Fix React Component tests

src/settings/components/form/BlacklistForm.jsx

@@ -7,14 +7,9 @@ import PropTypes from 'prop-types';
 class BlacklistForm extends React.Component {
 
   render() {
-    let value = this.props.value;
-    if (!value) {
-      value = [];
-    }
-
     return <div className='form-blacklist-form'>
       {
-        value.map((url, index) => {
+        this.props.value.map((url, index) => {
           return <div key={index} className='form-blacklist-form-row'>
             <input data-index={index} type='text' name='url'
               className='column-url' value={url}
@@ -55,4 +50,8 @@ BlacklistForm.propTypes = {
   onChange: PropTypes.func,
 };
 
+BlacklistForm.defaultProps = {
+  value: [],
+};
+
 export default BlacklistForm;

src/settings/components/form/KeymapsForm.jsx

@@ -7,10 +7,6 @@ import keymaps from '../../keymaps';
 class KeymapsForm extends React.Component {
 
   render() {
-    let values = this.props.value;
-    if (!values) {
-      values = {};
-    }
     return <div className='form-keymaps-form'>
       {
         keymaps.fields.map((group, index) => {
@@ -19,7 +15,7 @@ class KeymapsForm extends React.Component {
               group.map((field) => {
                 let name = field[0];
                 let label = field[1];
-                let value = values[name];
+                let value = this.props.value[name] || '';
                 return <Input
                   type='text' id={name} name={name} key={name}
                   label={label} value={value}
@@ -50,4 +46,8 @@ KeymapsForm.propTypes = {
   onChange: PropTypes.func,
 };
 
+KeymapsForm.defaultProps = {
+  value: {},
+};
+
 export default KeymapsForm;

src/settings/components/form/SearchForm.jsx

@@ -8,9 +8,6 @@ class SearchForm extends React.Component {
 
   render() {
     let value = this.props.value;
-    if (!value) {
-      value = { default: '', engines: []};
-    }
     if (!value.engines) {
       value.engines = [];
     }
@@ -82,7 +79,10 @@ SearchForm.propTypes = {
     engines: PropTypes.arrayOf(PropTypes.arrayOf(PropTypes.string)),
   }),
   onChange: PropTypes.func,
+};
 
+SearchForm.defaultProps = {
+  value: { default: '', engines: []},
 };
 
 export default SearchForm;