Mockito。沒有捕獲任何參數值

Question

應如何更改此代碼以便它不會拋出異常？

ArgumentCaptor<Date> argument = forClass(Date.class); 
verify(ps, times(0)).setDate(anyInt(), argument.capture()); 

typeHandler.setNonNullParameter(ps, 1, "20170120", DATE); 

assertEquals(new Date(2017, 01, 20), argument.getValue()); 

更多代碼：

import org.apache.ibatis.type.BaseTypeHandler; 
import org.apache.ibatis.type.JdbcType; 
import org.joda.time.LocalDate; 
import org.joda.time.format.DateTimeFormat; 
import org.joda.time.format.DateTimeFormatter; 

import java.sql.*; 

public class DateStringTypeHandler extends BaseTypeHandler<String> { 

    private static final DateTimeFormatter YYYY_MM_DD = DateTimeFormat.forPattern("yyyyMMdd"); 

    @Override 
    public void setNonNullParameter(PreparedStatement ps, int i, String parameter, JdbcType jdbcType) throws SQLException { 
     LocalDate localDate = YYYY_MM_DD.parseLocalDate(parameter); 
     ps.setDate(i, new Date(localDate.toDateTimeAtStartOfDay().getMillis())); 
    } 
} 

@RunWith(MockitoJUnitRunner.class) 
public class DateStringTypeHandlerTest { 

    @Mock 
    private PreparedStatement ps; 
    private DateStringTypeHandler typeHandler; 

    @Before 
    public void before() { 
     typeHandler = new DateStringTypeHandler(); 
    } 

    @Test 
    public void testSetNonNullParameterPreparedStatementIntStringJdbcType() throws SQLException { 
     ArgumentCaptor<Date> argument = forClass(Date.class); 
     verify(ps, times(0)).setDate(anyInt(), argument.capture()); 

     typeHandler.setNonNullParameter(ps, 1, "20170120", DATE); 

     assertEquals(new Date(2017, 01, 20), argument.getValue()); 
    } 
}  

verify拋出異常：

org.mockito.exceptions.base.MockitoException: 
No argument value was captured! 
You might have forgotten to use argument.capture() in verify()... 
...or you used capture() in stubbing but stubbed method was not called. 
Be aware that it is recommended to use capture() only with verify() 

Examples of correct argument capturing: 
    ArgumentCaptor<Person> argument = ArgumentCaptor.forClass(Person.class); 
    verify(mock).doSomething(argument.capture()); 
    assertEquals("John", argument.getValue().getName()); 

Answer 1

您應該調用類的方法測試第一。然後，您驗證使用的俘虜：

@Test 
    public void testSetNonNullParameterPreparedStatementIntStringJdbcType() throws SQLException { 
     // Arrange 
     ArgumentCaptor<Date> argument = forClass(Date.class); 

     // Act 
     typeHandler.setNonNullParameter(ps, 1, "20170120", DATE); 

     // Assert    
     verify(ps).setDate(anyInt(), argument.capture());  
     assertEquals(new Date(2017, 01, 20), argument.getValue()); 
    } 

而且現在你可能不會需要times(..)說法。