Add clean datasource feature

Author: Ryan Schumacher

lib/helpers.js

@@ -26,6 +26,17 @@ _beforeEach.withApp = function(app) {
   });
 }
 
+_beforeEach.cleanDatasource = function(dsName) {
+  beforeEach(function() {
+    if(!dsName) dsName = 'db';
+
+    if (this.app) {
+      this.app.datasources[dsName].automigrate();
+      this.app.datasources[dsName].connector.ids = {};
+    }
+  });
+}
+
 function mixin(obj, into) {
   Object.keys(obj).forEach(function(key) {
     if(typeof obj[key] === 'function') {

test/test.js

@@ -86,4 +86,27 @@ describe('helpers', function () {
       });
     });
   });
+
+  describe('cleanDatasource', function() {
+    helpers.describe.staticMethod('create', function() {
+      helpers.beforeEach.withArgs({foo: 'bar'});
+      helpers.describe.whenCalledRemotely('POST', '/xxx-test-models', function() {
+        it('should call the method over rest', function () {
+          assert.equal(this.res.statusCode, 200);
+        });
+      });
+    });
+
+    helpers.describe.staticMethod('findById', function() {
+      helpers.beforeEach.givenModel('xxx-test-model', {foo: 'bar'});
+      helpers.beforeEach.cleanDatasource();
+      helpers.describe.whenCalledRemotely('GET', function () {
+        return '/xxx-test-models/' + this['xxx-test-model'].id;
+      }, function() {
+        it('should not find the given model', function () {
+          assert.equal(this.res.statusCode, 404);
+        });
+      });
+    });
+  });
 });