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remap.object.js
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remap.object.js
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/**
* -----------------------------------------------------------------------------
* VITALS UNIT TESTS: vitals.remap.object
* -----------------------------------------------------------------------------
* @section base
* @see [vitals.remap docs](https://github.com/imaginate/vitals/wiki/vitals.remap)
* @see [test api](https://github.com/imaginate/vitals/blob/master/test/setup/interface.js)
* @see [test helpers](https://github.com/imaginate/vitals/blob/master/test/setup/helpers.js)
*
* @author Adam Smith <adam@imaginate.life> (https://github.com/imaginate)
* @copyright 2017 Adam A Smith <adam@imaginate.life> (https://github.com/imaginate)
*
* Annotations:
* @see [JSDoc3](http://usejsdoc.org)
* @see [Closure Compiler JSDoc Syntax](https://developers.google.com/closure/compiler/docs/js-for-compiler)
*/
method('remap.object', 'remap.obj', function() {
should('make new object by iterating over all key => value pairs in source', function() {
test('<object>', '<iteratee>', function() {
var obj1 = { a: 1, b: 2, c: 3 };
var obj2 = vitals.remap.obj(obj1, function(val) {
return ++val;
});
assert( obj2 !== obj1 );
assert( obj2.a === 2 );
assert( obj2.b === 3 );
assert( obj2.c === 4 );
});
test('<object>', '<iteratee>', function() {
var obj1 = { a: 1, b: 2, c: 3 };
var obj2 = vitals.remap.obj(obj1, function(val, key) {
return key;
});
assert( obj2 !== obj1 );
assert( obj2.a === 'a' );
assert( obj2.b === 'b' );
assert( obj2.c === 'c' );
});
});
should('correctly clone the source', function() {
test('<object>', '<iteratee>', function() {
var obj = { a: 1, b: 2, c: 3 };
vitals.remap.obj(obj, function(val, key, src) {
assert( obj !== src )
});
});
});
should('correctly bind the iteratee', function() {
test('<object>', '<iteratee>', '<this>', function() {
var obj = { a: 1, b: 2, c: 3 };
var self = {};
vitals.remap.obj(obj, function(val, key) {
this[key] = val;
}, self);
assert( self !== obj );
assert( self.a === 1 );
assert( self.b === 2 );
assert( self.c === 3 );
});
});
should('throw an error', function() {
test(function() {
assert.throws(function() {
vitals.remap.obj();
}, validTypeErr);
});
test({}, function() {
assert.throws(function() {
vitals.remap.obj({});
}, validTypeErr);
});
test(null, '<iteratee>', function() {
assert.throws(function() {
vitals.remap.obj(null, function(){});
}, validTypeErr);
});
test({}, '<iteratee>', 'fail', function() {
assert.throws(function() {
vitals.remap.obj({}, function(){}, 'fail');
}, validTypeErr);
});
});
});