refactors filesAdapter tests in factories

spec/FilesControllerTestFactory.js

@@ -0,0 +1,73 @@
+
+var FilesController = require('../src/Controllers/FilesController').FilesController;
+var Config = require("../src/Config");
+
+var testAdapter = function(name, adapter) {
+  // Small additional tests to improve overall coverage
+  
+  var config = new Config(Parse.applicationId);
+  var filesController = new FilesController(adapter);
+
+  describe("FilesController with "+name,()=>{
+    
+    it("should properly expand objects", (done) => {
+      
+      var result = filesController.expandFilesInObject(config, function(){});
+      
+      expect(result).toBeUndefined();
+      
+      var fullFile = {
+        type: '__type',
+        url: "http://an.url"
+      }
+      
+      var anObject = {
+        aFile: fullFile
+      }
+      filesController.expandFilesInObject(config, anObject);
+      expect(anObject.aFile.url).toEqual("http://an.url");
+      
+      done();
+    }) 
+    
+    it("should properly create, read, delete files", (done) => {
+      var filename;
+      filesController.createFile(config, "file.txt", "hello world").then( (result) => {
+        ok(result.url);
+        ok(result.name);
+        filename = result.name;
+        expect(result.name.match(/file.txt/)).not.toBe(null);
+        return filesController.getFileData(config, filename);
+      }, (err) => {
+        fail("The adapter should create the file");
+        console.error(err);
+        done();
+      }).then((result) => {
+        expect(result instanceof Buffer).toBe(true);
+        expect(result.toString('utf-8')).toEqual("hello world");
+        return filesController.deleteFile(config, filename);
+      }, (err) => {
+        fail("The adapter should get the file");
+        console.error(err);
+        done();
+      }).then((result) => {
+        
+        filesController.getFileData(config, filename).then((res) => {
+          fail("the file should be deleted");
+          done();
+        }, (err) => {
+          done();  
+        });
+        
+      }, (err) => {
+        fail("The adapter should delete the file");
+        console.error(err);
+        done();
+      });
+    }, 5000); // longer tests
+  });
+}
+
+module.exports = {
+  testAdapter: testAdapter
+}