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test.js
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test.js
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'use strict';
require('mocha');
var path = require('path');
var Base = require('base');
var assert = require('assert');
var yaml = require('js-yaml');
var data = require('./');
var utils = data.utils;
var app;
Base.use(function() {
this.isApp = true;
});
describe('data', function() {
beforeEach(function() {
app = new Base();
});
describe('plugin', function() {
it('should add the data method to the `app` instance:', function() {
app.use(data());
assert.equal(typeof app.data, 'function');
});
it('should not add the data method to the `Base` prototype:', function() {
app.use(data());
assert.notEqual(typeof Base.prototype.data, 'function');
});
});
describe('utils', function() {
it('should expose utils', function() {
assert(data.utils);
});
it('should expose utils as a getter', function() {
assert.equal(typeof data.utils, 'function');
});
it('should format a file extension', function() {
assert.equal(utils.formatExt('foo'), '.foo');
assert.equal(utils.formatExt('.foo'), '.foo');
});
});
describe('defaults', function() {
it('should set data on `app.cache.data` by default', function() {
app.use(data());
app.data('a', 'b');
assert.equal(app.cache.data.a, 'b');
});
it('should emit a data event with "args"', function(cb) {
app.use(data());
app.on('data', function(args) {
assert(args);
assert(Array.isArray(args));
assert.equal(args.length, 2);
cb();
});
app.data('a', 'b');
assert.equal(app.cache.data.a, 'b');
});
});
describe('custom properties', function() {
it('should set data on app.foo', function() {
app.use(data('foo'));
app.data('a', 'b');
assert.equal(app.foo.a, 'b');
});
it('should set data on app.bar', function() {
app.use(data('bar'));
app.data('a', 'b');
assert.equal(app.bar.a, 'b');
});
it('should not overwrite existing values', function() {
app.abc = {x: 'y'};
app.use(data('abc'));
app.data('a', 'b');
assert.equal(app.abc.x, 'y');
assert.equal(app.abc.a, 'b');
});
});
describe('.set method', function() {
beforeEach(function() {
app = new Base();
app.use(data());
});
it('should set an object on `app.cache.data`', function() {
app.data.set({a: 'b'});
assert.equal(app.cache.data.a, 'b');
});
it('should set a key-value pair on `app.cache.data`', function() {
app.data.set('c', 'd');
assert.equal(app.cache.data.c, 'd');
});
it('should deeply set a key-value pair onto `app.cache.data`', function() {
app.data.set('a.b.c.d', {e: 'f'});
assert.deepEqual(app.cache.data.a, {b: {c: {d: {e: 'f'}}}});
});
});
describe('.get method', function() {
beforeEach(function() {
app = new Base();
app.use(data());
});
it('should get a value from `app.cache.data`', function() {
app.data.set({a: 'b'});
assert.equal(app.data.get('a'), 'b');
});
it('should get a deeply nested value from `app.cache.data`', function() {
app.data.merge({a: {b: {c: {d: {e: 'f'}}}}});
assert.deepEqual(app.data.get('a.b.c'), {d: {e: 'f'}});
});
});
describe('.merge method', function() {
beforeEach(function() {
app = new Base();
app.use(data());
});
it('should merge an object onto `app.cache.data`', function() {
app.data({c: 'd'});
app.data.merge({a: 'b'});
assert.equal(app.cache.data.a, 'b');
assert.equal(app.cache.data.c, 'd');
});
it('should deeply merge an object onto `app.cache.data`', function() {
app.data({c: {d: 'e'}});
app.data.merge({c: {f: 'g'}});
assert.deepEqual(app.cache.data.c, {d: 'e', f: 'g'});
});
});
describe('.union method', function() {
beforeEach(function() {
app = new Base();
app.use(data());
});
it('should union an array on `app.cache.data`', function() {
app.data({a: ['b', 'c']});
app.data.union('a', ['d', 'e']);
assert.deepEqual(app.cache.data.a, ['b', 'c', 'd', 'e']);
});
it('should deeply union an array on `app.cache.data`', function() {
app.data({a: {b: {c: ['b', 'c']}}});
app.data.union('a.b.c', ['d', 'e']);
assert.deepEqual(app.cache.data.a.b.c, ['b', 'c', 'd', 'e']);
});
});
describe('filepath arguments', function() {
beforeEach(function() {
app = new Base();
app.use(data());
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
});
it('should run a loader on a matching filepath:', function() {
app.data('package.json');
assert.equal(app.cache.data.name, 'base-data');
});
it('should run multiple loaders on a matching filepath:', function() {
app.dataLoader(/\.json$/, function(data) {
data.foo = 'bar';
return data;
});
app.data('package.json');
assert.equal(app.cache.data.name, 'base-data');
assert.equal(app.cache.data.foo, 'bar');
});
it('should merge data from files:', function() {
app.data({c: 'd'});
app.data('fixtures/a.json');
assert.equal(app.cache.data.a, 'b');
assert.equal(app.cache.data.c, 'd');
});
it('should load data from an array of filepaths:', function() {
app.data(['package.json', 'fixtures/a.json']);
assert.equal(app.cache.data.name, 'base-data');
assert.equal(app.cache.data.a, 'b');
});
it('should throw an error on invalid keys:', function() {
app.use(data());
try {
app.data(function() {});
} catch (err) {
assert(err);
assert(err.message = 'expected value to be a string, array or object.');
}
});
it('should fail on non-existant files:', function(cb) {
app.use(data());
try {
app.data('fixtures/foo.md');
app.data('fixtures/slslsl.json');
cb(new Error('expected an error'));
} catch (err) {
assert(/failed to read/i.test(err.message));
cb();
}
});
});
describe('glob arguments', function() {
beforeEach(function() {
app = new Base();
app.use(data());
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
});
it('should run a loader on globbed files:', function() {
app.data('*.json');
assert.equal(app.cache.data.name, 'base-data');
});
it('should run multiple loaders on globbed files:', function() {
app.dataLoader(/\.json$/, function(data) {
data.foo = 'bar';
return data;
});
app.data('*.json');
assert.equal(app.cache.data.name, 'base-data');
assert.equal(app.cache.data.foo, 'bar');
});
it('should merge data from a glob of files:', function() {
app.use(data());
app.data({c: 'd'});
app.data('fixtures/*.json');
assert.equal(app.cache.data.a, 'b');
assert.equal(app.cache.data.c, 'd');
});
it('should pass options to matched:', function() {
app.use(data());
app.data({c: 'd'});
app.data('*.json', {cwd: 'fixtures'});
assert.equal(app.cache.data.a, 'b');
assert.equal(app.cache.data.c, 'd');
});
it('should merge data from an array of globs:', function() {
app.use(data());
app.data({c: 'd'});
app.data(['fixtures/*.json']);
assert.equal(app.cache.data.a, 'b');
assert.equal(app.cache.data.c, 'd');
});
});
describe('object arguments', function() {
beforeEach(function() {
app = new Base();
app.use(data());
});
it('should set an object:', function() {
app.data({a: 'b'});
assert.equal(app.cache.data.a, 'b');
});
it('should set a list of objects:', function() {
app.data({a: 'b'}, {c: 'd'});
assert.equal(app.cache.data.a, 'b');
assert.equal(app.cache.data.c, 'd');
});
});
describe('array arguments', function() {
beforeEach(function() {
app = new Base();
app.use(data());
});
it('should set an array:', function() {
app.data([{a: 'b'}]);
assert.equal(app.cache.data.a, 'b');
});
it('should union an array value:', function() {
app.data('a', ['b']);
app.data('a', ['c'], true);
assert.equal(app.cache.data.a[0], 'b');
assert.equal(app.cache.data.a[1], 'c');
});
});
describe('string arguments', function() {
beforeEach(function() {
app = new Base();
app.use(data());
});
it('should set string/string:', function() {
app.data('a', 'b');
assert.equal(app.cache.data.a, 'b');
});
it('should set string/object:', function() {
app.data('a', {b: 'c'});
assert.deepEqual(app.cache.data.a, {b: 'c'});
});
it('should return a value when a single string arg is passed', function() {
app.data({abc: 'xyz'});
assert.equal(app.data('abc'), 'xyz');
});
it('should read a file from a single string arg', function() {
app.data('fixtures/a.json');
assert.equal(app.data('a'), 'b');
});
it('should merge a key/value pair when value is an object:', function() {
app.data('a', {b: 'c'});
app.data('a', {d: 'e'});
assert.deepEqual(app.cache.data.a, {b: 'c', d: 'e'});
});
it('should support using dot notation in the key:', function() {
app.data('a.b', {c: 'd'});
app.data('a.b', {e: 'f'});
assert.deepEqual(app.cache.data.a.b, {c: 'd', e: 'f'});
});
it('should extend data', function() {
app.data({c: 'd'});
assert.equal(app.cache.data.c, 'd');
});
it('should overwrite a string value', function() {
app.data('a', 'b');
assert.equal(app.cache.data.a, 'b');
app.data('a', 'c');
assert.equal(app.cache.data.a, 'c');
});
it('should update an array value', function() {
app.data('a', ['b']);
assert.deepEqual(app.cache.data.a, ['b']);
app.data('a', ['c'], true);
assert.deepEqual(app.cache.data.a, ['b', 'c']);
});
it('should overwrite an array value', function() {
app.data('a', ['b']);
assert.deepEqual(app.cache.data.a, ['b']);
app.data('a', ['c']);
assert.deepEqual(app.cache.data.a, ['c']);
});
it('should merge data', function() {
app.data({a: 'b'});
app.data({c: 'd'});
assert.equal(app.cache.data.a, 'b');
assert.equal(app.cache.data.c, 'd');
});
it('should deeply merge data', function() {
app.data({a: {b: {c: 'd'}}});
app.data({a: {b: {d: 'e'}}});
app.data({a: {b: {e: 'f'}}});
assert.equal(app.cache.data.a.b.c, 'd');
assert.equal(app.cache.data.a.b.d, 'e');
assert.equal(app.cache.data.a.b.e, 'f');
});
});
describe('data.json', function() {
beforeEach(function() {
app = new Base();
app.use(data());
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
});
it('should merge `data.json` onto the root of the object:', function() {
app.use(data());
app.data({c: 'd'});
app.data('fixtures/data.json');
assert.equal(app.cache.data.me, 'I\'m at the root!');
assert.equal(app.cache.data.c, 'd');
});
it('should work when data.json is in a glob of files:', function() {
app.use(data());
app.data('fixtures/*.json');
assert.equal(app.cache.data.me, 'I\'m at the root!');
});
});
describe('options.namespace', function() {
beforeEach(function() {
app = new Base();
app.use(data());
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
});
it('should namespace data using the default rename function:', function() {
app = new Base();
app.use(data({namespace: true}));
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
app.data({c: 'd'});
app.data('fixtures/a.json');
assert.equal(app.cache.data.a.a, 'b');
assert.equal(app.cache.data.c, 'd');
});
it('should use the filename as the namespace', function() {
app.data('fixtures/a.json', {namespace: true});
assert.equal(app.cache.data.a.a, 'b');
});
it('should use the namespace specified as a string', function() {
app.data('fixtures/a.json', {namespace: 'abc'});
assert.equal(app.cache.data.abc.a, 'b');
});
it('should not namespace when false', function() {
app.data('fixtures/a.json', {namespace: false});
assert.equal(app.cache.data.a, 'b');
});
it('should use a custom namespace function:', function() {
app = new Base();
function rename(fp) {
var segs = fp.split(path.sep);
segs.pop();
return segs.pop();
}
app.use(data({namespace: rename}));
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
app.data({c: 'd'});
app.data('fixtures/*/index.json');
assert.equal(app.cache.data.one.name, 'one');
assert.equal(app.cache.data.two.name, 'two');
assert.equal(app.cache.data.three.name, 'three');
assert.equal(app.cache.data.c, 'd');
});
});
});
describe('custom property', function() {
beforeEach(function() {
app = new Base();
app.use(data());
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
});
it('should set/get data:', function() {
app.use(data('foo.bar'));
app.data('a', 'b');
assert.equal(app.foo.bar.a, 'b');
});
it('should merge a key/value pair when value is an object:', function() {
app.use(data('foo.bar'));
app.data('foo', {one: 'two'});
app.data('foo', {bar: 'baz'});
assert.deepEqual(app.foo.bar.foo, {one: 'two', bar: 'baz'});
});
it('should support using dot notation in the key:', function() {
app.use(data('foo.bar'));
app.data('a.b', {one: 'two'});
app.data('a.b', {baz: 'qux'});
assert.deepEqual(app.foo.bar.a.b, {one: 'two', baz: 'qux'});
});
it('should extend data', function() {
app.use(data('foo.bar'));
app.data({c: 'd'});
assert.equal(app.foo.bar.c, 'd');
});
it('should merge data', function() {
app.use(data('foo.bar'));
app.data({a: 'b'});
app.data({c: 'd'});
assert.equal(app.foo.bar.a, 'b');
assert.equal(app.foo.bar.c, 'd');
});
it('should deeply merge data', function() {
app.use(data('foo.bar'));
app.data({a: {b: {c: 'd'}}});
app.data({a: {b: {d: 'e'}}});
app.data({a: {b: {e: 'f'}}});
assert.equal(app.foo.bar.a.b.c, 'd');
assert.equal(app.foo.bar.a.b.d, 'e');
assert.equal(app.foo.bar.a.b.e, 'f');
});
it('should merge data from files:', function() {
app.use(data('foo.bar'));
app.data({c: 'd'});
app.data('fixtures/a.json');
assert.equal(app.foo.bar.a, 'b');
assert.equal(app.foo.bar.c, 'd');
});
it('should namespace data using the default rename function:', function() {
app.use(data('foo.bar', {namespace: true}));
app.data({c: 'd'});
app.data('fixtures/a.json');
assert.equal(app.foo.bar.a.a, 'b');
assert.equal(app.foo.bar.c, 'd');
});
it('should merge `data.json` onto the root of the object:', function() {
app.use(data('foo.bar'));
app.data({c: 'd'});
app.data('fixtures/data.json');
assert.equal(app.foo.bar.me, 'I\'m at the root!');
assert.equal(app.foo.bar.c, 'd');
});
it('should namespace data using a custom namespace function:', function() {
function rename(key) {
return 'foo-' + utils.basename(key);
}
app.use(data('foo.bar', {namespace: rename}));
app.data({c: 'd'});
app.data('fixtures/a.json');
assert.equal(app.foo.bar['foo-a'].a, 'b');
assert.equal(app.foo.bar.c, 'd');
});
it('should fail on non-existant files:', function(cb) {
app.use(data('foo.bar'));
try {
app.data('fixtures/slslsl.json');
cb(new Error('expected an error'));
} catch (err) {
assert(/failed to read/i.test(err.message));
cb();
}
});
it('should throw an error on invalid keys:', function() {
app.use(data('foo.bar'));
try {
app.data(function() {});
} catch (err) {
assert(err);
assert(err.message = 'expected value to be a string, array or object.');
}
});
it('should merge data from a glob of files:', function() {
app.use(data('foo.bar'));
app.data({c: 'd'});
app.data('fixtures/*.json');
assert.equal(app.foo.bar.a, 'b');
assert.equal(app.foo.bar.c, 'd');
});
it('should merge data from an array of globs:', function() {
app.use(data('foo.bar'));
app.data({c: 'd'});
app.data(['fixtures/*.json']);
assert.equal(app.foo.bar.a, 'b');
assert.equal(app.foo.bar.c, 'd');
});
});
describe('dataLoader', function() {
describe('defaults', function() {
beforeEach(function() {
app = new Base();
app.use(data());
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
});
it('should expose a dataLoaders property', function() {
assert(app.dataLoaders);
assert(Array.isArray(app.dataLoaders));
assert.equal(app.dataLoaders.length, 1);
});
it('should expose a default json loader', function() {
assert(app.dataLoaders[0].hasOwnProperty('name'));
assert.equal(app.dataLoaders[0].name, 'json');
});
it('should load data from a json file', function() {
app.data('package.json');
assert.equal(app.cache.data.name, 'base-data');
});
it('should load data from a glob of json files', function() {
app.data('*.json');
assert.equal(app.cache.data.name, 'base-data');
});
});
describe('custom dataLoaders', function() {
beforeEach(function() {
app = new Base();
app.use(data());
app.dataLoader('json', function(str) {
return JSON.parse(str);
});
app.dataLoader(/\.ya?ml$/, function(str) {
return yaml.load(str);
});
});
it('should register a dataLoader', function() {
assert.equal(app.dataLoaders.length, 2);
});
it('should load data from a yaml file', function() {
app.data('fixtures/c.yml');
assert.deepEqual(app.cache.data, {c: ['d', 'e', 'f']});
});
it('should load data.yaml object on the root', function() {
app.data('fixtures/*.yaml');
assert.equal(app.cache.data.me1, 'I\'m a yaml file at the root!');
});
it('should load data.yml object on the root', function() {
app.data('fixtures/*.yml');
assert.equal(app.cache.data.me2, 'I\'m a yml file at the root!');
});
it('should load data.* object on the root', function() {
app.data('fixtures/*.{yml,yaml}');
assert.equal(app.cache.data.me1, 'I\'m a yaml file at the root!');
assert.equal(app.cache.data.me2, 'I\'m a yml file at the root!');
});
it('should load data from a glob of yaml files', function() {
app.data('fixtures/*.{yml,yaml}');
assert.deepEqual(app.cache.data.c, ['d', 'e', 'f']);
});
});
});