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/messageToasts/components/ToastPresenter_spec.jsx

@@ -0,0 +1,41 @@
+import React from 'react';
+import { shallow } from 'enzyme';
+import { describe, it } from 'mocha';
+import { expect } from 'chai';
+
+import mockMessageToasts from '../mockMessageToasts';
+import Toast from '../../../../src/messageToasts/components/Toast';
+import ToastPresenter from '../../../../src/messageToasts/components/ToastPresenter';
+
+describe('ToastPresenter', () => {
+  const props = {
+    toasts: mockMessageToasts,
+    removeToast() {},
+  };
+
+  function setup(overrideProps) {
+    const wrapper = shallow(<ToastPresenter {...props} {...overrideProps} />);
+    return wrapper;
+  }
+
+  it('should render a div with class toast-presenter', () => {
+    const wrapper = setup();
+    expect(wrapper.find('.toast-presenter')).to.have.length(1);
+  });
+
+  it('should render a Toast for each toast object', () => {
+    const wrapper = setup();
+    expect(wrapper.find(Toast)).to.have.length(props.toasts.length);
+  });
+
+  it('should pass removeToast to the Toast component', () => {
+    const removeToast = () => {};
+    const wrapper = setup({ removeToast });
+    expect(
+      wrapper
+        .find(Toast)
+        .first()
+        .prop('onCloseToast'),
+    ).to.equal(removeToast);
+  });
+});