add test for ControlPanelSection (#2961)

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

@@ -0,0 +1,52 @@
+import React from 'react';
+import { expect } from 'chai';
+import { describe, it } from 'mocha';
+import { shallow } from 'enzyme';
+import { Panel } from 'react-bootstrap';
+
+import InfoTooltipWithTrigger from
+  '../../../../javascripts/components/InfoTooltipWithTrigger';
+
+import ControlPanelSection from
+  '../../../../javascripts/explore/components/ControlPanelSection';
+
+const defaultProps = {
+  children: <div>a child element</div>,
+};
+
+const optionalProps = {
+  label: 'my label',
+  description: 'my description',
+  tooltip: 'my tooltip',
+};
+
+describe('ControlPanelSection', () => {
+  let wrapper;
+  let props;
+  it('is a valid element', () => {
+    expect(
+      React.isValidElement(<ControlPanelSection {...defaultProps} />),
+    ).to.equal(true);
+  });
+
+  it('renders a Panel component', () => {
+    wrapper = shallow(<ControlPanelSection {...defaultProps} />);
+    expect(wrapper.find(Panel)).to.have.length(1);
+  });
+
+  describe('with optional props', () => {
+    beforeEach(() => {
+      props = Object.assign(defaultProps, optionalProps);
+      wrapper = shallow(<ControlPanelSection {...props} />);
+    });
+
+    it('renders a label if present', () => {
+      expect(wrapper.find(Panel).dive().text()).to.contain('my label');
+    });
+
+    it('renders a InfoTooltipWithTrigger if label and tooltip is present', () => {
+      expect(wrapper.find(Panel).dive().find(InfoTooltipWithTrigger))
+        .to.have.length(1);
+    });
+  });
+});