Add test for multiple text nodes in an option tag

packages/react-dom/src/__tests__/ReactDOMServerIntegration-test.js

@@ -1304,6 +1304,38 @@ describe('ReactDOMServerIntegration', () => {
           expectTextNode(e.childNodes[3], 'e');
         }
       });
+
+      itRenders(
+        'a select with value containing an option with multiple text children',
+        async render => {
+          const e = await render(
+            <select value="bar" readOnly={true}>
+              <option value="bar">A{'B'}</option>
+            </select>,
+            0,
+          );
+
+          const option = e.childNodes[0];
+
+          if (render === serverRender || render === streamRender) {
+            // We have three nodes because there is a comment between them.
+            expect(option.childNodes.length).toBe(3);
+            // Everything becomes LF when parsed from server HTML.
+            // Null character is ignored.
+            expectNode(option.childNodes[0], TEXT_NODE_TYPE, 'A');
+            expectNode(option.childNodes[2], TEXT_NODE_TYPE, 'B');
+          } else if (render === clientRenderOnServerString) {
+            // We have three nodes because there is a comment between them.
+            expect(option.childNodes.length).toBe(3);
+            expectNode(option.childNodes[0], TEXT_NODE_TYPE, 'A');
+            expectNode(option.childNodes[2], TEXT_NODE_TYPE, 'B');
+          } else {
+            expect(option.childNodes.length).toBe(2);
+            expectNode(option.childNodes[0], TEXT_NODE_TYPE, 'A');
+            expectNode(option.childNodes[1], TEXT_NODE_TYPE, 'B');
+          }
+        },
+      );
     });
 
     describe('number children', function() {