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

var range = require('../../packages/array-range');

test('array range with one integer argument', function(t) {

t.plan(2);

var stop = 5;

var negativeStop = -5;

t.deepEqual(range(stop), [0, 1, 2, 3, 4]);

t.deepEqual(range(negativeStop), [0, -1, -2, -3, -4]);

t.end();

});

test('array range with two integer arguments', function(t) {

t.plan(2);

var start = 0;

var stop = 5;

var negativeStop = -5;

t.deepEqual(range(start, stop), [0, 1, 2, 3, 4]);

t.deepEqual(range(start, negativeStop), [0, -1, -2, -3, -4]);

t.end();

});

test('array range with three integer arguments', function(t) {

t.plan(2);

var start = 0;

var stop = 20;

var negativeStop = -20;

var step = 5;

var negativeStep = -5;

t.deepEqual(range(start, stop, step), [0, 5, 10, 15]);

t.deepEqual(range(start, negativeStop, negativeStep), [0, -5, -10, -15]);

t.end();

});

test('array range with three decimal arguments', function(t) {

t.plan(2);

var start = 0;

var stop = 1.9;

var negativeStop = -1.9;

var step = 0.5;

var negativeStep = -0.5;

t.deepEqual(range(start, stop, step), [0, 0.5, 1, 1.5]);

t.deepEqual(range(start, negativeStop, negativeStep), [0, -0.5, -1, -1.5]);

t.end();

});

test('throws if any argument is not null/undefined or number', function(t) {

t.plan(3);

t.throws(function() {

range('0', 3);

});

t.throws(function() {

range(0, '3');

});

t.throws(function() {

range(0, 3, '1');

});

t.end();

});