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Testing Two Sum Algorithm Implementations in hello-algo

This test suite evaluates two different implementations of the Two Sum algorithm in Go – a brute force approach and a hash table solution. It validates the functionality of finding two numbers in an array that add up to a target sum, demonstrating both basic and optimized approaches.

Test Coverage Overview

The test coverage focuses on validating two distinct implementations of the Two Sum problem.

Tests brute force method implementation
Validates hash table-based solution
Verifies correct index pair identification
Handles positive integer inputs

Implementation Analysis

The testing approach implements parallel validation of two solution methods within a single test function. The test utilizes Go’s native testing framework with a straightforward structure that compares outputs from both implementations.

Uses Go’s testing package for test execution
Implements console output validation
Provides direct comparison of different solution approaches

Technical Details

Go testing framework (testing package)
fmt package for output formatting
Single test case with predefined input array
Direct function call validation
Console-based output verification

Best Practices Demonstrated

The test implementation showcases clean testing patterns while maintaining simplicity in validation.

Clear test case setup and initialization
Separate testing of different implementation approaches
Structured output formatting
Consistent error checking methodology

krahets/hello-algo

codes/go/chapter_searching/two_sum_test.go

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

package chapter_searching

import (
	"fmt"
	"testing"
)

func TestTwoSum(t *testing.T) {
	// ======= Test Case =======
	nums := []int{2, 7, 11, 15}
	target := 13

	// ====== Driver Code ======
	// 方法一：暴力解法
	res := twoSumBruteForce(nums, target)
	fmt.Println("方法一 res =", res)
	// 方法二：哈希表
	res = twoSumHashTable(nums, target)
	fmt.Println("方法二 res =", res)
}