test some utils

src/asInput/asInput.test.jsx

@@ -3,7 +3,7 @@
 import React from 'react';
 import { mount } from 'enzyme';
 
-import asInput from './index';
+import asInput, { getDisplayName } from './index';
 
 function testComponent(props) {
   return (
@@ -23,6 +23,14 @@ const baseProps = {
   description: 'i am a test component',
 };
 
+describe('getDisplayName', () => {
+  it('returns the proper display name', () => {
+    expect(getDisplayName({ displayName: 'foo' })).toEqual('foo');
+    expect(getDisplayName({ name: 'bar' })).toEqual('bar');
+    expect(getDisplayName({})).toEqual('Component');
+  });
+});
+
 describe('asInput()', () => {
   it('renders', () => {
     const props = {

src/asInput/index.jsx

@@ -5,7 +5,8 @@ import { FormGroup, FormFeedback, FormText } from 'reactstrap';
 
 import newId from '../utils/newId';
 
-const getDisplayName = WrappedComponent => WrappedComponent.displayName || WrappedComponent.name || 'Component';
+export const getDisplayName = WrappedComponent =>
+  WrappedComponent.displayName || WrappedComponent.name || 'Component';
 
 export const inputProps = {
   label: PropTypes.string.isRequired,

src/utils/utils.test.js

+import newId from './newId';
+
+describe('newId', () => {
+  it('increments on each call', () => {
+    expect(newId()).toEqual('id1');
+    expect(newId('foo-')).toEqual('foo-2');
+    expect(newId('bar-')).toEqual('bar-3');
+  });
+});