使用 Mockito 模拟静态方法 [英] Mocking static methods with Mockito

问题描述

我编写了一个工厂来生成 java.sql.Connection 对象:

I've written a factory to produce java.sql.Connection objects:

public class MySQLDatabaseConnectionFactory implements DatabaseConnectionFactory {

    @Override public Connection getConnection() {
        try {
            return DriverManager.getConnection(...);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}

我想验证传递给 DriverManager.getConnection 的参数，但我不知道如何模拟静态方法.我在测试用例中使用 JUnit 4 和 Mockito.是否有模拟/验证此特定用例的好方法?

I'd like to validate the parameters passed to DriverManager.getConnection, but I don't know how to mock a static method. I'm using JUnit 4 and Mockito for my test cases. Is there a good way to mock/verify this specific use-case?

推荐答案

使用 PowerMockito在 Mockito 之上.

Use PowerMockito on top of Mockito.

示例代码:

@RunWith(PowerMockRunner.class)
@PrepareForTest(DriverManager.class)
public class Mocker {

    @Test
    public void shouldVerifyParameters() throws Exception {

        //given
        PowerMockito.mockStatic(DriverManager.class);
        BDDMockito.given(DriverManager.getConnection(...)).willReturn(...);

        //when
        sut.execute(); // System Under Test (sut)

        //then
        PowerMockito.verifyStatic();
        DriverManager.getConnection(...);

    }

更多信息:

• 为什么 Mockito 不模拟静态方法?莉>

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