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Testing List Operations Implementation in hello-algo

This test suite validates Go slice operations and list manipulation functionality in the hello-algo repository. It comprehensively tests basic list operations, element access, and modifications while demonstrating idiomatic Go testing patterns.

Test Coverage Overview

The test coverage encompasses essential list operations in Go, including initialization, element access, updates, and manipulations.

Element access and modification testing
List clearing and appending operations
Insert and delete operations at specific indices
List traversal implementations
List concatenation and sorting operations

Implementation Analysis

The testing approach utilizes Go’s native testing package with the testing.T struct for test execution and validation. The implementation demonstrates idiomatic Go patterns for slice manipulation, including append operations, slice expressions, and range-based iterations.

The test structure follows Go’s standard table-driven testing pattern, with clear separation of test cases and assertions.

Technical Details

Uses Go’s built-in testing framework
Leverages sort.Ints for sorting operations
Implements fmt package for output formatting
Utilizes slice operations and manipulations
Demonstrates nil assignment for cleanup

Best Practices Demonstrated

The test suite exemplifies Go testing best practices through clear organization and comprehensive coverage of list operations.

Clean test function organization
Proper use of Go’s testing package
Clear demonstration of slice operations
Effective use of fmt for output validation
Proper memory management through nil assignments

krahets/hello-algo

codes/go/chapter_array_and_linkedlist/list_test.go

            
// File: list_test.go
// Created Time: 2022-12-18
// Author: msk397 ([email protected])

package chapter_array_and_linkedlist

import (
	"fmt"
	"sort"
	"testing"
)

/* Driver Code */
func TestList(t *testing.T) {
	/* 初始化列表 */
	nums := []int{1, 3, 2, 5, 4}
	fmt.Println("列表 nums =", nums)

	/* 访问元素 */
	num := nums[1] // 访问索引 1 处的元素
	fmt.Println("访问索引 1 处的元素，得到 num =", num)

	/* 更新元素 */
	nums[1] = 0 // 将索引 1 处的元素更新为 0
	fmt.Println("将索引 1 处的元素更新为 0 ，得到 nums =", nums)

	/* 清空列表 */
	nums = nil
	fmt.Println("清空列表后 nums =", nums)

	/* 在尾部添加元素 */
	nums = append(nums, 1)
	nums = append(nums, 3)
	nums = append(nums, 2)
	nums = append(nums, 5)
	nums = append(nums, 4)
	fmt.Println("添加元素后 nums =", nums)

	/* 在中间插入元素 */
	nums = append(nums[:3], append([]int{6}, nums[3:]...)...) // 在索引 3 处插入数字 6
	fmt.Println("在索引 3 处插入数字 6 ，得到 nums =", nums)

	/* 删除元素 */
	nums = append(nums[:3], nums[4:]...) // 删除索引 3 处的元素
	fmt.Println("删除索引 3 处的元素，得到 nums =", nums)

	/* 通过索引遍历列表 */
	count := 0
	for i := 0; i < len(nums); i++ {
		count += nums[i]
	}
	/* 直接遍历列表元素 */
	count = 0
	for _, x := range nums {
		count += x
	}

	/* 拼接两个列表 */
	nums1 := []int{6, 8, 7, 10, 9}
	nums = append(nums, nums1...) // 将列表 nums1 拼接到 nums 之后
	fmt.Println("将列表 nums1 拼接到 nums 之后，得到 nums =", nums)

	/* 排序列表 */
	sort.Ints(nums) // 排序后，列表元素从小到大排列
	fmt.Println("排序列表后 nums =", nums)
}