Ensuring react-test-renderer is the correct version and enabling test

package.json

@@ -158,6 +158,7 @@
     "react-dom": "^16.3.0",
     "react-ga": "^2.4.1",
     "react-i18next": "^7.3.6",
+    "react-test-renderer": "^16.3.0",
     "style-loader": "^0.20.1",
     "svg-react-loader": "^0.4.5",
     "uglifyjs-webpack-plugin": "^1.1.8",

src/components/Form/test.js

@@ -60,14 +60,11 @@ describe('Form', () => {
     expect(component.state('syntax')).toEqual('Testing value');
   });
 
-  // Disabled due to testing with getDerivedStateFromProps appears to be broken
-  // Testing this behavior in browser works correctly
-  xtest('setting expression and syntax via props', () => {
+  test('setting expression and syntax via props', () => {
     const component = shallow(
       <Form t={ translate } syntaxes={ syntaxes }/>
     );
     expect(component.state()).toEqual(expect.objectContaining({
-      expr: undefined,
       syntax: 'js'
     }));
     component.setProps({ expr: 'Testing expression' });

yarn.lock

@@ -7386,6 +7386,10 @@ react-i18next@^7.3.6:
     html-parse-stringify2 "2.0.1"
     prop-types "^15.6.0"
 
+react-is@^16.3.0:
+  version "16.3.0"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.3.0.tgz#f0e8bfd8c09b480dd610b8639d9ed65c13601224"
+
 react-reconciler@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/react-reconciler/-/react-reconciler-0.7.0.tgz#9614894103e5f138deeeb5eabaf3ee80eb1d026d"
@@ -7395,13 +7399,14 @@ react-reconciler@^0.7.0:
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
-react-test-renderer@^16.0.0-0:
-  version "16.2.0"
-  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.2.0.tgz#bddf259a6b8fcd8555f012afc8eacc238872a211"
+react-test-renderer@^16.0.0-0, react-test-renderer@^16.3.0:
+  version "16.3.0"
+  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.3.0.tgz#7e88d8cb4c2b95c161b6c6c998991166f74d473e"
   dependencies:
     fbjs "^0.8.16"
     object-assign "^4.1.1"
     prop-types "^15.6.0"
+    react-is "^16.3.0"
 
 "react@^15.6.2 || ^16.0":
   version "16.2.0"