Merge pull request facebook#3402 from vkramskikh/fix-empty-selects-with-value

Fix for empty <select> elements with value
(cherry picked from commit 68a2f89)

Author: zpao

src/browser/ui/dom/components/ReactDOMSelect.js

@@ -88,7 +88,9 @@ function updateOptions(component, propValue) {
         return;
       }
     }
-    options[0].selected = true;
+    if (options.length) {
+      options[0].selected = true;
+    }
   }
 }
 

src/browser/ui/dom/components/__tests__/ReactDOMSelect-test.js

@@ -43,6 +43,14 @@ describe('ReactDOMSelect', function() {
     expect(node.value).toEqual('giraffe');
   });
 
+  it('should not throw with `defaultValue` and without children', function() {
+    var stub = <select defaultValue="dummy"></select>;
+
+    expect(() => {
+      ReactTestUtils.renderIntoDocument(stub);
+    }).not.toThrow();
+  });
+
   it('should not control when using `defaultValue`', function() {
     var stub =
       <select defaultValue="giraffe">
@@ -100,6 +108,14 @@ describe('ReactDOMSelect', function() {
     expect(node.value).toEqual('gorilla');
   });
 
+  it('should not throw with `value` and without children', function() {
+    var stub = <select value="dummy"></select>;
+
+    expect(() => {
+      ReactTestUtils.renderIntoDocument(stub);
+    }).not.toThrow();
+  });
+
   it('should allow setting `value` with multiple', function() {
     var stub =
       <select multiple={true} value={['giraffe', 'gorilla']}>