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

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

test('returns elements unique to first array', function(t) {

t.plan(4);

var arr1 = [1, 2, 3, 4, 5, 6];

var arr2 = [1, 3, 6];

t.deepEqual(remove(arr1, arr2), [2, 4, 5]);

arr1 = ['a', 'b', 'c', 'd'];

arr2 = ['c', 'd'];

t.deepEqual(remove(arr1, arr2), ['a', 'b']);

arr1 = [1, 2, 3, 4, 5, 6];

arr2 = [];

t.deepEqual(remove(arr1, arr2), [1, 2, 3, 4, 5, 6]);

arr1 = [];

arr2 = [1, 2, 3, 4, 5, 6];

t.deepEqual(remove(arr1, arr2), []);

t.end();

});

test("throws if first two arguments aren't arrays", function(t) {

t.plan(8);

var arr1 = [1, 2, 3, 4, 5];

var arr2 = [6, 7, 8, 9, 10];

t.throws(function() {

remove(undefined, arr2);

});

t.throws(function() {

remove(null, arr2);

});

t.throws(function() {

remove({}, arr2);

});

t.throws(function() {

remove('a', arr2);

});

t.throws(function() {

remove(arr1, undefined);

});

t.throws(function() {

remove(arr1, null);

});

t.throws(function() {

remove(arr1, {});

});

t.throws(function() {

remove(arr1, 'a');

});

t.end();

});