SIP-32: Moving frontend code to the base of the repo (#9098)

* move assets out, get webpack dev working

* update docs to reference superset-frontend

* draw the rest of the owl

* fix docs

* fix webpack script

* rats

* correct docs

* fix tox dox

superset-frontend/spec/javascripts/explore/components/AdhocMetricOption_spec.jsx

@@ -0,0 +1,58 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+/* eslint-disable no-unused-expressions */
+import React from 'react';
+import sinon from 'sinon';
+import { shallow } from 'enzyme';
+import { Label, OverlayTrigger } from 'react-bootstrap';
+
+import AdhocMetric from '../../../../src/explore/AdhocMetric';
+import AdhocMetricOption from '../../../../src/explore/components/AdhocMetricOption';
+import { AGGREGATES } from '../../../../src/explore/constants';
+
+const columns = [
+  { type: 'VARCHAR(255)', column_name: 'source' },
+  { type: 'VARCHAR(255)', column_name: 'target' },
+  { type: 'DOUBLE', column_name: 'value' },
+];
+
+const sumValueAdhocMetric = new AdhocMetric({
+  column: columns[2],
+  aggregate: AGGREGATES.SUM,
+});
+
+function setup(overrides) {
+  const onMetricEdit = sinon.spy();
+  const props = {
+    adhocMetric: sumValueAdhocMetric,
+    onMetricEdit,
+    columns,
+    ...overrides,
+  };
+  const wrapper = shallow(<AdhocMetricOption {...props} />);
+  return { wrapper, onMetricEdit };
+}
+
+describe('AdhocMetricOption', () => {
+  it('renders an overlay trigger wrapper for the label', () => {
+    const { wrapper } = setup();
+    expect(wrapper.find(OverlayTrigger)).toHaveLength(1);
+    expect(wrapper.find(Label)).toHaveLength(1);
+  });
+});