js spec for analysis search & replace

spec/javascripts/utils/ElementUtils.spec.js

+import React from 'react'
+import expect from 'expect'
+
+import { searchAndReplace } from '../../../app/assets/javascripts/components/utils/quillFormat';
+import { sampleAnalysesFormatPattern } from '../../../app/assets/javascripts/components/utils/ElementUtils'
+
+
+describe('sampleAnalysesFormatPattern', () => {
+  describe('_1hnmr', () => {
+    const _1hnmr = sampleAnalysesFormatPattern['_1hnmr']
+
+    it('replaces "3 H" by "3H"', () => {
+      let content = { ops: [{ insert: 'Hello 3 Hi, 3 H byebye'}] }
+      const expected =  'Hello 3Hi, 3H byebye'
+      _1hnmr.forEach((patt) => {
+        content = searchAndReplace(content, patt.pattern, patt.replace);
+      });
+      expect(content.ops[0]['insert']).toEqual(expected)
+    })
+  })
+})