Java Community | Help. Code. Learn.•2w ago

How do I write a unit test for an in order traversal of a binary tree

 Java
public void inOrder(){ 
  InOrderTraverse(root);
}

private void inOrderTraverse(TreeNode root){
  If( root != null){
       inOrderTraverse(root.left);
       System.out.print(root.val + “—>”);
       inOrderTraverse(root.right);
    }
}

 Java
public void inOrder(){ 
  InOrderTraverse(root);
}

private void inOrderTraverse(TreeNode root){
  If( root != null){
       inOrderTraverse(root.left);
       System.out.print(root.val + “—>”);
       inOrderTraverse(root.right);
    }
}

11 Replies

JavaBot•2w ago

⌛ This post has been reserved for your question.

Hey @ukpagrace! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically marked as dormant after 300 minutes of inactivity.

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JavaBot•2w ago

Please format your code to make it more readable. For java, it should look like this:

```java
public void foo() {
 
}
```

```java
public void foo() {
 
}
```

ayylmao123xdd•2w ago

just call the method for in order traverse and check if the method is called in the proper order you can use something like verify() and to check if the arguments of the method are in the correct order

ukpagraceOP•2w ago

Is verify an assertion, checked but didn’t see it

rangry•2w ago

ayylmao123xdd•2w ago

yes assertion from mockito

import static org.mockito.Mockito.verify;

import static org.mockito.Mockito.verify;

JavaBot•2w ago

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ukpagraceOP•2w ago

Okay thank you

JavaBot•2w ago

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naveen_galatta•6d ago

Use verify method

JavaBot•6d ago

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How do I write a unit test for an in order traversal of a binary tree