var test = require('../util/test')(__filename);

var clamp = require('../../packages/number-clamp');

/*

var n = 5;

clamp(1, n, 12); // 5

clamp(12, n, 3); // 3

clamp(8.2, n, 9,4); // 8.2

clamp(0, n, 0); // 0

var n = -2;

clamp(1, n, 12); // 1

clamp(-4, n, -7); // -4

clamp(NaN, n, 8); // NaN

clamp(3, n, NaN); // NaN

clamp(3, NaN, 8); // NaN

clamp(undefined, n, 8); // throws

clamp(3, n, 'h'); // throws

clamp(12, false, 8); // throws

*/

test('positive numbers are limited by range', function(t) {

t.plan(4);

var n = 5;

t.equal(clamp(1, n, 12), 5);

t.equal(clamp(3, n, 1), 3);

t.equal(clamp(8.2, n, 9), 8.2);

t.equal(clamp(0, n, 0), 0);

t.end();

});

test('negative numbers are limited by range', function(t) {

t.plan(2);

var n = -5;

t.equal(clamp(1, n, 12), 1);

t.equal(clamp(-6.5, n, -8), -6.5);

t.end();

});

test('Returns NaN if any argument is NaN', function(t) {

t.plan(3);

var n = 3;

t.ok(isNaN(clamp(NaN, n, 8)));

t.ok(isNaN(clamp(3, n, NaN)));

t.ok(isNaN(clamp(3, NaN, 8)));

t.end();

});

test('Throws if any argument is not a number', function(t) {

t.plan(3);

var n = -4;

t.throws(function() {

clamp(undefined, n, 8);

});

t.throws(function() {

clamp(3, n, 'h');

});

t.throws(function() {

clamp(3, false, 8);

});

t.end();

});