mirror of
https://github.com/josdejong/mathjs.git
synced 2025-12-08 19:46:04 +00:00
6e96d5a808
Conflicts: HISTORY.md bower.json component.json dist/math.js dist/math.map dist/math.min.js lib/function/arithmetic/abs.js lib/function/probability/gamma.js lib/version.js package.json
84 lines
3.0 KiB
JavaScript
84 lines
3.0 KiB
JavaScript
// test abs
|
|
var assert = require('assert'),
|
|
math = require('../../../index'),
|
|
error = math.error;
|
|
|
|
describe('abs', function () {
|
|
it('should return the abs value of a boolean', function () {
|
|
assert.strictEqual(math.abs(true), 1);
|
|
assert.strictEqual(math.abs(false), 0);
|
|
});
|
|
|
|
it('should return the abs value of null', function () {
|
|
assert.strictEqual(math.abs(null), 0);
|
|
});
|
|
|
|
it('should return the abs value of a number', function () {
|
|
assert.strictEqual(math.abs(-4.2), 4.2);
|
|
assert.strictEqual(math.abs(-3.5), 3.5);
|
|
assert.strictEqual(math.abs(100), 100);
|
|
assert.strictEqual(math.abs(0), 0);
|
|
});
|
|
|
|
it('should return the absolute value of a big number', function () {
|
|
assert.deepEqual(math.abs(math.bignumber(-2.3)), math.bignumber(2.3));
|
|
assert.deepEqual(math.abs(math.bignumber('5e500')), math.bignumber('5e500'));
|
|
assert.deepEqual(math.abs(math.bignumber('-5e500')), math.bignumber('5e500'));
|
|
});
|
|
|
|
it('should return the absolute value of a complex number', function () {
|
|
assert.equal(math.abs(math.complex(3, -4)), 5);
|
|
assert.equal(math.abs(math.complex(1e200, -4e200)), 4.12310562561766e+200);
|
|
});
|
|
|
|
it('should return the absolute value of all elements in an Array', function () {
|
|
var a1 = math.abs([1,-2,3]);
|
|
assert.ok(Array.isArray(a1));
|
|
assert.deepEqual(a1, [1,2,3]);
|
|
a1 = math.abs([-2,-1,0,1,2]);
|
|
assert.ok(Array.isArray(a1));
|
|
assert.deepEqual(a1, [2,1,0,1,2]);
|
|
});
|
|
|
|
it('should return the absolute number of a complex number with zero', function () {
|
|
assert.equal(math.abs(math.complex(1, 0)), 1);
|
|
assert.equal(math.abs(math.complex(0, 1)), 1);
|
|
assert.equal(math.abs(math.complex(0, 0)), 0);
|
|
assert.equal(math.abs(math.complex(-1, 0)), 1);
|
|
assert.equal(math.abs(math.complex(0, -1)), 1);
|
|
});
|
|
|
|
it('should return the absolute value of all elements in a matrix', function () {
|
|
var a1 = math.abs(math.matrix([1,-2,3]));
|
|
assert.ok(a1 instanceof math.type.Matrix);
|
|
assert.deepEqual(a1.size(), [3]);
|
|
assert.deepEqual(a1.valueOf(), [1,2,3]);
|
|
a1 = math.abs(math.matrix([-2,-1,0,1,2]));
|
|
assert.ok(a1 instanceof math.type.Matrix);
|
|
assert.deepEqual(a1.size(), [5]);
|
|
assert.deepEqual(a1.valueOf(), [2,1,0,1,2])
|
|
});
|
|
|
|
it('should throw an error with a measurment unit', function () {
|
|
assert.throws(function () {
|
|
math.abs(math.unit(5, 'km'));
|
|
});
|
|
});
|
|
|
|
it('should throw an error in case of invalid number of arguments', function() {
|
|
assert.throws(function () {math.abs()}, /TypeError: Too few arguments/);
|
|
assert.throws(function () {math.abs(1, 2)}, /TypeError: Too many arguments/);
|
|
});
|
|
|
|
it('should throw an error in case of unsupported types', function () {
|
|
assert.throws(function () {math.abs('a string');}, /TypeError: Unexpected type of argument/);
|
|
assert.throws(function () {math.abs(undefined);}, /TypeError: Unexpected type of argument/);
|
|
});
|
|
|
|
it('should LaTeX abs', function () {
|
|
var expression = math.parse('abs(-1)');
|
|
assert.equal(expression.toTex(),'\\left|-1\\right|');
|
|
});
|
|
|
|
});
|