Add read/write test for _GlobalConfig

spec/ParseGlobalConfig.spec.js

@@ -0,0 +1,49 @@
+// run test when changing related file using
+// $ TESTING=1 node_modules/jasmine/bin/jasmine.js spec/ParseGlobalConfig.spec.js
+
+var auth = require('../Auth');
+var cache = require('../cache');
+var Config = require('../Config');
+var DatabaseAdapter = require('../DatabaseAdapter');
+var Parse = require('parse/node').Parse;
+var rest = require('../rest');
+
+var config = new Config('test');
+var database = DatabaseAdapter.getDatabaseConnection('test');
+
+describe('GlobalConfig', () => {
+  beforeEach(function() {
+    database.create('_GlobalConfig', { objectId: 1, params: { mostValuableCompany: 'Apple' } }, {});
+  });
+
+  it('find existing values', (done) => {
+    rest.find(config, auth.nobody(config), '_GlobalConfig', 1)
+    .then(() => {
+      return database.mongoFind('_GlobalConfig', {}, {});
+    }).then((results) => {
+      expect(results.length).toEqual(1);
+      var obj = results[0];
+      expect(obj.params.mostValuableCompany).toEqual('Apple');
+      done();
+    }).catch((error) => { console.log(error); });
+  });
+
+  it('update with a new value', (done) => {
+    var input = {
+      params: {
+        mostValuableCompany: 'Alphabet'
+      }
+    };
+    rest.update(config, auth.nobody(config), '_GlobalConfig', 1, input)
+    .then(() => {
+      return database.mongoFind('_GlobalConfig', {}, {});
+    }).then((results) => {
+      expect(results.length).toEqual(1);
+      var obj = results[0];
+      expect(obj.params.mostValuableCompany).toEqual('Alphabet');
+      done();
+    }).catch((error) => { console.log(error); });
+  });
+
+
+});