mirror of
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179 lines
8.3 KiB
JavaScript
179 lines
8.3 KiB
JavaScript
// test leftShift
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var assert = require('assert'),
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math = require('../../../index'),
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matrix = math.matrix,
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sparse = math.sparse,
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bignumber = math.bignumber,
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leftShift = math.leftShift;
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describe('leftShift', function () {
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it('should left shift a number by a given amount', function () {
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assert.equal(leftShift(0, 1000), 0);
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assert.equal(leftShift(2, 0), 2);
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assert.equal(leftShift(2, 3), 16);
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assert.equal(leftShift(2, 4), 32);
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assert.equal(leftShift(-2, 2), -8);
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assert.equal(leftShift(3, 3), 24);
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assert.equal(leftShift(-3, 2), -12);
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assert.equal(leftShift(-3, 3), -24);
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});
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it('should left shift booleans by a boolean amount', function () {
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assert.equal(leftShift(true, true), 2);
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assert.equal(leftShift(true, false), 1);
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assert.equal(leftShift(false, true), 0);
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assert.equal(leftShift(false, false), 0);
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});
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it('should left shift with a mix of numbers and booleans', function () {
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assert.equal(leftShift(2, true), 4);
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assert.equal(leftShift(2, false), 2);
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assert.equal(leftShift(true, 2), 4);
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assert.equal(leftShift(false, 2), 0);
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});
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it('should left shift bignumbers', function () {
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assert.deepEqual(leftShift(bignumber(2), bignumber(3)), bignumber(16));
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assert.deepEqual(leftShift(bignumber(500), bignumber(100)), bignumber('633825300114114700748351602688000'));
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assert.deepEqual(leftShift(bignumber(-1), bignumber(2)), bignumber(-4));
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assert.equal(leftShift(bignumber(0), bignumber(-2)).isNaN(), true);
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assert.deepEqual(leftShift(bignumber(Infinity), bignumber(2)).toString(), 'Infinity');
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assert.equal(leftShift(bignumber(Infinity), bignumber(Infinity)).isNaN(), true);
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});
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it('should left shift mixed numbers and bignumbers', function () {
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assert.deepEqual(leftShift(bignumber(2), 3), bignumber(16));
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assert.deepEqual(leftShift(bignumber(500), 100), bignumber('633825300114114700748351602688000'));
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assert.deepEqual(leftShift(2, bignumber(3)), bignumber(16));
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assert.deepEqual(leftShift(-1, bignumber(2)), bignumber(-4));
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assert.deepEqual(leftShift(bignumber(-1), 2), bignumber(-4));
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assert.equal(leftShift(bignumber(0), -2).isNaN(), true);
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assert.equal(leftShift(bignumber(Infinity), Infinity).isNaN(), true);
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});
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it('should left shift mixed booleans and bignumbers', function () {
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assert.deepEqual(leftShift(true, bignumber(3)), bignumber(8));
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assert.deepEqual(leftShift(false, bignumber(3)), bignumber(0));
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assert.deepEqual(leftShift(bignumber(3), false), bignumber(3));
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assert.deepEqual(leftShift(bignumber(3), true), bignumber(6));
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});
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it('should throw an error if used with a unit', function() {
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assert.throws(function () {leftShift(math.unit('5cm'), 2);}, /TypeError: Unexpected type of argument/);
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assert.throws(function () {leftShift(2, math.unit('5cm'));}, /TypeError: Unexpected type of argument/);
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assert.throws(function () {leftShift(math.unit('2cm'), math.unit('5cm'));}, /TypeError: Unexpected type of argument/);
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});
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it('should throw an error if the parameters are not integers', function () {
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assert.throws(function () {
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leftShift(1.1, 1);
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}, /Integers expected in function leftShift/);
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assert.throws(function () {
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leftShift(1, 1.1);
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}, /Integers expected in function leftShift/);
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assert.throws(function () {
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leftShift(1.1, 1.1);
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}, /Integers expected in function leftShift/);
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assert.throws(function () {
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leftShift(bignumber(1.1), 1);
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}, /Integers expected in function leftShift/);
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assert.throws(function () {
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leftShift(1, bignumber(1.1));
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}, /Integers expected in function leftShift/);
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assert.throws(function () {
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leftShift(bignumber(1.1), bignumber(1));
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}, /Integers expected in function leftShift/);
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assert.throws(function () {
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leftShift(bignumber(1), bignumber(1.1));
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}, /Integers expected in function leftShift/);
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});
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describe('Array', function () {
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it('should left shift array and scalar', function () {
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assert.deepEqual(leftShift([[1, 2], [8, 0]], 2), [[4, 8], [32, 0]]);
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assert.deepEqual(leftShift(2, [[1, 2], [8, 0]]), [[4, 8], [512, 2]]);
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});
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it('should left shift array - array', function () {
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assert.deepEqual(leftShift([[1, 2], [8, 0]], [[4, 8], [32, 0]]), [[16, 512], [8, 0]]);
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assert.deepEqual(leftShift([[4, 8], [32, 0]], [[1, 2], [8, 0]]), [[8, 32], [8192, 0]]);
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});
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it('should left shift array - dense matrix', function () {
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assert.deepEqual(leftShift([[1, 2], [8, 0]], matrix([[4, 8], [32, 0]])), matrix([[16, 512], [8, 0]]));
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assert.deepEqual(leftShift([[4, 8], [32, 0]], matrix([[1, 2], [8, 0]])), matrix([[8, 32], [8192, 0]]));
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});
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it('should left shift array - sparse matrix', function () {
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assert.deepEqual(leftShift([[1, 2], [8, 0]], sparse([[4, 8], [32, 0]])), matrix([[16, 512], [8, 0]]));
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assert.deepEqual(leftShift([[4, 8], [32, 0]], sparse([[1, 2], [8, 0]])), matrix([[8, 32], [8192, 0]]));
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});
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});
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describe('DenseMatrix', function () {
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it('should left shift dense matrix and scalar', function () {
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assert.deepEqual(leftShift(matrix([[1, 2], [8, 0]]), 2), matrix([[4, 8], [32, 0]]));
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assert.deepEqual(leftShift(2, matrix([[1, 2], [8, 0]])), matrix([[4, 8], [512, 2]]));
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});
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it('should left shift dense matrix - array', function () {
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assert.deepEqual(leftShift(matrix([[1, 2], [8, 0]]), [[4, 8], [32, 0]]), matrix([[16, 512], [8, 0]]));
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assert.deepEqual(leftShift(matrix([[4, 8], [32, 0]]), [[1, 2], [8, 0]]), matrix([[8, 32], [8192, 0]]));
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});
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it('should left shift dense matrix - dense matrix', function () {
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assert.deepEqual(leftShift(matrix([[1, 2], [8, 0]]), matrix([[4, 8], [32, 0]])), matrix([[16, 512], [8, 0]]));
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assert.deepEqual(leftShift(matrix([[4, 8], [32, 0]]), matrix([[1, 2], [8, 0]])), matrix([[8, 32], [8192, 0]]));
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});
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it('should left shift dense matrix - sparse matrix', function () {
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assert.deepEqual(leftShift(matrix([[1, 2], [8, 0]]), sparse([[4, 8], [32, 0]])), matrix([[16, 512], [8, 0]]));
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assert.deepEqual(leftShift(matrix([[4, 8], [32, 0]]), sparse([[1, 2], [8, 0]])), matrix([[8, 32], [8192, 0]]));
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});
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});
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describe('SparseMatrix', function () {
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it('should left shift sparse matrix and scalar', function () {
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assert.deepEqual(leftShift(sparse([[1, 2], [8, 0]]), 2), sparse([[4, 8], [32, 0]]));
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assert.deepEqual(leftShift(2, sparse([[1, 2], [8, 0]])), matrix([[4, 8], [512, 2]]));
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});
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it('should left shift sparse matrix - array', function () {
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assert.deepEqual(leftShift(sparse([[1, 2], [8, 0]]), [[4, 8], [32, 0]]), sparse([[16, 512], [8, 0]]));
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assert.deepEqual(leftShift(sparse([[4, 8], [32, 0]]), [[1, 2], [8, 0]]), sparse([[8, 32], [8192, 0]]));
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});
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it('should left shift sparse matrix - dense matrix', function () {
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assert.deepEqual(leftShift(sparse([[1, 2], [8, 0]]), matrix([[4, 8], [32, 0]])), sparse([[16, 512], [8, 0]]));
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assert.deepEqual(leftShift(sparse([[4, 8], [32, 0]]), matrix([[1, 2], [8, 0]])), sparse([[8, 32], [8192, 0]]));
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});
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it('should left shift sparse matrix - sparse matrix', function () {
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assert.deepEqual(leftShift(sparse([[1, 2], [8, 0]]), sparse([[4, 8], [32, 0]])), sparse([[16, 512], [8, 0]]));
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assert.deepEqual(leftShift(sparse([[4, 8], [32, 0]]), sparse([[1, 2], [8, 0]])), sparse([[8, 32], [8192, 0]]));
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});
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});
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it('should throw an error if used with wrong number of arguments', function () {
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assert.throws(function () {leftShift(1);}, /TypeError: Too few arguments/);
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assert.throws(function () {leftShift(1, 2, 3);}, /TypeError: Too many arguments/);
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});
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it('should throw an error in case of invalid type of arguments', function () {
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assert.throws(function () {leftShift(new Date(), true);}, /TypeError: Unexpected type of argument/);
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assert.throws(function () {leftShift(2, null);}, /TypeError: Unexpected type of argument/);
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assert.throws(function () {leftShift(true, new Date());}, /TypeError: Unexpected type of argument/);
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assert.throws(function () {leftShift(true, undefined);}, /TypeError: Unexpected type of argument/);
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assert.throws(function () {leftShift(undefined, true);}, /TypeError: Unexpected type of argument/);
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});
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it('should LaTeX leftShift', function () {
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var expression = math.parse('leftShift(2,3)');
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assert.equal(expression.toTex(), '\\left(2<<3\\right)');
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});
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});
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