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/utils/common_spec.jsx

@@ -0,0 +1,60 @@
+/**
+ * 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.
+ */
+import {
+  optionFromValue,
+  prepareCopyToClipboardTabularData,
+  NULL_STRING,
+} from '../../../src/utils/common';
+
+describe('utils/common', () => {
+  describe('optionFromValue', () => {
+    it('converts values as expected', () => {
+      expect(optionFromValue(false)).toEqual({
+        value: false,
+        label: '<false>',
+      });
+      expect(optionFromValue(true)).toEqual({ value: true, label: '<true>' });
+      expect(optionFromValue(null)).toEqual({
+        value: NULL_STRING,
+        label: NULL_STRING,
+      });
+      expect(optionFromValue('')).toEqual({
+        value: '',
+        label: '<empty string>',
+      });
+      expect(optionFromValue('foo')).toEqual({ value: 'foo', label: 'foo' });
+      expect(optionFromValue(5)).toEqual({ value: 5, label: '5' });
+    });
+  });
+  describe('prepareCopyToClipboardTabularData', () => {
+    it('converts empty array', () => {
+      const array = [];
+      expect(prepareCopyToClipboardTabularData(array)).toEqual('');
+    });
+    it('converts non empty array', () => {
+      const array = [
+        { column1: 'lorem', column2: 'ipsum' },
+        { column1: 'dolor', column2: 'sit', column3: 'amet' },
+      ];
+      expect(prepareCopyToClipboardTabularData(array)).toEqual(
+        'lorem\tipsum\ndolor\tsit\tamet\n',
+      );
+    });
+  });
+});