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node_modules/loopback-datasource-juggler/test/kvao/get-set.suite.js
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'use strict';
var should = require('should');
var helpers = require('./_helpers');
var Promise = require('bluebird');
module.exports = function(dataSourceFactory, connectorCapabilities) {
var TTL_PRECISION = connectorCapabilities.ttlPrecision;
describe('get/set', function() {
var CacheItem;
beforeEach(function unpackContext() {
CacheItem = helpers.givenCacheItem(dataSourceFactory);
});
it('works for string values - Callback API', function(done) {
CacheItem.set('a-key', 'a-value', function(err) {
if (err) return done(err);
CacheItem.get('a-key', function(err, value) {
if (err) return done(err);
should.equal(value, 'a-value');
done();
});
});
});
it('works for string values - Promise API', function() {
return CacheItem.set('a-key', 'a-value')
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { should.equal(value, 'a-value'); });
});
it('works for Object values', function() {
return CacheItem.set('a-key', {a: 1, b: 2})
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { value.should.eql({a: 1, b: 2}); });
});
it('works for Buffer values', function() {
return CacheItem.set('a-key', new Buffer([1, 2, 3]))
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { value.should.eql(new Buffer([1, 2, 3])); });
});
it('works for Date values', function() {
return CacheItem.set('a-key', new Date('2016-08-03T11:53:03.470Z'))
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) {
value.should.be.instanceOf(Date);
value.toISOString().should.equal('2016-08-03T11:53:03.470Z');
});
});
it('works for Number values - integers', function() {
return CacheItem.set('a-key', 12345)
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { value.should.equal(12345); });
});
it('works for Number values - floats', function() {
return CacheItem.set('a-key', 12.345)
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { value.should.equal(12.345); });
});
it('works for Boolean values', function() {
return CacheItem.set('a-key', false)
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { value.should.equal(false); });
});
it('honours options.ttl', function() {
return Promise.resolve(CacheItem.set('a-key', 'a-value', {ttl: TTL_PRECISION}))
.delay(2 * TTL_PRECISION)
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { should.equal(value, null); });
});
describe('get', function() {
it('returns "null" when key does not exist', function() {
return CacheItem.get('key-does-not-exist')
.then(function(value) { should.equal(value, null); });
});
});
describe('set', function() {
it('converts numeric options arg to options.ttl', function() {
return Promise.resolve(CacheItem.set('a-key', 'a-value', TTL_PRECISION))
.delay(2 * TTL_PRECISION)
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { should.equal(value, null); });
});
it('resets TTL timer', function() {
return Promise.resolve(CacheItem.set('a-key', 'a-value', {ttl: TTL_PRECISION}))
.then(function() {
return CacheItem.set('a-key', 'another-value'); // no TTL
})
.delay(2 * TTL_PRECISION)
.then(function() { return CacheItem.get('a-key'); })
.then(function(value) { should.equal(value, 'another-value'); });
});
});
});
};
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