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1 最基本的单元测试
下面一段代码生成JUnit5架构的单元测试用例
- package com.jerry;
- public class Calculator{
- private static int result;
- public void add(int n) {
- result = result + n;
- }
- public void substract(int n) {
- result = result - n;
- }
- public void multiply(int n) {
- result = result * n;
- }
- public void divide(int n){
- try {
- result = result / n;
- }catch(ArithmeticException ex){
- System.out.println(ex);
- throw new ArithmeticException("The n not allowed to 0!!");
- }
- }
- }

ChatGPT回答
下面是基于你提供的代码生成的JUnit5架构的单元测试用例:
- package com.jerry;
- import org.junit.jupiter.api.BeforeEach;
- import org.junit.jupiter.api.Test;
- import static org.junit.jupiter.api.Assertions.*;
- public class CalculatorTest {
- private Calculator calculator;
- @BeforeEach
- public void setUp() {
- calculator = new Calculator();
- calculator.result = 10; // 初始值
- }
- @Test
- public void testAdd() {
- calculator.add(5);
- assertEquals(15, calculator.result);
- }
- @Test
- public void testSubstract() {
- calculator.substract(3);
- assertEquals(7, calculator.result);
- }
- @Test
- public void testMultiply() {
- calculator.multiply(2);
- assertEquals(20, calculator.result);
- }
- @Test
- public void testDivide() {
- calculator.divide(2);
- assertEquals(5, calculator.result);
- }
- @Test
- public void testDivideByZero() {
- ArithmeticException exception = assertThrows(ArithmeticException.class, () -> calculator.divide(0));
- assertEquals("The n not allowed to 0!!", exception.getMessage());
- }
- }

这些测试用例覆盖了Calculator类中的所有方法,并且检查了各种情况下的预期行为。
测试通过
下面代码生成unittest架构的单元测试用例
- #!/usr/bin/env python
- #coding:utf-8
- __metaclass_=type
- class calculator:
- def __init__(self,result):
- self.result=int(result)
- def add(self,n):
- self.result = self.result + n
- def subs(self,n):
- self.result = self.result - n
- def multiply(self,n):
- self.result = self.result * n
- def divide(self,n):
- try:
- self.result = self.result/n
- except ZeroDivisionError:
- print ("除数不能为零")
- self.result = 0
- def getResult(self):
- return self.result;
- def clear(self):
- self.result = 0;

ChatGPT回答
- import unittest
- from calculator import calculator
- class TestCalculator(unittest.TestCase):
- def setUp(self):
- self.calc = calculator(10)
- def test_add(self):
- self.calc.add(5)
- self.assertEqual(self.calc.getResult(), 15)
- def test_subs(self):
- self.calc.subs(3)
- self.assertEqual(self.calc.getResult(), 7)
- def test_multiply(self):
- self.calc.multiply(2)
- self.assertEqual(self.calc.getResult(), 20)
- def test_divide(self):
- self.calc.divide(2)
- self.assertEqual(self.calc.getResult(), 5)
- def test_divide_by_zero(self):
- self.calc.divide(0)
- self.assertEqual(self.calc.getResult(), 0)
- def test_clear(self):
- self.calc.clear()
- self.assertEqual(self.calc.getResult(), 0)
- if __name__ == '__main__':
- unittest.main()

请注意,这段代码假设已经有一个名为calculator的类定义在calculator.py文件中。测试用例中的setUp方法用于初始化calculator实例,test_add、test_subs、test_multiply、test_divide、test_divide_by_zero和test_clear分别对calculator类的各个方法进行测试。
测试通过
下面代码生成pytest架构的单元测试用例
- #!/usr/bin/env python
- #coding:utf-8
- __metaclass_=type
- class calculator:
- def __init__(self,result):
- self.result=int(result)
- def add(self,n):
- self.result = self.result + n
- def subs(self,n):
- self.result = self.result - n
- def multiply(self,n):
- self.result = self.result * n
- def divide(self,n):
- try:
- self.result = self.result/n
- except ZeroDivisionError:
- print ("除数不能为零")
- self.result = 0
- def getResult(self):
- return self.result;
- def clear(self):
- self.result = 0;

ChatGPT回答
下面是将给定的计算器类转换为pytest架构的单元测试用例的代码示例:
- import pytest
- class TestCalculator:
- @pytest.fixture
- def calculator_instance(self):
- from your_module import calculator # 将your_module替换为你的模块名
- calc = calculator(10) # 假设初始结果为10
- yield calc
- def test_add(self, calculator_instance):
- calculator_instance.add(5)
- assert calculator_instance.getResult() == 15
- def test_subs(self, calculator_instance):
- calculator_instance.subs(3)
- assert calculator_instance.getResult() == 7
- def test_multiply(self, calculator_instance):
- calculator_instance.multiply(2)
- assert calculator_instance.getResult() == 20
- def test_divide(self, calculator_instance):
- calculator_instance.divide(5)
- assert calculator_instance.getResult() == 2
- def test_divide_by_zero(self, calculator_instance):
- calculator_instance.divide(0)
- assert calculator_instance.getResult() == 0
- def test_clear(self, calculator_instance):
- calculator_instance.clear()
- assert calculator_instance.getResult() == 0

在这个示例中,我们使用pytest的@pytest.fixture装饰器创建了一个fixture,用于实例化计算器类。然后,我们定义了多个测试方法,每个方法对应计算器类的不同功能,并使用assert语句来验证计算结果是否符合预期。请将your_module替换为你的模块名。
from your_module import calculator # 将your_module替换为你的模块名
改为
from alculator import calculator
测试通过
对下面Account.java、AccountManager.java AccountService.java 3个文件书写基于JUnit5和Mockito的单元测试用例
Account.java
- package com.Account.JUnit5Project;
-
- public class Account
- {
- private String accountId;
- private long balance;
- public Account(String accountId, long initialBalance)
- {
- this.accountId = accountId;
- this.balance = initialBalance;
- }
- //借记
- public void debit( long amount )
- {
- this.balance -= amount;
- }
- //信用
- public void credit( long amount )
- {
- this.balance += amount;
- }
- public long getBalance()
- {
- return this.balance;
- }
- }

AccountManager.java
- package com.Account.JUnit5Project;
- import com.Account.JUnit5Project.Account;
- public interface AccountManager
- {
- Account findAccountForUser(String userId );
- void updateAccount(Account account );
- }
AccountService.java
- package com.Account.JUnit5Project;
- import com.Account.JUnit5Project.Account;
- import com.Account.JUnit5Project.AccountManager;
- public class AccountService
- {
- //使用的帐户管理器实现
- private AccountManager accountManager;
-
- //设置帐户管理器实现的设置方法
- public void setAccountManager( AccountManager manager )
- {
- this.accountManager = manager;
- }
- //一个设置客户经理实现从账户到账户的senderId beneficiaryId setter方法。
- //senderId:转出方Id
- //beneficiaryId:收益方Id
- //amount:金额
- public void transfer( String senderId, String beneficiaryId, long amount )
- {
- //初始化转出方与收益方,findAccountForUser为接口类方法
- Account sender = this.accountManager.findAccountForUser( senderId );
- Account beneficiary = this.accountManager.findAccountForUser( beneficiaryId );
- //转入和收益
- sender.debit( amount );
- beneficiary.credit( amount );
- //更新,updateAccount为接口类方法
- this.accountManager.updateAccount( sender );
- this.accountManager.updateAccount( beneficiary );
- }
- }

ChatGPT回答
下面是基于JUnit5和Mockito的单元测试用例,分别针对Account.java、AccountManager.java和AccountService.java这三个类进行测试。
- package com.Account.JUnit5Project;
- import org.junit.jupiter.api.Test;
- import org.junit.jupiter.api.BeforeEach;
- import static org.junit.jupiter.api.Assertions.*;
- import static org.mockito.Mockito.*;
- public class AccountTest {
- private Account account;
- @BeforeEach
- public void setUp() {
- account = new Account("12345", 1000);
- }
- @Test
- public void testDebit() {
- account.debit(500);
- assertEquals(500, account.getBalance());
- }
- @Test
- public void testCredit() {
- account.credit(200);
- assertEquals(1200, account.getBalance());
- }
- }

- package com.Account.JUnit5Project;
- import org.junit.jupiter.api.Test;
- import static org.junit.jupiter.api.Assertions.*;
- import static org.mockito.Mockito.*;
- public class AccountServiceTest {
- private AccountService accountService;
- private AccountManager accountManager;
- @BeforeEach
- public void setUp() {
- accountService = new AccountService();
- accountManager = mock(AccountManager.class);
- accountService.setAccountManager(accountManager);
- }
- @Test
- public void testTransfer() {
- Account sender = new Account("sender123", 1000);
- Account beneficiary = new Account("beneficiary456", 2000);
- when(accountManager.findAccountForUser("sender123")).thenReturn(sender);
- when(accountManager.findAccountForUser("beneficiary456")).thenReturn(beneficiary);
- accountService.transfer("sender123", "beneficiary456", 500);
- assertEquals(500, sender.getBalance());
- assertEquals(2500, beneficiary.getBalance());
- verify(accountManager, times(1)).updateAccount(sender);
- verify(accountManager, times(1)).updateAccount(beneficiary);
- }
- }

在这里,我们使用了JUnit5的注解@BeforeEach和@Test来初始化测试环境和编写测试用例。同时,使用了Mockito来模拟AccountManager接口的实现,并对AccountService的transfer方法进行测试。
希望这个示例对你有所帮助!
没有定义
import org.junit.jupiter.api.BeforeEach;
加上import org.junit.jupiter.api.BeforeEach;
测试通过
被测代码
core.py
- #!/usr/bin/env python
- #coding:utf-8
-
- class Score:
- def __init__(self):
- pass
- def get_score_by_student_id(self, student_id):
- pass
- def get_address_average_score(self,student_id):
- # 成绩信息:{"Chinese":95,"Mathematics":97,"English":100}
- score = self.get_score_by_student_id(student_id)
- return (score.get("Chinese")+ score.get("Mathematics")+ score.get("English"))/3
基于core.py使用,使用from unittest import mock和pytest-mock生成单元测试代码
你可以使用unittest.mock和pytest-mock来生成基于core.py的单元测试代码。首先,你需要安装pytest-mock库:
pip3 install pytest-mock
然后,你可以创建一个测试文件test_core.py,并在其中使用unittest.mock和pytest-mock来编写测试代码。以下是一个可能的示例:
test_core.py
- import pytest
- from unittest.mock import Mock
- from core import Score
- def test_get_address_average_score(mocker):
- # 创建一个Score实例
- score = Score()
- # 使用pytest-mock的patch来模拟get_score_by_student_id方法
- mock_get_score = mocker.patch.object(score, 'get_score_by_student_id')
- mock_get_score.return_value = {"Chinese": 95, "Mathematics": 97, "English": 100}
- # 测试get_address_average_score方法
- assert score.get_address_average_score(123) == (95 + 97 + 100) / 3
在这个示例中,我们使用pytest-mock的mocker对象来模拟get_score_by_student_id方法的返回值,并使用assert语句来验证get_address_average_score方法的行为。
你可以根据实际情况修改测试用例,并使用更多的unittest.mock和pytest-mock功能来编写更复杂的测试代码。希望这可以帮助到你!
测试通过
产品代码如下
process.py
- class process:
- def myfunction(self,x, a, b):
- if ((a>1) and (b==0)):x=x/a
- if((a==2) or (x>1)):x=x+1
- return x
test_process.py
- #!/usr/bin/env python
- #coding:utf-8
- from process import process
- import unittest
- class TestProcess(unittest.TestCase):
- p= process()
- def test_case1(self):
- self.assertEqual(self.p.myfunction(1,2,0),1)
-
- def test_case2(self):
- self.assertEqual(self.p.myfunction(0,4,0),0)
- def test_case3(self):
- self.assertEqual(self.p.myfunction(1,2,1),2)
- def test_case4(self):
- self.assertEqual(self.p.myfunction(0,1,1),0)
- if __name__ == '__main__':
- unittest.main()

给出测试代码test_process.py测试产品代码process.py后的测试覆盖率
ChatGPT回答
你可以使用coverage工具来计算Python代码的测试覆盖率。首先,确保你已经安装了coverage包。然后在命令行中运行以下命令:
coverage run test_process.py
这将运行你的测试用例并收集覆盖率数据。接下来,运行以下命令来生成覆盖率报告:
coverage report -m
这将显示测试覆盖率的详细报告,包括哪些行被测试覆盖了,哪些行没有被测试覆盖。
结论
ChatGPT没有给答案,经给了个方法
产品代码如下
process.java
- package com.jerry;
- public class process {
- public int myfunction(int x, int a, int b) {
- if ((a>1) && (b==0)) x=x/a;
- if((a==2) || (x>1)) x=x+1;
- return x;
- }
- }
testprocess.java
- package com.jerry;
- import static org.junit.Assert.*;
- import org.junit.Test;
- public class Testprocess {
- private static process p = new process();
- @Test
- public void test1() {
- assertEquals(p.myfunction(1,2,0),1);
- }
- @Test
- public void test2() {
- assertEquals(p.myfunction(0,4,0),0);
- }
- @Test
- public void test3() {
- assertEquals(p.myfunction(1,2,0),1);
- }
- @Test
- public void test4() {
- assertEquals(p.myfunction(0,1,1),0);
- }
- }

给出测试代码testprocess.java测试产品代码process.java后的测试覆盖率
ChatGPT回答
为了计算测试覆盖率,你可以使用JaCoCo代码覆盖率工具。首先,确保你的项目中已经包含了JaCoCo插件。然后,你可以使用构建工具(比如Maven或Gradle)来生成测试覆盖率报告。
如果你使用Maven作为构建工具,你可以在项目的pom.xml文件中添加JaCoCo插件配置:
- <build>
- <plugins>
- <plugin>
- <groupId>org.jacoco</groupId>
- <artifactId>jacoco-maven-plugin</artifactId>
- <version>0.8.7</version>
- <executions>
- <execution>
- <goals>
- <goal>prepare-agent</goal>
- </goals>
- </execution>
- <execution>
- <id>report</id>
- <phase>test</phase>
- <goals>
- <goal>report</goal>
- </goals>
- </execution>
- </executions>
- </plugin>
- </plugins>
- </build>

然后,在命令行中执行以下命令来运行测试并生成覆盖率报告:
mvn clean test
执行完上述命令后,你可以在项目的target目录中找到JaCoCo生成的测试覆盖率报告。报告通常以HTML格式呈现,你可以在浏览器中打开查看详细的覆盖率信息。
通过这个过程,你就可以得到测试代码testprocess.java对产品代码process.java的测试覆盖率情况。
结论
ChatGPT没有给答案,经给了个方法
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