test props on alert wrapper (#2977)

superset/assets/spec/javascripts/sqllab/AlertsWrapper_spec.jsx

@@ -1,11 +1,31 @@
 import React from 'react';
 import { describe, it } from 'mocha';
 import { expect } from 'chai';
-
+import { shallow } from 'enzyme';
+import AlertContainer from 'react-alert';
 import AlertsWrapper from '../../../javascripts/components/AlertsWrapper';
 
 describe('AlertsWrapper', () => {
+  let wrapper;
+
+  beforeEach(() => {
+    wrapper = shallow(<AlertsWrapper />);
+  });
+
   it('is valid', () => {
     expect(React.isValidElement(<AlertsWrapper />)).to.equal(true);
   });
+
+  it('renders AlertContainer', () => {
+    expect(wrapper.find(AlertContainer)).to.have.length(1);
+  });
+
+  it('expects AlertContainer to have correct props', () => {
+    const alertContainerProps = wrapper.find(AlertContainer).props();
+    expect(alertContainerProps.offset).to.be.equal(14);
+    expect(alertContainerProps.position).to.be.equal('top right');
+    expect(alertContainerProps.theme).to.be.equal('dark');
+    expect(alertContainerProps.time).to.be.equal(5000);
+    expect(alertContainerProps.transition).to.be.equal('fade');
+  });
 });