我写了DAO课
public List<ClassRoom> getAllClassRooms() {
List<ClassRoom> classRoomsList = new ArrayList<>();
String sqlStatement = "SELECT * FROM university.classrooms;";
try {
Class.forName("org.postgresql.Driver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
Connection connection = null;
PreparedStatement statement = null;
ResultSet resultSet = null;
try {
connection = DriverManager.getConnection("jdbc:postgresql://127.0.0.1:5432/Exam6", "postgres", "Navlanart1");
try {
statement = connection.prepareStatement(sqlStatement);
try {
resultSet = statement.executeQuery();
while (resultSet.next()) {
ClassRoom classRoom = new ClassRoom(resultSet.getString("name"));
classRoomsList.add(classRoom);
}
} catch (SQLException e) {
} finally {
try {
resultSet.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
statement.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
connection.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return classRoomsList;
}
现在我想按这样的课程进行测试
import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.powermock.api.easymock.PowerMock.mockStatic;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;
import org.powermock.core.classloader.annotations.PrepareForTest;
import com.kolosok.university.dao.ClassRoomDao;
@RunWith(MockitoJUnitRunner.class)
@PrepareForTest(DriverManager.class)
public class TestClassRoomDao {
@Mock
Connection mockConnection;
@Mock
PreparedStatement mockPreparedStatement;
@Mock
ResultSet mockResultSet;
@Test
public void testGetAllClassRooms() throws SQLException {
mockStatic(DriverManager.class);
when(DriverManager.getConnection(anyString(), anyString(), anyString())).thenReturn(mockConnection);
when(mockConnection.prepareStatement(anyString())).thenReturn(mockPreparedStatement);
when(mockPreparedStatement.executeQuery()).thenReturn(mockResultSet);
when(mockResultSet.next()).thenReturn(Boolean.FALSE);
ClassRoomDao classRoomDao = new ClassRoomDao();
classRoomDao.getAllClassRooms();
verify(mockConnection, times(1)).prepareStatement(anyString());
verify(mockPreparedStatement, times(1)).executeQuery();
verify(mockResultSet, times(1)).next();
}
}
但它不起作用。
java.sql.SQLException: No suitable driver found for
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.kolosok.university.TestClassRoomDao.testGetAllClassRooms(TestClassRoomDao.java:58)
我在类似的问题上阅读了很多stackOverFlow答案。但仍然无法解决我的问题
我在用着
PostgreSQL的42.0.0.jre7.jar
mockito-all-1.10.19.jar
powermock-api-easymock-1.6.6.jar
powermock-core-1.6.6.jar
cglib-nodep-3.1.jar
javassist-3.12.1.GA.jar
objenesis-2.5.jar
powermock-api-mockito-1.6.6.jar
powermock-api-support-1.6.6.jar
easymock-3.4.jar
最佳答案
我认为问题可能是您没有在PowerMockRunner上运行它,因此不遵守要使用的PowerMock扩展(例如mockStatic)
尝试将@RunWith(MockitoJUnitRunner.class)
更改为@RunWith(PowerMockRunner.class)
编辑
您可能还需要初始化模拟。最简单的方法是使用@Before
方法,例如@Beforepublic void setup(){ initMocks(this);}