Question

我想测试Class.forName（REDSHIFT_JDBC_DRIVER）部分并检查异常部分。有什么办法吗？

public Connection getConnection() throws SQLException {
    Connection conn = null;
    try {
        Class.forName(REDSHIFT_JDBC_DRIVER);
        conn = DriverManager.getConnection(DB_URL, redShfitProperties);
    } catch (ClassNotFoundException e) {
        throw new RuntimeException("error", e);
    } catch (SQLException e) {
        log.error("Exception in getting connection", e);
        throw e;
    }
    return conn;
}

Answer 1

您可以在您的班级中插入班级名称，然后使用不存在的班级名称进行测试。

public class YourClass {

    private final String jdbcDriver;

    public YourClass() {
        this(REDSHIFT_JDBC_DRIVER);
    }

    YourClass(String jdbcDriver) {
        this.jdbcDriver = jdbcDriver;
    }

    public Connection getConnection() throws SQLException {
        ...
        Class.forName(jdbcDriver);
        ...
    }
}

您的测试可能如下所示：

@Test
public void fails_with_RuntimeException_when_driver_is_not_available() {
    YourClass instance = new YourClass("this.class.does.not.exist");
    assertThatThrownBy(() -> instance.getConnection(...))
        isInstanceOf(RuntimeException.class);
}

如何使用testng / junit测试Class.forName（）？

1 个答案: