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Add assertion to ensure copied shadow nodes are of the same type as the original

Browse Source 
Reviewed By: mdvacca

Differential Revision: D7664638

fbshipit-source-id: e1b7acbafd8a8fd9d6301d8afbb3e5959dc15b7a
This commit is contained in:
Andrew Chen (Eng) 2018-05-07 14:53:28 -07:00 committed by Facebook Github Bot
parent 3145b1e62a
commit 1be2541ce2
2 changed files with 26 additions and 0 deletions
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6
ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java
View File

@ -166,6 +166,9 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
@Override
public ReactShadowNodeImpl mutableCopy() {
ReactShadowNodeImpl copy = copy();
Assertions.assertCondition(
getClass() == copy.getClass(),
"Copied shadow node must use the same class");
if (mYogaNode != null) {
copy.mYogaNode = mYogaNode.clone();
copy.mYogaNode.setData(copy);
@ -182,6 +185,9 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
@Override
public ReactShadowNodeImpl mutableCopyWithNewChildren() {
ReactShadowNodeImpl copy = copy();
Assertions.assertCondition(
getClass() == copy.getClass(),
"Copied shadow node must use the same class");
if (mYogaNode != null) {
copy.mYogaNode = mYogaNode.cloneWithNewChildren();
copy.mYogaNode.setData(copy);

20
ReactAndroid/src/test/java/com/facebook/react/fabric/ReactShadowNodeTest.java Normal file
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@ -0,0 +1,20 @@
// Copyright 2004-present Facebook. All Rights Reserved.
package com.facebook.react.fabric;
import com.facebook.react.uimanager.ReactShadowNodeImpl;
import com.facebook.testing.robolectric.v3.WithTestDefaultsRunner;
import org.junit.Test;
import org.junit.runner.RunWith;
/** Tests {@link ReactShadowNode} */
@RunWith(WithTestDefaultsRunner.class)
public class ReactShadowNodeTest {
@Test(expected = AssertionError.class)
public void testClonedInstance() {
TestReactShadowNode node = new TestReactShadowNode();
node.mutableCopy();
}
private static class TestReactShadowNode extends ReactShadowNodeImpl {}
}