get rid of global notify (#5355)

* [toasts] get rid of notify globals, refactor messageToasts for use by entire app

* [remove notify] use arrow func in ajax call

* fix lint + tests

* actually fix tests from messageToast refactor

* add 'test:one' npm script

* debugger

* [toasts] convert bootstrap flash messages to toasts in explore + sqllab

* [toasts][tests] import from right file

superset/assets/spec/javascripts/explore/components/DatasourceControl_spec.jsx

@@ -1,7 +1,8 @@
 import React from 'react';
 import sinon from 'sinon';
+import configureStore from 'redux-mock-store';
 import { expect } from 'chai';
-import { describe, it, beforeEach } from 'mocha';
+import { describe, it } from 'mocha';
 import { shallow } from 'enzyme';
 import { Modal } from 'react-bootstrap';
 import DatasourceControl from '../../../../src/explore/components/controls/DatasourceControl';
@@ -26,13 +27,14 @@ const defaultProps = {
 };
 
 describe('DatasourceControl', () => {
-  let wrapper;
-
-  beforeEach(() => {
-    wrapper = shallow(<DatasourceControl {...defaultProps} />);
-  });
+  function setup() {
+    const mockStore = configureStore([]);
+    const store = mockStore({});
+    return shallow(<DatasourceControl {...defaultProps} />, { context: { store } }).dive();
+  }
 
   it('renders a Modal', () => {
+    const wrapper = setup();
     expect(wrapper.find(Modal)).to.have.lengthOf(1);
   });
 });