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test.js
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'use strict';
require('mocha');
var should = require('should');
var get = require('get-value');
var arraySort = require('./');
describe('errors', function() {
it('should throw an error when invalid args are passed:', function() {
(function() {
arraySort({});
}).should.throw('array-sort expects an array.');
});
});
describe('empty array', function() {
it('should return an empty array when null or undefined is passed', function() {
arraySort().should.eql([]);
arraySort(undefined).should.eql([]);
arraySort(null).should.eql([]);
})
});
describe('basic sort', function() {
it('should sort an array of primitives', function() {
var arr = ['d', 3, 'b', 'a', 'd', 1, 0, 'z'];
arraySort(arr).should.eql([ 0, 1, 3, 'a', 'b', 'd', 'd', 'z' ]);
})
});
describe('arraySort', function() {
var posts = [
{ path: 'a.md', locals: { date: '2014-01-09' } },
{ path: 'f.md', locals: { date: '2014-01-02' } },
{ path: 'd.md', locals: { date: '2013-05-06' } },
{ path: 'e.md', locals: { date: '2015-01-02' } },
{ path: 'b.md', locals: { date: '2012-01-02' } },
{ path: 'f.md', locals: { date: '2014-06-01' } },
{ path: 'c.md', locals: { date: '2015-04-12' } },
{ path: 'g.md', locals: { date: '2014-02-02' } },
];
it('should sort by a property:', function() {
var arr = [{key: 'y'}, {key: 'z'}, {key: 'x'}];
arraySort(arr, 'key').should.eql([
{key: 'x'},
{key: 'y'},
{key: 'z'}
]);
arraySort(posts, 'path').should.eql([
{ path: 'a.md', locals: { date: '2014-01-09' } },
{ path: 'b.md', locals: { date: '2012-01-02' } },
{ path: 'c.md', locals: { date: '2015-04-12' } },
{ path: 'd.md', locals: { date: '2013-05-06' } },
{ path: 'e.md', locals: { date: '2015-01-02' } },
{ path: 'f.md', locals: { date: '2014-01-02' } },
{ path: 'f.md', locals: { date: '2014-06-01' } },
{ path: 'g.md', locals: { date: '2014-02-02' } }
]);
});
it('should sort by a property with null values:', function() {
var arr = [{key: null}, {key: 'z'}, {key: 'x'}];
arraySort(arr, 'key').should.eql([
{key: 'x'},
{key: 'z'},
{key: null}
]);
});
it('should sort by a property with undefined values:', function() {
var arr = [{}, {key: 'z'}, {key: 'x'}];
arraySort(arr, 'key').should.eql([
{key: 'x'},
{key: 'z'},
{}
]);
});
it('should sort by a property with null and undefined values:', function() {
var arr = [{key: null}, {key: 'z'}, {}, {key: 'x'}];
arraySort(arr, 'key').should.eql([
{key: 'x'},
{key: 'z'},
{key: null},
{}
]);
});
it('should sort by a nested property:', function() {
var res = arraySort(posts, 'locals.date');
res.should.eql([
{ path: 'b.md', locals: { date: '2012-01-02' } },
{ path: 'd.md', locals: { date: '2013-05-06' } },
{ path: 'f.md', locals: { date: '2014-01-02' } },
{ path: 'a.md', locals: { date: '2014-01-09' } },
{ path: 'g.md', locals: { date: '2014-02-02' } },
{ path: 'f.md', locals: { date: '2014-06-01' } },
{ path: 'e.md', locals: { date: '2015-01-02' } },
{ path: 'c.md', locals: { date: '2015-04-12' } }
]);
});
it('should do nothing when the specified property is not a string:', function() {
var arr = [
{a: {b: {c: 'c'}}},
{a: {b: {z: 'z'}}},
{a: {b: {u: 'u'}}},
{a: {b: {y: 'y'}}}
];
arraySort(arr, 'a.b').should.eql([
{a: {b: {c: 'c'}}},
{a: {b: {z: 'z'}}},
{a: {b: {u: 'u'}}},
{a: {b: {y: 'y'}}}
]);
});
it('should sort by multiple properties:', function() {
var posts = [
{ foo: 'bbb', locals: { date: '2013-05-06' } },
{ foo: 'aaa', locals: { date: '2012-01-02' } },
{ foo: 'ddd', locals: { date: '2015-04-12' } },
{ foo: 'ccc', locals: { date: '2014-01-02' } },
{ foo: 'ccc', locals: { date: '2015-01-02' } },
{ foo: 'ddd', locals: { date: '2014-01-09' } },
{ foo: 'bbb', locals: { date: '2014-06-01' } },
{ foo: 'aaa', locals: { date: '2014-02-02' } },
];
var actual = arraySort(posts, ['foo', 'locals.date']);
actual.should.eql([
{ foo: 'aaa', locals: { date: '2012-01-02' } },
{ foo: 'aaa', locals: { date: '2014-02-02' } },
{ foo: 'bbb', locals: { date: '2013-05-06' } },
{ foo: 'bbb', locals: { date: '2014-06-01' } },
{ foo: 'ccc', locals: { date: '2014-01-02' } },
{ foo: 'ccc', locals: { date: '2015-01-02' } },
{ foo: 'ddd', locals: { date: '2014-01-09' } },
{ foo: 'ddd', locals: { date: '2015-04-12' } }
]);
});
it('should sort by multiple properties with null values:', function() {
var posts = [
{ foo: 'bbb', locals: { date: '2013-05-06' } },
{ foo: 'aaa', locals: { date: '2012-01-02' } },
{ foo: null, locals: { date: '2015-04-12' } },
{ foo: 'ccc', locals: { date: '2014-01-02' } },
{ foo: null, locals: { date: '2015-01-02' } },
{ foo: 'ddd', locals: { date: '2014-01-09' } },
{ foo: 'bbb', locals: { date: null } },
{ foo: 'aaa', locals: { date: '2014-02-02' } },
];
var actual = arraySort(posts, ['foo', 'locals.date']);
actual.should.eql([
{ foo: 'aaa', locals: { date: '2012-01-02' } },
{ foo: 'aaa', locals: { date: '2014-02-02' } },
{ foo: 'bbb', locals: { date: '2013-05-06' } },
{ foo: 'bbb', locals: { date: null } },
{ foo: 'ccc', locals: { date: '2014-01-02' } },
{ foo: 'ddd', locals: { date: '2014-01-09' } },
{ foo: null, locals: { date: '2015-01-02' } },
{ foo: null, locals: { date: '2015-04-12' } }
]);
});
it('should sort by multiple properties with undefined values:', function() {
var posts = [
{ foo: 'bbb', locals: { date: '2013-05-06' } },
{ foo: 'aaa', locals: { date: '2012-01-02' } },
{ locals: { date: '2015-04-12' } },
{ foo: 'ccc', locals: { date: '2014-01-02' } },
{ locals: { date: '2015-01-02' } },
{ foo: 'ddd', locals: { date: '2014-01-09' } },
{ foo: 'bbb', locals: {} },
{ foo: 'aaa', locals: { date: '2014-02-02' } },
];
var actual = arraySort(posts, ['foo', 'locals.date']);
actual.should.eql([
{ foo: 'aaa', locals: { date: '2012-01-02' } },
{ foo: 'aaa', locals: { date: '2014-02-02' } },
{ foo: 'bbb', locals: { date: '2013-05-06' } },
{ foo: 'bbb', locals: {} },
{ foo: 'ccc', locals: { date: '2014-01-02' } },
{ foo: 'ddd', locals: { date: '2014-01-09' } },
{ locals: { date: '2015-01-02' } },
{ locals: { date: '2015-04-12' } }
]);
});
it('should sort by multiple properties with null and undefined values:', function() {
var posts = [
{ foo: 'bbb', locals: { date: '2013-05-06' } },
{ foo: 'aaa', locals: { date: null } },
{ locals: { date: '2015-04-12' } },
{ foo: 'ccc', locals: { date: '2014-01-02' } },
{ locals: { date: '2015-01-02' } },
{ foo: 'ddd', locals: { date: '2014-01-09' } },
{ foo: null, locals: {} },
{ foo: 'aaa', locals: { date: '2014-02-02' } },
];
var actual = arraySort(posts, ['foo', 'locals.date']);
actual.should.eql([
{ foo: 'aaa', locals: { date: '2014-02-02' } },
{ foo: 'aaa', locals: { date: null } },
{ foo: 'bbb', locals: { date: '2013-05-06' } },
{ foo: 'ccc', locals: { date: '2014-01-02' } },
{ foo: 'ddd', locals: { date: '2014-01-09' } },
{ foo: null, locals: {} },
{ locals: { date: '2015-01-02' } },
{ locals: { date: '2015-04-12' } }
]);
});
it('should sort with a function:', function() {
var arr = [{key: 'y'}, {key: 'z'}, {key: 'x'}];
var actual = arraySort(arr, function(a, b) {
return a.key < b.key ? -1 : (a.key > b.key ? 1 : 0);
});
actual.should.eql([
{key: 'x'},
{key: 'y'},
{key: 'z'}
]);
});
it('should support sorting with a list of function:', function() {
var arr = [
{foo: 'w', bar: 'y', baz: 'w', quux: 'a'},
{foo: 'x', bar: 'y', baz: 'w', quux: 'b'},
{foo: 'x', bar: 'y', baz: 'z', quux: 'c'},
{foo: 'x', bar: 'x', baz: 'w', quux: 'd'},
];
var compare = function(prop) {
return function(a, b) {
return a[prop].localeCompare(b[prop]);
};
};
var actual = arraySort(arr,
compare('foo'),
compare('bar'),
compare('baz'),
compare('quux'));
actual.should.eql([
{ foo: 'w', bar: 'y', baz: 'w', quux: 'a' },
{ foo: 'x', bar: 'x', baz: 'w', quux: 'd' },
{ foo: 'x', bar: 'y', baz: 'w', quux: 'b' },
{ foo: 'x', bar: 'y', baz: 'z', quux: 'c' }
]);
});
it('should support sorting with an array of function:', function() {
var arr = [
{foo: 'w', bar: 'y', baz: 'w', quux: 'a'},
{foo: 'x', bar: 'y', baz: 'w', quux: 'b'},
{foo: 'x', bar: 'y', baz: 'z', quux: 'c'},
{foo: 'x', bar: 'x', baz: 'w', quux: 'd'},
];
var compare = function(prop) {
return function(a, b) {
return a[prop].localeCompare(b[prop]);
};
};
var actual = arraySort(arr, [
compare('foo'),
compare('bar'),
compare('baz'),
compare('quux')
]);
actual.should.eql([
{ foo: 'w', bar: 'y', baz: 'w', quux: 'a' },
{ foo: 'x', bar: 'x', baz: 'w', quux: 'd' },
{ foo: 'x', bar: 'y', baz: 'w', quux: 'b' },
{ foo: 'x', bar: 'y', baz: 'z', quux: 'c' }
]);
});
it('should support sorting with any combination of functions and properties:', function() {
var posts = [
{ path: 'a.md', locals: { date: '2014-01-01', foo: 'zzz', bar: 1 } },
{ path: 'f.md', locals: { date: '2014-01-01', foo: 'mmm', bar: 2 } },
{ path: 'd.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 3 } },
{ path: 'i.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 5 } },
{ path: 'k.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 1 } },
{ path: 'j.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 4 } },
{ path: 'h.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 6 } },
{ path: 'l.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 7 } },
{ path: 'e.md', locals: { date: '2015-01-02', foo: 'aaa', bar: 8 } },
{ path: 'b.md', locals: { date: '2012-01-02', foo: 'ccc', bar: 9 } },
{ path: 'f.md', locals: { date: '2014-06-01', foo: 'rrr', bar: 10 } },
{ path: 'c.md', locals: { date: '2015-04-12', foo: 'ttt', bar: 11 } },
{ path: 'g.md', locals: { date: '2014-02-02', foo: 'yyy', bar: 12 } },
];
var compare = function(prop) {
return function(a, b, fn) {
var valA = get(a, prop);
var valB = get(b, prop);
return fn(valA, valB);
};
};
var actual = arraySort(posts, 'locals.date', 'doesnt.exist', compare('locals.foo'), [
compare('locals.bar')
]);
actual.should.eql([
{ path: 'b.md', locals: { date: '2012-01-02', foo: 'ccc', bar: 9 } },
{ path: 'f.md', locals: { date: '2014-01-01', foo: 'mmm', bar: 2 } },
{ path: 'k.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 1 } },
{ path: 'd.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 3 } },
{ path: 'j.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 4 } },
{ path: 'i.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 5 } },
{ path: 'h.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 6 } },
{ path: 'l.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 7 } },
{ path: 'a.md', locals: { date: '2014-01-01', foo: 'zzz', bar: 1 } },
{ path: 'g.md', locals: { date: '2014-02-02', foo: 'yyy', bar: 12 } },
{ path: 'f.md', locals: { date: '2014-06-01', foo: 'rrr', bar: 10 } },
{ path: 'e.md', locals: { date: '2015-01-02', foo: 'aaa', bar: 8 } },
{ path: 'c.md', locals: { date: '2015-04-12', foo: 'ttt', bar: 11 } }
]);
});
it('should support reverse sorting with any combination of functions and properties:', function() {
var posts = [
{ path: 'a.md', locals: { date: '2014-01-01', foo: 'zzz', bar: 1 } },
{ path: 'f.md', locals: { date: '2014-01-01', foo: 'mmm', bar: 2 } },
{ path: 'd.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 3 } },
{ path: 'i.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 5 } },
{ path: 'k.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 1 } },
{ path: 'j.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 4 } },
{ path: 'h.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 6 } },
{ path: 'l.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 7 } },
{ path: 'e.md', locals: { date: '2015-01-02', foo: 'aaa', bar: 8 } },
{ path: 'b.md', locals: { date: '2012-01-02', foo: 'ccc', bar: 9 } },
{ path: 'f.md', locals: { date: '2014-06-01', foo: 'rrr', bar: 10 } },
{ path: 'c.md', locals: { date: '2015-04-12', foo: 'ttt', bar: 11 } },
{ path: 'g.md', locals: { date: '2014-02-02', foo: 'yyy', bar: 12 } },
];
var compare = function(prop) {
return function(a, b, fn) {
var valA = get(a, prop);
var valB = get(b, prop);
return fn(valA, valB);
};
};
var actual = arraySort(posts, 'locals.date', 'doesnt.exist', compare('locals.foo'), [
compare('locals.bar')
], { reverse: true });
actual.should.eql([
{ path: 'c.md', locals: { date: '2015-04-12', foo: 'ttt', bar: 11 } },
{ path: 'e.md', locals: { date: '2015-01-02', foo: 'aaa', bar: 8 } },
{ path: 'f.md', locals: { date: '2014-06-01', foo: 'rrr', bar: 10 } },
{ path: 'g.md', locals: { date: '2014-02-02', foo: 'yyy', bar: 12 } },
{ path: 'a.md', locals: { date: '2014-01-01', foo: 'zzz', bar: 1 } },
{ path: 'l.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 7 } },
{ path: 'h.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 6 } },
{ path: 'i.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 5 } },
{ path: 'j.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 4 } },
{ path: 'd.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 3 } },
{ path: 'k.md', locals: { date: '2014-01-01', foo: 'xxx', bar: 1 } },
{ path: 'f.md', locals: { date: '2014-01-01', foo: 'mmm', bar: 2 } },
{ path: 'b.md', locals: { date: '2012-01-02', foo: 'ccc', bar: 9 } }
]);
});
});