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