Question

我走了：

abstract class IdentifiedEntity<E extends IdentifiedEntity> implements Cloneable {
  ...
  public void updateWith(E that) {
    if (this != that) {
      if (that.isNew()) {
        throw new IllegalArgumentException("Cannot update with a new entity");
      }
      if (this.isNew()) {
        throw new IllegalStateException("Cannot update a new entity");
      }
      if (this.getId() != that.getId()) {
        throw new IllegalArgumentException("IDs do not match");
      }
      doUpdateWith(that);
    }
  }

  abstract void doUpdateWith(E that);
  ...
}

public final class User extends IdentifiedEntity<User> {
  ...
  @Override
  void doUpdateWith(User that) {
    assert that != null;
    this.name = that.name;
    this.email = that.email;
    System.arraycopy(that.password, 0, password, 0, password.length);
    this.enabled = that.enabled;
    this.caloriesPerDayLimit = that.caloriesPerDayLimit;
  }
  ...
}

问题是我如何对updateWith(...)进行单元测试，以确保它定义地调用后代中所包含的抽象doUpdateWith(...)（是的，当然，如果我对检查进行了测试）？

你们这些人！

Answer 1

创建一个虚拟子类

@Test
public void test() throws Exception {
    ConcreteEntity e = Mockito.spy(new ConcreteEntity());
    e.updateWith(e);

    Mockito.verify(e).doUpdateWith(e);
}

然后像这样测试：

-- Building for: Visual Studio 12 2013
-- The C compiler identification is MSVC 18.0.31101.0
-- The CXX compiler identification is MSVC 18.0.31101.0
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC/bin/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC/bin/cl.exe -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC/bin/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC/bin/cl.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for pthread.h
-- Looking for pthread.h - not found
-- Found Threads: TRUE
CMake Error at C:/Program Files/CMake/share/cmake-3.10/Modules/FindBoost.cmake:1928 (message):
  Unable to find the requested Boost libraries.

  Boost version: 1.58.0

  Boost include path: C:/local/boost_1_58_0

  Could not find the following static Boost libraries:

          boost_system
          boost_filesystem
          boost_thread
          boost_date_time
          boost_chrono
          boost_regex
          boost_serialization
          boost_program_options

  Some (but not all) of the required Boost libraries were found.  You may
  need to install these additional Boost libraries.  Alternatively, set
  BOOST_LIBRARYDIR to the directory containing Boost libraries or BOOST_ROOT
  to the location of Boost.
Call Stack (most recent call first):
  CMakeLists.txt:113 (find_package)


-- WARNING: Git was not found!
-- Found PythonInterp: C:/Users/chris/AppData/Local/Programs/Python/Python36-32/python.exe (found version "3.6.4")
CMake Warning in CMakeLists.txt:
  CMAKE_SKIP_INSTALL_RULES was enabled even though installation rules have
  been specified


-- Configuring incomplete, errors occurred!
See also "C:/Users/chris/Documents/GitHub/cryptonote/build/CMakeFiles/CMakeOutput.log".
See also "C:/Users/chris/Documents/GitHub/cryptonote/build/CMakeFiles/CMakeError.log".

然而，这样的测试非常特别。它不允许您更改方法的实现。

Answer 2

在@CoronA的帮助下，我找到了答案。这是：

@Test
public void updateWith() {
  User user = this.user.clone().setId(100);
  User mock = Mockito.spy(user);
  mock.updateWith(user);
  Mockito.verify(mock).doUpdateWith(user);
}

非常感谢你们！

jUnit，Mockito。如何确保抽象类中的方法（一个模板方法）调用抽象钩子方法？

2 个答案: