'
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import approx from '../../../../tools/approx'
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import math from '../../../../src/bundleAny'
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const bignumber = math.bignumber
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const subtract = math.subtract
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describe('subtract', function () {
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it('should subtract two numbers correctly', function () {
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assert.deepStrictEqual(subtract(4, 2), 2)
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assert.deepStrictEqual(subtract(4, -4), 8)
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assert.deepStrictEqual(subtract(-4, -4), 0)
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assert.deepStrictEqual(subtract(-4, 4), -8)
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assert.deepStrictEqual(subtract(2, 4), -2)
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assert.deepStrictEqual(subtract(3, 0), 3)
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assert.deepStrictEqual(subtract(0, 3), -3)
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assert.deepStrictEqual(subtract(0, 3), -3)
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assert.deepStrictEqual(subtract(0, 3), -3)
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})
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it('should subtract booleans', function () {
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assert.strictEqual(subtract(true, true), 0)
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assert.strictEqual(subtract(true, false), 1)
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assert.strictEqual(subtract(false, true), -1)
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assert.strictEqual(subtract(false, false), 0)
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})
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it('should subtract mixed numbers and booleans', function () {
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assert.strictEqual(subtract(2, true), 1)
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assert.strictEqual(subtract(2, false), 2)
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assert.strictEqual(subtract(true, 2), -1)
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assert.strictEqual(subtract(false, 2), -2)
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})
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it('should subtract bignumbers', function () {
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assert.deepStrictEqual(subtract(bignumber(0.3), bignumber(0.2)), bignumber(0.1))
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assert.deepStrictEqual(subtract(bignumber('2.3e5001'), bignumber('3e5000')), bignumber('2e5001'))
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assert.deepStrictEqual(subtract(bignumber('1e19'), bignumber('1')), bignumber('9999999999999999999'))
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})
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it('should subtract mixed numbers and bignumbers', function () {
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assert.deepStrictEqual(subtract(bignumber(0.3), 0.2), bignumber(0.1))
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assert.deepStrictEqual(subtract(0.3, bignumber(0.2)), bignumber(0.1))
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assert.throws(function () { subtract(1 / 3, bignumber(1).div(3)) }, /Cannot implicitly convert a number with >15 significant digits to BigNumber/)
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assert.throws(function () { subtract(bignumber(1).div(3), 1 / 3) }, /Cannot implicitly convert a number with >15 significant digits to BigNumber/)
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})
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it('should subtract mixed booleans and bignumbers', function () {
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assert.deepStrictEqual(subtract(bignumber(1.1), true), bignumber(0.1))
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assert.deepStrictEqual(subtract(bignumber(1.1), false), bignumber(1.1))
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assert.deepStrictEqual(subtract(false, bignumber(0.2)), bignumber(-0.2))
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assert.deepStrictEqual(subtract(true, bignumber(0.2)), bignumber(0.8))
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})
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it('should subtract two complex numbers correctly', function () {
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assert.deepStrictEqual(subtract(math.complex(3, 2), math.complex(8, 4)), math.complex('-5 - 2i'))
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assert.deepStrictEqual(subtract(math.complex(6, 3), math.complex(-2, -2)), math.complex('8 + 5i'))
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assert.deepStrictEqual(subtract(math.complex(3, 4), 10), math.complex('-7 + 4i'))
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assert.deepStrictEqual(subtract(math.complex(3, 4), -2), math.complex('5 + 4i'))
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assert.deepStrictEqual(subtract(math.complex(-3, -4), 10), math.complex('-13 - 4i'))
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assert.deepStrictEqual(subtract(10, math.complex(3, 4)), math.complex('7 - 4i'))
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assert.deepStrictEqual(subtract(10, math.i), math.complex('10 - i'))
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assert.deepStrictEqual(subtract(0, math.i), math.complex('-i'))
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assert.deepStrictEqual(subtract(10, math.complex(0, 1)), math.complex('10 - i'))
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})
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it('should throw an error for mixed complex numbers and big numbers', function () {
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assert.deepStrictEqual(subtract(math.complex(3, 4), math.bignumber(10)), math.complex(-7, 4))
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assert.deepStrictEqual(subtract(math.bignumber(10), math.complex(3, 4)), math.complex(7, -4))
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})
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it('should subtract two fractions', function () {
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const a = math.fraction(1, 3)
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assert.strictEqual(subtract(a, math.fraction(1, 6)).toString(), '0.1(6)')
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assert.strictEqual(a.toString(), '0.(3)')
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assert.strictEqual(subtract(math.fraction(3, 5), math.fraction(1, 5)).toString(), '0.4')
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assert.strictEqual(subtract(math.fraction(1), math.fraction(1, 3)).toString(), '0.(6)')
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})
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it('should subtract mixed fractions and numbers', function () {
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assert.deepStrictEqual(subtract(1, math.fraction(1, 3)), math.fraction(2, 3))
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assert.deepStrictEqual(subtract(math.fraction(1, 3), 1), math.fraction(-2, 3))
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})
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it('should subtract two quantities of the same unit', function () {
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approx.deepEqual(subtract(math.unit(5, 'km'), math.unit(100, 'mile')), math.unit(-155.93, 'km'))
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assert.deepStrictEqual(subtract(math.unit(math.bignumber(5), 'km'), math.unit(math.bignumber(2), 'km')), math.unit(math.bignumber(3), 'km'))
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assert.deepStrictEqual(subtract(math.unit(math.complex(10, 10), 'K'), math.unit(math.complex(3, 4), 'K')), math.unit(math.complex(7, 6), 'K'))
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assert.deepStrictEqual(subtract(math.unit(math.complex(10, 10), 'K'), math.unit(3, 'K')), math.unit(math.complex(7, 10), 'K'))
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})
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it('should throw an error if subtracting two quantities of different units', function () {
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assert.throws(function () {
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subtract(math.unit(5, 'km'), math.unit(100, 'gram'))
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})
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})
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it('should throw an error when one of the two units has undefined value', function () {
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assert.throws(function () {
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subtract(math.unit('km'), math.unit('5gram'))
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}, /Cannot subtract.*both units must have values/)
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assert.throws(function () {
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subtract(math.unit('5 km'), math.unit('gram'))
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}, /Cannot subtract.*both units must have values/)
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})
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it('should throw an error if subtracting numbers from units', function () {
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assert.throws(function () { subtract(math.unit(5, 'km'), 2) }, TypeError)
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assert.throws(function () { subtract(2, math.unit(5, 'km')) }, TypeError)
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})
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it('should throw an error if subtracting numbers from units', function () {
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assert.throws(function () { subtract(math.unit(5, 'km'), bignumber(2)) }, TypeError)
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assert.throws(function () { subtract(bignumber(2), math.unit(5, 'km')) }, TypeError)
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})
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it('should throw an error when used with a string', function () {
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assert.throws(function () { subtract('hello ', 'world') })
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assert.throws(function () { subtract('str', 123) })
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assert.throws(function () { subtract(123, 'str') })
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})
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describe('Array', function () {
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it('should subtract arrays correctly', function () {
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const a2 = [[10, 20], [30, 40]]
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const a3 = [[5, 6], [7, 8]]
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const a4 = subtract(a2, a3)
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assert.deepStrictEqual(a4, [[5, 14], [23, 32]])
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})
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it('should subtract a scalar and an array correctly', function () {
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assert.deepStrictEqual(subtract(2, [3, 4]), [-1, -2])
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assert.deepStrictEqual(subtract(2, [3, 0]), [-1, 2])
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assert.deepStrictEqual(subtract([3, 4], 2), [1, 2])
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assert.deepStrictEqual(subtract([3, 0], 2), [1, -2])
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})
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it('should subtract array and dense matrix correctly', function () {
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const a = [1, 2, 3]
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const b = math.matrix([3, 2, 1])
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const c = subtract(a, b)
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assert.ok(c instanceof math.Matrix)
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assert.deepStrictEqual(c, math.matrix([-2, 0, 2]))
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})
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it('should subtract array and dense matrix correctly', function () {
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const a = [[1, 2, 3], [4, 5, 6]]
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const b = math.sparse([[6, 5, 4], [3, 2, 1]])
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const c = subtract(a, b)
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assert.ok(c instanceof math.Matrix)
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assert.deepStrictEqual(c, math.matrix([[-5, -3, -1], [1, 3, 5]]))
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})
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})
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describe('DenseMatrix', function () {
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it('should subtract matrices correctly', function () {
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const a2 = math.matrix([[10, 20], [30, 40]])
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const a3 = math.matrix([[5, 6], [7, 8]])
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const a4 = subtract(a2, a3)
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assert.ok(a4 instanceof math.Matrix)
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assert.deepStrictEqual(a4.size(), [2, 2])
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assert.deepStrictEqual(a4.valueOf(), [[5, 14], [23, 32]])
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})
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it('should subtract a scalar and a matrix correctly', function () {
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assert.deepStrictEqual(subtract(2, math.matrix([3, 4])), math.matrix([-1, -2]))
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assert.deepStrictEqual(subtract(math.matrix([3, 4]), 2), math.matrix([1, 2]))
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})
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it('should subtract matrix and array correctly', function () {
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const a = math.matrix([1, 2, 3])
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const b = [3, 2, 1]
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const c = subtract(a, b)
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assert.ok(c instanceof math.Matrix)
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assert.deepStrictEqual(c, math.matrix([-2, 0, 2]))
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})
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it('should subtract dense and sparse matrices correctly', function () {
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const a = math.matrix([[1, 2, 3], [1, 0, 0]])
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const b = math.sparse([[3, 2, 1], [0, 0, 1]])
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const c = subtract(a, b)
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assert.ok(c instanceof math.Matrix)
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assert.deepStrictEqual(c, math.matrix([[-2, 0, 2], [1, 0, -1]]))
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})
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})
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describe('SparseMatrix', function () {
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it('should subtract matrices correctly', function () {
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const a2 = math.matrix([[10, 20], [30, 0]], 'sparse')
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const a3 = math.matrix([[5, 6], [30, 8]], 'sparse')
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const a4 = subtract(a2, a3)
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assert.ok(a4 instanceof math.Matrix)
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assert.deepStrictEqual(a4, math.sparse([[5, 14], [0, -8]]))
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})
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it('should subtract a scalar and a matrix correctly', function () {
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assert.deepStrictEqual(subtract(2, math.matrix([[3, 4], [5, 6]], 'sparse')).valueOf(), [[-1, -2], [-3, -4]])
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assert.deepStrictEqual(subtract(2, math.matrix([[3, 4], [0, 6]], 'sparse')).valueOf(), [[-1, -2], [2, -4]])
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assert.deepStrictEqual(subtract(math.matrix([[3, 4], [5, 6]], 'sparse'), 2).valueOf(), [[1, 2], [3, 4]])
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assert.deepStrictEqual(subtract(math.matrix([[3, 4], [0, 6]], 'sparse'), 2).valueOf(), [[1, 2], [-2, 4]])
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})
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it('should subtract matrix and array correctly', function () {
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const a = math.matrix([[1, 2, 3], [1, 0, 0]], 'sparse')
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const b = [[3, 2, 1], [0, 0, 1]]
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const c = subtract(a, b)
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assert.ok(c instanceof math.Matrix)
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assert.deepStrictEqual(c.valueOf(), [[-2, 0, 2], [1, 0, -1]])
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})
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it('should subtract sparse and dense matrices correctly', function () {
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const a = math.sparse([[1, 2, 3], [1, 0, 0]])
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const b = math.matrix([[3, 2, 1], [0, 0, 1]])
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const c = subtract(a, b)
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assert.ok(c instanceof math.Matrix)
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assert.deepStrictEqual(c, math.matrix([[-2, 0, 2], [1, 0, -1]]))
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})
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})
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it('should throw an error in case of invalid number of arguments', function () {
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assert.throws(function () { subtract(1) }, /TypeError: Too few arguments/)
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assert.throws(function () { subtract(1, 2, 3) }, /TypeError: Too many arguments/)
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})
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it('should throw an in case of wrong type of arguments', function () {
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assert.throws(function () { subtract(null, 2) }, /TypeError: Unexpected type of argument/)
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})
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it('should LaTeX subtract', function () {
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const expression = math.parse('subtract(2,1)')
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assert.strictEqual(expression.toTex(), '\\left(2-1\\right)')
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})
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})
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