add displayName to test

Author: VeraZab

src/lib/__tests__/unpackPlotProps-test.js

@@ -1,15 +1,19 @@
 import {computeCustomConfigVisibility} from '../index';
 import {Component} from 'react';
+
 class ColorscalePicker extends Component {
   render() {
     return null;
   }
 }
+ColorscalePicker.displayName = 'ColorscalePicker';
+
 class AnotherPicker extends Component {
   render() {
     return null;
   }
 }
+AnotherPicker.displayName = 'AnotherPicker';
 
 const validate = (string, expected, config, wrappedComponent) => {
   const isVisible = computeCustomConfigVisibility({attr: string}, 'red', config, wrappedComponent);
@@ -79,7 +83,7 @@ describe('computeCustomConfigVisibility', () => {
               {
                 type: 'attrName',
                 regex_match: 'marker.color',
-                exceptions: [{type: 'controlType', regex_match: 'ColorscalePicker'}],
+                exceptions: [{type: 'controlType', regex_match: '^ColorscalePicker$'}],
               },
             ],
           },