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

var pick = require('../../packages/object-pick');

var compare = require('../../packages/collection-compare');

// var obj = {a: 3, b: 5, c: 9};

// pick(obj, a, c); // {a: 3, c: 9}

//

// var obj = {a: 3, b: 5, c: 9};

// pick(obj, ['a', 'b', 'd']); // {a: 3, b: 5, d: undefined}

//

// var obj = {a: 3, b: 5, c: 9};

// pick(obj, ['a', 'a']); // {a: 3}

test('pick returns new object', function(t) {

t.plan(1);

var obj = {a: 3, b: 5, c: 9};

t.ok(pick(obj, []) !== obj);

t.end();

});

test('pick using array', function(t) {

t.plan(1);

var obj = {a: 3, b: 5, c: 9};

t.ok(compare(pick(obj, ['a', 'c']), {a: 3, c: 9}));

t.end();

});

test('pick using arguments', function(t) {

t.plan(1);

var obj = {a: 3, b: 5, c: 9};

t.ok(compare(pick(obj, 'a', 'c'), {a: 3, c: 9}));

t.end();

});

test('pick using a non-existent key', function(t) {

t.plan(1);

var obj = {a: 3, b: 5, c: 9};

t.ok(compare(pick(obj, ['a', 'b', 'd']), {a: 3, b: 5}));

t.end();

});

test('pick using a duplicate key', function(t) {

t.plan(1);

var obj = {a: 3, b: 5, c: 9};

t.ok(compare(pick(obj, ['a', 'a']), {a: 3}));

t.end();

});

test('pick where obj has a function value', function(t) {

t.plan(1);

var fn = function() {

return true;

};

var obj = {

a: 3,

b: fn,

};

t.ok(

compare(pick(obj, 'b'), {

b: fn,

})

);

t.end();

});