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

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

test('non empty arrays return all but head', function(t) {

t.plan(4);

var testArrays = [

[1, 2, 3, 4, 5],

[[1, 2, 3], [4, 5, 6], [7, 8, 9]],

[{a: 1}, {b: 2}, {c: 3}, {d: 4}],

['a', 1, true, /r/g],

];

testArrays.forEach(function(arr) {

t.deepEqual(tail(arr), arr.slice(1));

});

t.end();

});

test('empty arrays return an empty array', function(t) {

t.plan(1);

t.deepEqual(tail([]), []);

t.end();

});

test('non-array arguments throw', function(t) {

t.plan(4);

t.throws(function() {

tail({});

});

t.throws(function() {

tail(undefined);

});

t.throws(function() {

tail(null);

});

t.throws(function() {

tail();

});

t.end();

});