Back to Repositories

Testing Insertion Sort Implementation in hello-algo

This test suite validates the implementation of insertion sort algorithm in Go, focusing on array sorting functionality. The tests verify the correct ordering of integer arrays using insertion sort method while demonstrating Go’s testing framework capabilities.

Test Coverage Overview

The test coverage focuses on validating the insertion sort implementation with a mixed integer array containing duplicate values. The test verifies:

Basic sorting functionality with positive integers
Handling of duplicate elements (1 appears twice)
Array transformation from unsorted to sorted state
Small dataset processing (6 elements)

Implementation Analysis

The testing approach utilizes Go’s native testing package with a straightforward test function structure. The implementation demonstrates:

Use of testing.T parameter for test execution
Direct array manipulation verification
Console output for visual result confirmation
Single test case methodology

Technical Details

Testing infrastructure includes:

Go testing package (testing)
fmt package for output formatting
TestInsertionSort function as the main test handler
Direct slice manipulation for sort verification
Standard Go test execution environment

Best Practices Demonstrated

The test implementation showcases several testing best practices in Go:

Clear test function naming convention (TestInsertionSort)
Isolated test case with specific input data
Direct verification of sorting results
Simple and readable test structure
Proper package organization (chapter_sorting)

krahets/hello-algo

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

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

package chapter_sorting

import (
	"fmt"
	"testing"
)

func TestInsertionSort(t *testing.T) {
	nums := []int{4, 1, 3, 1, 5, 2}
	insertionSort(nums)
	fmt.Println("插入排序完成後 nums =", nums)
}