参数化测试 junit_参数化的JUnit测试

参数化测试 junit

有时，您会遇到一个问题，就是尖叫使用“参数化”测试，而不是多次复制/粘贴相同的方法。测试方法基本上是相同的，唯一改变的是传入的数据。在这种情况下，请考虑创建一个利用JUnit中的“ Parameterized ”类的测试用例。

我最近遇到了一个问题，其中我们对电子邮件地址的验证不允许unicode字符。解决方法非常简单，更改正则表达式以允许这些字符。接下来，该测试更改了。我决定不对每组数据复制/粘贴单独的方法，而是决定学习Parameterized方法。结果如下。数据包括预期结果和要验证的电子邮件地址。

JUnit测试类

package com.mycompany.client;import static org.junit.Assert.*;import java.util.Arrays;import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;import com.mycompany.test.TestServiceUtil;/*** Parameterized test case for validating email addresses against a regular expression.* We need to allow unicode characters in the userid portion of the email address, so * these test cases where created to help validate the validateEmailAddress method* in the FieldValidationController class.* * @author mmiller**/
@RunWith(Parameterized.class)
public class TestFieldValiationController {@Parameters(name = "{index}: {1} is valid email address = {0}")public static Iterable<Object> data() {return Arrays.asList(new Object[][] { { true, "john@mycomp.com" },           { true,  "john123@mycomp.com" },{ true, "j+._%20_-brown@mycomp.com" }, { true,  "123@mycomp.com" },{ false, "john brown@mycomp.com" },    { false, "123@mycomp" },{ false, "john^brown@mycomp.com" },    { true , "1john@mycomp.com" },{ false, "john#brown@mycomp.com" },    { false, "john!brown@mycomp.com" },{ false, "john()brown@mycomp.com" },   { false, "john=brown@mycomp.com" },{ true,  "johñ.brown@mycomp.com" },    { false, "john.brown@mycomp.coñ" },{ true,  "johú@mycomp.com" },          { true,  "johíáó@mycomp.com" }});}private boolean expected;private String emailAddress;public TestFieldValiationController(boolean expected, String emailAddress) {this.expected = expected;this.emailAddress = emailAddress;TestServiceUtil.getInstance();}@Testpublic void validateEmail() {assertEquals(expected, FieldValidationController.getInstance().validateEmailAddress(emailAddress));}
}

希望这可以帮助！

参考： Scratching我的编程itch博客上的JCG合作伙伴 Mike Miller提供的参数化JUnit测试。