Let Fiber skip react data attributes and comments in SSR tests

This markup is testing implementation details rather than behavior.

scripts/fiber/tests-failing.txt

@@ -108,24 +108,6 @@ src/renderers/dom/stack/client/__tests__/ReactRenderDocument-test.js
 * should throw on full document render w/ no markup
 * supports findDOMNode on full-page components
 
-src/renderers/dom/stack/server/__tests__/ReactServerRendering-test.js
-* should generate simple markup
-* should generate simple markup for self-closing tags
-* should generate simple markup for attribute with `>` symbol
-* should generate comment markup for component returns null
-* should render composite components
-* should only execute certain lifecycle methods
-* should have the correct mounting behavior
-* should not put checksum and React ID on components
-* should not put checksum and React ID on text components
-* should only execute certain lifecycle methods
-* allows setState in componentWillMount without using DOM
-* renders components with different batching strategies
-* warns with a no-op when an async setState is triggered
-* warns with a no-op when an async replaceState is triggered
-* warns with a no-op when an async forceUpdate is triggered
-* should warn when children are mutated during render
-
 src/renderers/shared/__tests__/ReactPerf-test.js
 * should count no-op update as waste
 * should count no-op update in child as waste
@@ -150,7 +132,6 @@ src/renderers/shared/stack/reconciler/__tests__/ReactComponentLifeCycle-test.js
 * should carry through each of the phases of setup
 
 src/renderers/shared/stack/reconciler/__tests__/ReactCompositeComponent-test.js
-* should not thrash a server rendered layout with client side one
 * should warn about `forceUpdate` on unmounted components
 * should warn about `setState` on unmounted components
 * should warn about `setState` in render

scripts/fiber/tests-passing-except-dev.txt

@@ -65,6 +65,9 @@ src/renderers/dom/stack/client/__tests__/ReactMountDestruction-test.js
 * should warn when unmounting a non-container root node
 * should warn when unmounting a non-container, non-root node
 
+src/renderers/dom/stack/server/__tests__/ReactServerRendering-test.js
+* should have the correct mounting behavior
+
 src/renderers/shared/hooks/__tests__/ReactComponentTreeHook-test.js
 * uses displayName or Unknown for classic components
 * uses displayName, name, or ReactComponent for modern components

scripts/fiber/tests-passing.txt

@@ -919,8 +919,23 @@ src/renderers/dom/stack/client/__tests__/findDOMNode-test.js
 * findDOMNode should not throw an error when called within a component that is not mounted
 
 src/renderers/dom/stack/server/__tests__/ReactServerRendering-test.js
+* should generate simple markup
+* should generate simple markup for self-closing tags
+* should generate simple markup for attribute with `>` symbol
+* should generate comment markup for component returns null
+* should render composite components
+* should only execute certain lifecycle methods
 * should throw with silly args
+* should not put checksum and React ID on components
+* should not put checksum and React ID on text components
+* should only execute certain lifecycle methods
 * should throw with silly args
+* allows setState in componentWillMount without using DOM
+* renders components with different batching strategies
+* warns with a no-op when an async setState is triggered
+* warns with a no-op when an async replaceState is triggered
+* warns with a no-op when an async forceUpdate is triggered
+* should warn when children are mutated during render
 
 src/renderers/native/__tests__/ReactNativeAttributePayload-test.js
 * should work with simple example
@@ -1231,6 +1246,7 @@ src/renderers/shared/stack/reconciler/__tests__/ReactComponentLifeCycle-test.js
 src/renderers/shared/stack/reconciler/__tests__/ReactCompositeComponent-test.js
 * should support module pattern components
 * should support rendering to different child types over time
+* should not thrash a server rendered layout with client side one
 * should react to state changes from callbacks
 * should rewire refs when rendering to different child types
 * should not cache old DOM nodes when switching constructors

src/renderers/dom/stack/server/__tests__/ReactServerRendering-test.js

@@ -14,6 +14,7 @@
 var ExecutionEnvironment;
 var React;
 var ReactDOM;
+var ReactDOMFeatureFlags;
 var ReactDOMServer;
 var ReactMarkupChecksum;
 var ReactReconcileTransaction;
@@ -27,6 +28,7 @@ describe('ReactDOMServer', () => {
     jest.resetModuleRegistry();
     React = require('React');
     ReactDOM = require('ReactDOM');
+    ReactDOMFeatureFlags = require('ReactDOMFeatureFlags');
     ReactMarkupChecksum = require('ReactMarkupChecksum');
     ReactTestUtils = require('ReactTestUtils');
     ReactReconcileTransaction = require('ReactReconcileTransaction');
@@ -241,7 +243,17 @@ describe('ReactDOMServer', () => {
 
       var instance = ReactDOM.render(<TestComponent name="x" />, element);
       expect(mountCount).toEqual(3);
-      expect(element.innerHTML).toBe(lastMarkup);
+
+      var expectedMarkup = lastMarkup;
+      if (ReactDOMFeatureFlags.useFiber) {
+        var reactMetaData = /\s+data-react[a-z-]+=\"[^\"]*\"/g;
+        var reactComments = /<!-- \/?react-text(: \d+)? -->/g;
+        expectedMarkup =
+          expectedMarkup
+          .replace(reactMetaData, '')
+          .replace(reactComments, '');
+      }
+      expect(element.innerHTML).toBe(expectedMarkup);
 
       // Ensure the events system works after mount into server markup
       expect(numClicks).toEqual(0);