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100 lines
3.8 KiB
JavaScript
100 lines
3.8 KiB
JavaScript
// test smaller
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var assert = require('assert'),
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math = require('../../../index')(),
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bignumber = math.bignumber,
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complex = math.complex,
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matrix = math.matrix,
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unit = math.unit,
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smaller = math.smaller;
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describe('smaller', function() {
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it('should compare two numbers correctly', function() {
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assert.equal(smaller(2, 3), true);
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assert.equal(smaller(2, 2), false);
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assert.equal(smaller(2, 1), false);
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assert.equal(smaller(0, 0), false);
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assert.equal(smaller(-2, 2), true);
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assert.equal(smaller(-2, -3), false);
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assert.equal(smaller(-3, -2), true);
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});
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it('should compare two booleans', function() {
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assert.equal(smaller(true, true), false);
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assert.equal(smaller(true, false), false);
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assert.equal(smaller(false, true), true);
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assert.equal(smaller(false, false), false);
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});
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it('should compare mixed numbers and booleans', function() {
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assert.equal(smaller(2, true), false);
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assert.equal(smaller(1, true), false);
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assert.equal(smaller(0, true), true);
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assert.equal(smaller(true, 2), true);
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assert.equal(smaller(true, 1), false);
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assert.equal(smaller(false, 2), true);
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});
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it('should compare bignumbers', function() {
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assert.deepEqual(smaller(bignumber(2), bignumber(3)), true);
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assert.deepEqual(smaller(bignumber(2), bignumber(2)), false);
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assert.deepEqual(smaller(bignumber(3), bignumber(2)), false);
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assert.deepEqual(smaller(bignumber(0), bignumber(0)), false);
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assert.deepEqual(smaller(bignumber(-2), bignumber(2)), true);
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});
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it('should compare mixed numbers and bignumbers', function() {
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assert.deepEqual(smaller(bignumber(2), 3), true);
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assert.deepEqual(smaller(2, bignumber(2)), false);
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assert.equal(smaller(1/3, bignumber(1).div(3)), false);
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assert.equal(smaller(bignumber(1).div(3), 1/3), false);
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});
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it('should compare mixed booleans and bignumbers', function() {
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assert.deepEqual(smaller(bignumber(0.1), true), true);
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assert.deepEqual(smaller(bignumber(1), true), false);
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assert.deepEqual(smaller(false, bignumber(0)), false);
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});
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it('should compare two measures of the same unit correctly', function() {
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assert.equal(smaller(unit('100cm'), unit('10inch')), false);
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assert.equal(smaller(unit('99cm'), unit('1m')), true);
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//assert.equal(smaller(unit('100cm'), unit('1m')), false); // dangerous, round-off errors
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assert.equal(smaller(unit('101cm'), unit('1m')), false);
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});
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it('should throw an error if comparing a unit and a number', function() {
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assert.throws(function () {smaller(unit('100cm'), 22)});
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});
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it('should throw an error if comparing a unit and a bignumber', function() {
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assert.throws(function () {smaller(unit('100cm'), bignumber(22))});
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});
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it('should perform lexical comparison on two strings', function() {
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assert.equal(smaller('0', 0), false);
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assert.equal(smaller('abd', 'abc'), false);
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assert.equal(smaller('abc', 'abc'), false);
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assert.equal(smaller('abc', 'abd'), true);
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});
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it('should perform element-wise comparison on two matrices of same size', function() {
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assert.deepEqual(smaller([1,4,6], [3,4,5]), [true, false, false]);
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assert.deepEqual(smaller([1,4,6], matrix([3,4,5])), matrix([true, false, false]));
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});
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it('should throw an error when comparing complex numbers', function() {
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assert.throws(function () {smaller(complex(1,1), complex(1,2))}, TypeError);
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assert.throws(function () {smaller(complex(2,1), 3)}, TypeError);
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assert.throws(function () {smaller(3, complex(2,4))}, TypeError);
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assert.throws(function () {smaller(math.bignumber(3), complex(2,4))}, TypeError);
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assert.throws(function () {smaller(complex(2,4), math.bignumber(3))}, TypeError);
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});
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it('should throw an error with two matrices of different sizes', function () {
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assert.throws(function () {smaller([1,4,6], [3,4])});
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});
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});
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