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/utils/getToastsFromPyFlashMessages_spec.js

@@ -0,0 +1,35 @@
+import { describe, it } from 'mocha';
+import { expect } from 'chai';
+
+import {
+  DANGER_TOAST,
+  INFO_TOAST,
+  SUCCESS_TOAST,
+} from '../../../../src/messageToasts/constants';
+
+import getToastsFromPyFlashMessages from '../../../../src/messageToasts/utils/getToastsFromPyFlashMessages';
+
+describe('getToastsFromPyFlashMessages', () => {
+  it('should return an info toast', () => {
+    const toast = getToastsFromPyFlashMessages([['info', 'info test']])[0];
+    expect(toast).to.deep.include({ toastType: INFO_TOAST, text: 'info test' });
+  });
+
+  it('should return a success toast', () => {
+    const toast = getToastsFromPyFlashMessages([
+      ['success', 'success test'],
+    ])[0];
+    expect(toast).to.deep.include({
+      toastType: SUCCESS_TOAST,
+      text: 'success test',
+    });
+  });
+
+  it('should return a danger toast', () => {
+    const toast = getToastsFromPyFlashMessages([['danger', 'danger test']])[0];
+    expect(toast).to.deep.include({
+      toastType: DANGER_TOAST,
+      text: 'danger test',
+    });
+  });
+});