小编dud*_*del的帖子

Checked exception is invalid for this method尝试使用此模拟程序时出现错误：

InitialContext mockContext;
mockContext = mock(InitialContext.class);
when((DataSource) mockContext.lookup("java:comp/env/jdbc/foo")).thenThrow(new ConnectionFactoryException("test")); // <-- Fails on this line

@Test
public void shouldThrowExceptionIfDataSourceDoesNotExist() throws ConnectionFactoryException {
    assertThatExceptionOfType(ConnectionFactoryException.class)
        .isThrownBy(() -> { new DataSourceFactory(mockContext).getDataSource("foo"); })
        .withMessage("Unable to find jdbc/foo");
}

我要测试的课程：

public class DataSourceFactory {

    // Dependencies to be injected
    private InitialContext context;

    public DataSourceFactory(InitialContext context) throws ConnectionFactoryException {

        if(context == null) {
            throw new ConnectionFactoryException("context can't be null");
        }

        this.context = context;
    }

    public DataSource getDataSource(String dataSourceName) throws …