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Validating Merge Sort Algorithm Implementation in hello-algo

This test suite validates the implementation of merge sort algorithm in Go, focusing on array sorting functionality. It examines the correctness of the mergeSort function through unit testing and output verification.

Test Coverage Overview

The test coverage focuses on validating the merge sort implementation with a single array input.

Tests basic integer array sorting functionality
Verifies sorting completion with array bounds handling
Covers input array transformation through merge sort process

Implementation Analysis

The testing approach utilizes Go’s native testing framework with a straightforward test case structure.

Testing patterns include:

Direct function invocation with array bounds
Output verification through fmt.Println
Single test case methodology focusing on core functionality

Technical Details

Testing infrastructure includes:

Go testing package (testing)
Standard library fmt for output validation
Local package integration (chapter_sorting)
Zero external dependencies

Best Practices Demonstrated

The test implementation showcases fundamental testing practices in Go.

Clear test function naming (TestMergeSort)
Proper test package organization
Direct algorithm validation approach
Simplified test case structure for maintainability

krahets/hello-algo

zh-hant/codes/go/chapter_sorting/merge_sort_test.go

            
// File: merge_sort_test.go
// Created Time: 2022-12-13
// Author: msk397 ([email protected])

package chapter_sorting

import (
	"fmt"
	"testing"
)

func TestMergeSort(t *testing.T) {
	nums := []int{7, 3, 2, 6, 0, 1, 5, 4}
	mergeSort(nums, 0, len(nums)-1)
	fmt.Println("合併排序完成後 nums = ", nums)
}