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Testing Binary Tree Node Operations in hello-algo

This test suite validates the core functionality of binary tree operations in Go, focusing on tree node creation, conversion between array and tree structures, and tree visualization. The tests ensure reliable tree data structure manipulation and representation.

Test Coverage Overview

The test coverage focuses on essential binary tree operations:

Array to tree conversion via SliceToTree
Tree to array conversion via TreeToSlice
Tree visualization through PrintTree

Edge cases include handling of nil nodes and nested tree structures. Integration points demonstrate seamless conversion between slice and tree data structures.

Implementation Analysis

The testing approach utilizes Go’s native testing framework with a single comprehensive test case that validates the full lifecycle of tree operations. The implementation employs straightforward test patterns with clear input/output validation and visual verification through printing.

Framework-specific features include the testing.T struct for test organization and fmt package for output validation.

Technical Details

Testing tools and components:

Go testing package (testing)
Standard fmt package for output formatting
Custom tree node implementation
Slice-based test data structure

Configuration includes test setup with predefined array input containing mixed integer and nil values.

Best Practices Demonstrated

The test implementation showcases several testing best practices in Go:

Clear test function naming (TestTreeNode)
Comprehensive data structure validation
Visual output verification
Efficient test case organization
Proper use of Go’s testing framework conventions

krahets/hello-algo

codes/go/pkg/tree_node_test.go

            
// File: tree_node_test.go
// Created Time: 2022-11-25
// Author: Reanon ([email protected])

package pkg

import (
	"fmt"
	"testing"
)

func TestTreeNode(t *testing.T) {
	arr := []any{1, 2, 3, nil, 5, 6, nil}
	node := SliceToTree(arr)

	// print tree
	PrintTree(node)

	// tree to arr
	fmt.Println(TreeToSlice(node))
}