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Testing Selection Sort Algorithm Implementation in hello-algo

This test suite validates the implementation of selection sort algorithm in Go, ensuring correct sorting behavior and performance. The tests verify the algorithm’s ability to sort integer arrays while maintaining stability and handling duplicate values.

Test Coverage Overview

The test coverage focuses on validating the selection sort implementation with a mixed integer array containing duplicates.

Tests basic sorting functionality with a 6-element array
Includes duplicate values (1 appears twice) to verify stability
Validates both positive and small integer ranges
Verifies final sorted order correctness

Implementation Analysis

The testing approach utilizes Go’s native testing framework with a straightforward single test case structure. The implementation employs the testing.T struct for test execution and uses fmt for output verification.

Uses Go’s testing package for test organization
Implements a single TestSelectionSort function
Includes visual output confirmation using fmt.Println
Direct array manipulation verification

Technical Details

Testing Framework: Go testing package
Output Visualization: fmt package
Test Runner: go test command
File Organization: Follows Go testing conventions
Package Structure: chapter_sorting package

Best Practices Demonstrated

The test implementation follows Go testing conventions while maintaining simplicity and clarity in test structure. The code demonstrates good practices in test organization and naming.

Clear test function naming (TestSelectionSort)
Simple and focused test case
Proper package organization
Includes authorship and creation date documentation
Follows Go code formatting standards

krahets/hello-algo

codes/go/chapter_sorting/selection_sort_test.go

            
// File: selection_sort_test.go
// Created Time: 2023-05-29
// Author: Reanon ([email protected])

package chapter_sorting

import (
	"fmt"
	"testing"
)

func TestSelectionSort(t *testing.T) {
	nums := []int{4, 1, 3, 1, 5, 2}
	selectionSort(nums)
	fmt.Println("选择排序完成后 nums = ", nums)
}